repo stringlengths 2 99 | file stringlengths 13 225 | code stringlengths 0 18.3M | file_length int64 0 18.3M | avg_line_length float64 0 1.36M | max_line_length int64 0 4.26M | extension_type stringclasses 1 value |
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Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/SR/code/data/div2kjpeg.py | import os
from data import srdata
from data import div2k
class DIV2KJPEG(div2k.DIV2K):
def __init__(self, args, name='', train=True, benchmark=False):
self.q_factor = int(name.replace('DIV2K-Q', ''))
super(DIV2KJPEG, self).__init__(
args, name=name, train=train, benchmark=benchmark
)
def _set_filesystem(self, dir_data):
self.apath = os.path.join(dir_data, 'DIV2K')
self.dir_hr = os.path.join(self.apath, 'DIV2K_train_HR')
self.dir_lr = os.path.join(
self.apath, 'DIV2K_Q{}'.format(self.q_factor)
)
if self.input_large: self.dir_lr += 'L'
self.ext = ('.png', '.jpg')
| 675 | 31.190476 | 67 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/SR/code/data/sr291.py | from data import srdata
class SR291(srdata.SRData):
def __init__(self, args, name='SR291', train=True, benchmark=False):
super(SR291, self).__init__(args, name=name)
| 180 | 24.857143 | 72 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/SR/code/data/benchmark.py | import os
from data import common
from data import srdata
import numpy as np
import torch
import torch.utils.data as data
class Benchmark(srdata.SRData):
def __init__(self, args, name='', train=True, benchmark=True):
super(Benchmark, self).__init__(
args, name=name, train=train, benchmark=True
)
def _set_filesystem(self, dir_data):
self.apath = os.path.join(dir_data, 'benchmark', self.name)
self.dir_hr = os.path.join(self.apath, 'HR')
if self.input_large:
self.dir_lr = os.path.join(self.apath, 'LR_bicubicL')
else:
self.dir_lr = os.path.join(self.apath, 'LR_bicubic')
self.ext = ('', '.png')
| 703 | 26.076923 | 67 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/SR/code/data/video.py | import os
from data import common
import cv2
import numpy as np
import imageio
import torch
import torch.utils.data as data
class Video(data.Dataset):
def __init__(self, args, name='Video', train=False, benchmark=False):
self.args = args
self.name = name
self.scale = args.scale
self.idx_scale = 0
self.train = False
self.do_eval = False
self.benchmark = benchmark
self.filename, _ = os.path.splitext(os.path.basename(args.dir_demo))
self.vidcap = cv2.VideoCapture(args.dir_demo)
self.n_frames = 0
self.total_frames = int(self.vidcap.get(cv2.CAP_PROP_FRAME_COUNT))
def __getitem__(self, idx):
success, lr = self.vidcap.read()
if success:
self.n_frames += 1
lr, = common.set_channel(lr, n_channels=self.args.n_colors)
lr_t, = common.np2Tensor(lr, rgb_range=self.args.rgb_range)
return lr_t, -1, '{}_{:0>5}'.format(self.filename, self.n_frames)
else:
vidcap.release()
return None
def __len__(self):
return self.total_frames
def set_scale(self, idx_scale):
self.idx_scale = idx_scale
| 1,207 | 25.844444 | 77 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/SR/code/data/srdata.py | import os
import glob
import random
import pickle
from data import common
import numpy as np
import imageio
import torch
import torch.utils.data as data
class SRData(data.Dataset):
def __init__(self, args, name='', train=True, benchmark=False):
self.args = args
self.name = name
self.train = train
self.split = 'train' if train else 'test'
self.do_eval = True
self.benchmark = benchmark
self.input_large = (args.model == 'VDSR')
self.scale = args.scale
self.idx_scale = 0
self._set_filesystem(args.dir_data)
if args.ext.find('img') < 0:
path_bin = os.path.join(self.apath, 'bin')
os.makedirs(path_bin, exist_ok=True)
list_hr, list_lr = self._scan()
if args.ext.find('img') >= 0 or benchmark:
self.images_hr, self.images_lr = list_hr, list_lr
elif args.ext.find('sep') >= 0:
os.makedirs(
self.dir_hr.replace(self.apath, path_bin),
exist_ok=True
)
for s in self.scale:
os.makedirs(
os.path.join(
self.dir_lr.replace(self.apath, path_bin),
'X{}'.format(s)
),
exist_ok=True
)
self.images_hr, self.images_lr = [], [[] for _ in self.scale]
for h in list_hr:
b = h.replace(self.apath, path_bin)
b = b.replace(self.ext[0], '.pt')
self.images_hr.append(b)
self._check_and_load(args.ext, h, b, verbose=True)
for i, ll in enumerate(list_lr):
for l in ll:
b = l.replace(self.apath, path_bin)
b = b.replace(self.ext[1], '.pt')
self.images_lr[i].append(b)
self._check_and_load(args.ext, l, b, verbose=True)
if train:
n_patches = args.batch_size * args.test_every
n_images = len(args.data_train) * len(self.images_hr)
if n_images == 0:
self.repeat = 0
else:
self.repeat = max(n_patches // n_images, 1)
# Below functions as used to prepare images
def _scan(self):
names_hr = sorted(
glob.glob(os.path.join(self.dir_hr, '*' + self.ext[0]))
)
names_lr = [[] for _ in self.scale]
for f in names_hr:
filename, _ = os.path.splitext(os.path.basename(f))
for si, s in enumerate(self.scale):
names_lr[si].append(os.path.join(
self.dir_lr, 'X{}/{}x{}{}'.format(
s, filename, s, self.ext[1]
)
))
return names_hr, names_lr
def _set_filesystem(self, dir_data):
self.apath = os.path.join(dir_data, self.name)
self.dir_hr = os.path.join(self.apath, 'HR')
self.dir_lr = os.path.join(self.apath, 'LR_bicubic')
if self.input_large: self.dir_lr += 'L'
self.ext = ('.png', '.png')
def _check_and_load(self, ext, img, f, verbose=True):
if not os.path.isfile(f) or ext.find('reset') >= 0:
if verbose:
print('Making a binary: {}'.format(f))
with open(f, 'wb') as _f:
pickle.dump(imageio.imread(img), _f)
def __getitem__(self, idx):
lr, hr, filename = self._load_file(idx)
pair = self.get_patch(lr, hr)
pair = common.set_channel(*pair, n_channels=self.args.n_colors)
pair_t = common.np2Tensor(*pair, rgb_range=self.args.rgb_range)
return pair_t[0], pair_t[1], filename
def __len__(self):
if self.train:
return len(self.images_hr) * self.repeat
else:
return len(self.images_hr)
def _get_index(self, idx):
if self.train:
return idx % len(self.images_hr)
else:
return idx
def _load_file(self, idx):
idx = self._get_index(idx)
f_hr = self.images_hr[idx]
f_lr = self.images_lr[self.idx_scale][idx]
filename, _ = os.path.splitext(os.path.basename(f_hr))
if self.args.ext == 'img' or self.benchmark:
hr = imageio.imread(f_hr)
lr = imageio.imread(f_lr)
elif self.args.ext.find('sep') >= 0:
with open(f_hr, 'rb') as _f:
hr = pickle.load(_f)
with open(f_lr, 'rb') as _f:
lr = pickle.load(_f)
return lr, hr, filename
def get_patch(self, lr, hr):
scale = self.scale[self.idx_scale]
if self.train:
lr, hr = common.get_patch(
lr, hr,
patch_size=self.args.patch_size,
scale=scale,
multi=(len(self.scale) > 1),
input_large=self.input_large
)
if not self.args.no_augment: lr, hr = common.augment(lr, hr)
else:
ih, iw = lr.shape[:2]
hr = hr[0:ih * scale, 0:iw * scale]
return lr, hr
def set_scale(self, idx_scale):
if not self.input_large:
self.idx_scale = idx_scale
else:
self.idx_scale = random.randint(0, len(self.scale) - 1)
| 5,343 | 32.822785 | 73 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/SR/code/data/demo.py | import os
from data import common
import numpy as np
import imageio
import torch
import torch.utils.data as data
class Demo(data.Dataset):
def __init__(self, args, name='Demo', train=False, benchmark=False):
self.args = args
self.name = name
self.scale = args.scale
self.idx_scale = 0
self.train = False
self.benchmark = benchmark
self.filelist = []
for f in os.listdir(args.dir_demo):
if f.find('.png') >= 0 or f.find('.jp') >= 0:
self.filelist.append(os.path.join(args.dir_demo, f))
self.filelist.sort()
def __getitem__(self, idx):
filename = os.path.splitext(os.path.basename(self.filelist[idx]))[0]
lr = imageio.imread(self.filelist[idx])
lr, = common.set_channel(lr, n_channels=self.args.n_colors)
lr_t, = common.np2Tensor(lr, rgb_range=self.args.rgb_range)
return lr_t, -1, filename
def __len__(self):
return len(self.filelist)
def set_scale(self, idx_scale):
self.idx_scale = idx_scale
| 1,075 | 25.9 | 76 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/SR/code/data/common.py | import random
import numpy as np
import skimage.color as sc
import torch
def get_patch(*args, patch_size=96, scale=2, multi=False, input_large=False):
ih, iw = args[0].shape[:2]
if not input_large:
p = scale if multi else 1
tp = p * patch_size
ip = tp // scale
else:
tp = patch_size
ip = patch_size
ix = random.randrange(0, iw - ip + 1)
iy = random.randrange(0, ih - ip + 1)
if not input_large:
tx, ty = scale * ix, scale * iy
else:
tx, ty = ix, iy
ret = [
args[0][iy:iy + ip, ix:ix + ip, :],
*[a[ty:ty + tp, tx:tx + tp, :] for a in args[1:]]
]
return ret
def set_channel(*args, n_channels=3):
def _set_channel(img):
if img.ndim == 2:
img = np.expand_dims(img, axis=2)
c = img.shape[2]
if n_channels == 1 and c == 3:
img = np.expand_dims(sc.rgb2ycbcr(img)[:, :, 0], 2)
elif n_channels == 3 and c == 1:
img = np.concatenate([img] * n_channels, 2)
return img
return [_set_channel(a) for a in args]
def np2Tensor(*args, rgb_range=255):
def _np2Tensor(img):
np_transpose = np.ascontiguousarray(img.transpose((2, 0, 1)))
tensor = torch.from_numpy(np_transpose).float()
tensor.mul_(rgb_range / 255)
return tensor
return [_np2Tensor(a) for a in args]
def augment(*args, hflip=True, rot=True):
hflip = hflip and random.random() < 0.5
vflip = rot and random.random() < 0.5
rot90 = rot and random.random() < 0.5
def _augment(img):
if hflip: img = img[:, ::-1, :]
if vflip: img = img[::-1, :, :]
if rot90: img = img.transpose(1, 0, 2)
return img
return [_augment(a) for a in args]
| 1,786 | 23.479452 | 77 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/SR/code/data/__init__.py | from importlib import import_module
#from dataloader import MSDataLoader
from torch.utils.data import dataloader
from torch.utils.data import ConcatDataset
# This is a simple wrapper function for ConcatDataset
class MyConcatDataset(ConcatDataset):
def __init__(self, datasets):
super(MyConcatDataset, self).__init__(datasets)
self.train = datasets[0].train
def set_scale(self, idx_scale):
for d in self.datasets:
if hasattr(d, 'set_scale'): d.set_scale(idx_scale)
class Data:
def __init__(self, args):
self.loader_train = None
if not args.test_only:
datasets = []
for d in args.data_train:
module_name = d if d.find('DIV2K-Q') < 0 else 'DIV2KJPEG'
m = import_module('data.' + module_name.lower())
datasets.append(getattr(m, module_name)(args, name=d))
self.loader_train = dataloader.DataLoader(
MyConcatDataset(datasets),
batch_size=args.batch_size,
shuffle=True,
pin_memory=not args.cpu,
num_workers=args.n_threads,
)
self.loader_test = []
for d in args.data_test:
if d in ['Set5', 'Set14', 'B100', 'Urban100']:
m = import_module('data.benchmark')
testset = getattr(m, 'Benchmark')(args, train=False, name=d)
else:
module_name = d if d.find('DIV2K-Q') < 0 else 'DIV2KJPEG'
m = import_module('data.' + module_name.lower())
testset = getattr(m, module_name)(args, train=False, name=d)
self.loader_test.append(
dataloader.DataLoader(
testset,
batch_size=1,
shuffle=False,
pin_memory=not args.cpu,
num_workers=args.n_threads,
)
)
| 1,949 | 35.792453 | 76 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/SR/code/data/div2k.py | import os
from data import srdata
class DIV2K(srdata.SRData):
def __init__(self, args, name='DIV2K', train=True, benchmark=False):
data_range = [r.split('-') for r in args.data_range.split('/')]
if train:
data_range = data_range[0]
else:
if args.test_only and len(data_range) == 1:
data_range = data_range[0]
else:
data_range = data_range[1]
self.begin, self.end = list(map(lambda x: int(x), data_range))
super(DIV2K, self).__init__(
args, name=name, train=train, benchmark=benchmark
)
def _scan(self):
names_hr, names_lr = super(DIV2K, self)._scan()
names_hr = names_hr[self.begin - 1:self.end]
names_lr = [n[self.begin - 1:self.end] for n in names_lr]
return names_hr, names_lr
def _set_filesystem(self, dir_data):
super(DIV2K, self)._set_filesystem(dir_data)
self.dir_hr = os.path.join(self.apath, 'DIV2K_train_HR')
self.dir_lr = os.path.join(self.apath, 'DIV2K_train_LR_bicubic')
if self.input_large: self.dir_lr += 'L'
| 1,134 | 33.393939 | 72 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/SR/code/model/rcan.py | ## ECCV-2018-Image Super-Resolution Using Very Deep Residual Channel Attention Networks
## https://arxiv.org/abs/1807.02758
from model import common
from model.attention import ContextualAttention
import torch.nn as nn
import torch
def make_model(args, parent=False):
return RCAN(args)
## Channel Attention (CA) Layer
class CALayer(nn.Module):
def __init__(self, channel, reduction=16):
super(CALayer, self).__init__()
# global average pooling: feature --> point
self.avg_pool = nn.AdaptiveAvgPool2d(1)
# feature channel downscale and upscale --> channel weight
#self.a = torch.nn.Parameter(torch.Tensor([0]))
#self.a.requires_grad=True
self.conv_du = nn.Sequential(
nn.Conv2d(channel, channel // reduction, 1, padding=0, bias=True),
nn.ReLU(inplace=True),
nn.Conv2d(channel // reduction, channel, 1, padding=0, bias=True),
nn.Sigmoid()
)
def forward(self, x):
y = self.avg_pool(x)
y = self.conv_du(y)
return x * y
## Residual Channel Attention Block (RCAB)
class RCAB(nn.Module):
def __init__(
self, conv, n_feat, kernel_size, reduction,
bias=True, bn=False, act=nn.ReLU(True), res_scale=1):
super(RCAB, self).__init__()
modules_body = []
for i in range(2):
modules_body.append(conv(n_feat, n_feat, kernel_size, bias=bias))
if bn: modules_body.append(nn.BatchNorm2d(n_feat))
if i == 0: modules_body.append(act)
modules_body.append(CALayer(n_feat, reduction))
self.body = nn.Sequential(*modules_body)
self.res_scale = res_scale
def forward(self, x):
res = self.body(x)
#res = self.body(x).mul(self.res_scale)
res += x
return res
## Residual Group (RG)
class ResidualGroup(nn.Module):
def __init__(self, conv, n_feat, kernel_size, reduction, act, res_scale, n_resblocks):
super(ResidualGroup, self).__init__()
modules_body = []
modules_body = [
RCAB(
conv, n_feat, kernel_size, reduction, bias=True, bn=False, act=nn.ReLU(True), res_scale=1) \
for _ in range(n_resblocks)]
modules_body.append(conv(n_feat, n_feat, kernel_size))
self.body = nn.Sequential(*modules_body)
def forward(self, x):
res = self.body(x)
res += x
return res
## Residual Channel Attention Network (RCAN)
class RCAN(nn.Module):
def __init__(self, args, conv=common.default_conv):
super(RCAN, self).__init__()
self.a = nn.Parameter(torch.Tensor([0]))
self.a.requires_grad=True
n_resgroups = args.n_resgroups
n_resblocks = args.n_resblocks
n_feats = args.n_feats
kernel_size = 3
reduction = args.reduction
scale = args.scale[0]
act = nn.ReLU(True)
# RGB mean for DIV2K
rgb_mean = (0.4488, 0.4371, 0.4040)
rgb_std = (1.0, 1.0, 1.0)
self.sub_mean = common.MeanShift(args.rgb_range, rgb_mean, rgb_std)
# define head module
modules_head = [conv(args.n_colors, n_feats, kernel_size)]
self.msa = ContextualAttention()
# define body module
modules_body = [
ResidualGroup(
conv, n_feats, kernel_size, reduction, act=act, res_scale=args.res_scale, n_resblocks=n_resblocks) \
for _ in range(5)]
modules_body.append(self.msa)
for i in range(5):
modules_body.append(ResidualGroup(conv,n_feats,kernel_size,reduction,act=act,res_scale=args.res_scale,n_resblocks=n_resblocks))
modules_body.append(conv(n_feats, n_feats, kernel_size))
# define tail module
modules_tail = [
common.Upsampler(conv, scale, n_feats, act=False),
conv(n_feats, args.n_colors, kernel_size)]
self.add_mean = common.MeanShift(args.rgb_range, rgb_mean, rgb_std, 1)
self.head = nn.Sequential(*modules_head)
self.body = nn.Sequential(*modules_body)
self.tail = nn.Sequential(*modules_tail)
def forward(self, x):
x = self.sub_mean(x)
x = self.head(x)
res = self.body(x)
res += x
x = self.tail(res)
x = self.add_mean(x)
return x
def load_state_dict(self, state_dict, strict=False):
own_state = self.state_dict()
for name, param in state_dict.items():
if name in own_state:
if isinstance(param, nn.Parameter):
param = param.data
try:
own_state[name].copy_(param)
except Exception:
if name.find('msa') or name.find('a') >= 0:
print('Replace pre-trained upsampler to new one...')
else:
raise RuntimeError('While copying the parameter named {}, '
'whose dimensions in the model are {} and '
'whose dimensions in the checkpoint are {}.'
.format(name, own_state[name].size(), param.size()))
elif strict:
if name.find('msa') == -1:
raise KeyError('unexpected key "{}" in state_dict'
.format(name))
if strict:
missing = set(own_state.keys()) - set(state_dict.keys())
if len(missing) > 0:
raise KeyError('missing keys in state_dict: "{}"'.format(missing))
| 5,662 | 36.256579 | 139 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/SR/code/model/ddbpn.py | # Deep Back-Projection Networks For Super-Resolution
# https://arxiv.org/abs/1803.02735
from model import common
import torch
import torch.nn as nn
def make_model(args, parent=False):
return DDBPN(args)
def projection_conv(in_channels, out_channels, scale, up=True):
kernel_size, stride, padding = {
2: (6, 2, 2),
4: (8, 4, 2),
8: (12, 8, 2)
}[scale]
if up:
conv_f = nn.ConvTranspose2d
else:
conv_f = nn.Conv2d
return conv_f(
in_channels, out_channels, kernel_size,
stride=stride, padding=padding
)
class DenseProjection(nn.Module):
def __init__(self, in_channels, nr, scale, up=True, bottleneck=True):
super(DenseProjection, self).__init__()
if bottleneck:
self.bottleneck = nn.Sequential(*[
nn.Conv2d(in_channels, nr, 1),
nn.PReLU(nr)
])
inter_channels = nr
else:
self.bottleneck = None
inter_channels = in_channels
self.conv_1 = nn.Sequential(*[
projection_conv(inter_channels, nr, scale, up),
nn.PReLU(nr)
])
self.conv_2 = nn.Sequential(*[
projection_conv(nr, inter_channels, scale, not up),
nn.PReLU(inter_channels)
])
self.conv_3 = nn.Sequential(*[
projection_conv(inter_channels, nr, scale, up),
nn.PReLU(nr)
])
def forward(self, x):
if self.bottleneck is not None:
x = self.bottleneck(x)
a_0 = self.conv_1(x)
b_0 = self.conv_2(a_0)
e = b_0.sub(x)
a_1 = self.conv_3(e)
out = a_0.add(a_1)
return out
class DDBPN(nn.Module):
def __init__(self, args):
super(DDBPN, self).__init__()
scale = args.scale[0]
n0 = 128
nr = 32
self.depth = 6
rgb_mean = (0.4488, 0.4371, 0.4040)
rgb_std = (1.0, 1.0, 1.0)
self.sub_mean = common.MeanShift(args.rgb_range, rgb_mean, rgb_std)
initial = [
nn.Conv2d(args.n_colors, n0, 3, padding=1),
nn.PReLU(n0),
nn.Conv2d(n0, nr, 1),
nn.PReLU(nr)
]
self.initial = nn.Sequential(*initial)
self.upmodules = nn.ModuleList()
self.downmodules = nn.ModuleList()
channels = nr
for i in range(self.depth):
self.upmodules.append(
DenseProjection(channels, nr, scale, True, i > 1)
)
if i != 0:
channels += nr
channels = nr
for i in range(self.depth - 1):
self.downmodules.append(
DenseProjection(channels, nr, scale, False, i != 0)
)
channels += nr
reconstruction = [
nn.Conv2d(self.depth * nr, args.n_colors, 3, padding=1)
]
self.reconstruction = nn.Sequential(*reconstruction)
self.add_mean = common.MeanShift(args.rgb_range, rgb_mean, rgb_std, 1)
def forward(self, x):
x = self.sub_mean(x)
x = self.initial(x)
h_list = []
l_list = []
for i in range(self.depth - 1):
if i == 0:
l = x
else:
l = torch.cat(l_list, dim=1)
h_list.append(self.upmodules[i](l))
l_list.append(self.downmodules[i](torch.cat(h_list, dim=1)))
h_list.append(self.upmodules[-1](torch.cat(l_list, dim=1)))
out = self.reconstruction(torch.cat(h_list, dim=1))
out = self.add_mean(out)
return out
| 3,629 | 26.5 | 78 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/SR/code/model/rdn.py | # Residual Dense Network for Image Super-Resolution
# https://arxiv.org/abs/1802.08797
from model import common
import torch
import torch.nn as nn
def make_model(args, parent=False):
return RDN(args)
class RDB_Conv(nn.Module):
def __init__(self, inChannels, growRate, kSize=3):
super(RDB_Conv, self).__init__()
Cin = inChannels
G = growRate
self.conv = nn.Sequential(*[
nn.Conv2d(Cin, G, kSize, padding=(kSize-1)//2, stride=1),
nn.ReLU()
])
def forward(self, x):
out = self.conv(x)
return torch.cat((x, out), 1)
class RDB(nn.Module):
def __init__(self, growRate0, growRate, nConvLayers, kSize=3):
super(RDB, self).__init__()
G0 = growRate0
G = growRate
C = nConvLayers
convs = []
for c in range(C):
convs.append(RDB_Conv(G0 + c*G, G))
self.convs = nn.Sequential(*convs)
# Local Feature Fusion
self.LFF = nn.Conv2d(G0 + C*G, G0, 1, padding=0, stride=1)
def forward(self, x):
return self.LFF(self.convs(x)) + x
class RDN(nn.Module):
def __init__(self, args):
super(RDN, self).__init__()
r = args.scale[0]
G0 = args.G0
kSize = args.RDNkSize
# number of RDB blocks, conv layers, out channels
self.D, C, G = {
'A': (20, 6, 32),
'B': (16, 8, 64),
}[args.RDNconfig]
# Shallow feature extraction net
self.SFENet1 = nn.Conv2d(args.n_colors, G0, kSize, padding=(kSize-1)//2, stride=1)
self.SFENet2 = nn.Conv2d(G0, G0, kSize, padding=(kSize-1)//2, stride=1)
# Redidual dense blocks and dense feature fusion
self.RDBs = nn.ModuleList()
for i in range(self.D):
self.RDBs.append(
RDB(growRate0 = G0, growRate = G, nConvLayers = C)
)
# Global Feature Fusion
self.GFF = nn.Sequential(*[
nn.Conv2d(self.D * G0, G0, 1, padding=0, stride=1),
nn.Conv2d(G0, G0, kSize, padding=(kSize-1)//2, stride=1)
])
# Up-sampling net
if r == 2 or r == 3:
self.UPNet = nn.Sequential(*[
nn.Conv2d(G0, G * r * r, kSize, padding=(kSize-1)//2, stride=1),
nn.PixelShuffle(r),
nn.Conv2d(G, args.n_colors, kSize, padding=(kSize-1)//2, stride=1)
])
elif r == 4:
self.UPNet = nn.Sequential(*[
nn.Conv2d(G0, G * 4, kSize, padding=(kSize-1)//2, stride=1),
nn.PixelShuffle(2),
nn.Conv2d(G, G * 4, kSize, padding=(kSize-1)//2, stride=1),
nn.PixelShuffle(2),
nn.Conv2d(G, args.n_colors, kSize, padding=(kSize-1)//2, stride=1)
])
else:
raise ValueError("scale must be 2 or 3 or 4.")
def forward(self, x):
f__1 = self.SFENet1(x)
x = self.SFENet2(f__1)
RDBs_out = []
for i in range(self.D):
x = self.RDBs[i](x)
RDBs_out.append(x)
x = self.GFF(torch.cat(RDBs_out,1))
x += f__1
return self.UPNet(x)
| 3,202 | 29.216981 | 90 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/SR/code/model/mdsr.py | from model import common
import torch.nn as nn
def make_model(args, parent=False):
return MDSR(args)
class MDSR(nn.Module):
def __init__(self, args, conv=common.default_conv):
super(MDSR, self).__init__()
n_resblocks = args.n_resblocks
n_feats = args.n_feats
kernel_size = 3
self.scale_idx = 0
act = nn.ReLU(True)
rgb_mean = (0.4488, 0.4371, 0.4040)
rgb_std = (1.0, 1.0, 1.0)
self.sub_mean = common.MeanShift(args.rgb_range, rgb_mean, rgb_std)
m_head = [conv(args.n_colors, n_feats, kernel_size)]
self.pre_process = nn.ModuleList([
nn.Sequential(
common.ResBlock(conv, n_feats, 5, act=act),
common.ResBlock(conv, n_feats, 5, act=act)
) for _ in args.scale
])
m_body = [
common.ResBlock(
conv, n_feats, kernel_size, act=act
) for _ in range(n_resblocks)
]
m_body.append(conv(n_feats, n_feats, kernel_size))
self.upsample = nn.ModuleList([
common.Upsampler(
conv, s, n_feats, act=False
) for s in args.scale
])
m_tail = [conv(n_feats, args.n_colors, kernel_size)]
self.add_mean = common.MeanShift(args.rgb_range, rgb_mean, rgb_std, 1)
self.head = nn.Sequential(*m_head)
self.body = nn.Sequential(*m_body)
self.tail = nn.Sequential(*m_tail)
def forward(self, x):
x = self.sub_mean(x)
x = self.head(x)
x = self.pre_process[self.scale_idx](x)
res = self.body(x)
res += x
x = self.upsample[self.scale_idx](res)
x = self.tail(x)
x = self.add_mean(x)
return x
def set_scale(self, scale_idx):
self.scale_idx = scale_idx
| 1,837 | 25.637681 | 78 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/SR/code/model/common.py | import math
import torch
import torch.nn as nn
import torch.nn.functional as F
def default_conv(in_channels, out_channels, kernel_size,stride=1, bias=True):
return nn.Conv2d(
in_channels, out_channels, kernel_size,
padding=(kernel_size//2),stride=stride, bias=bias)
class MeanShift(nn.Conv2d):
def __init__(
self, rgb_range,
rgb_mean=(0.4488, 0.4371, 0.4040), rgb_std=(1.0, 1.0, 1.0), sign=-1):
super(MeanShift, self).__init__(3, 3, kernel_size=1)
std = torch.Tensor(rgb_std)
self.weight.data = torch.eye(3).view(3, 3, 1, 1) / std.view(3, 1, 1, 1)
self.bias.data = sign * rgb_range * torch.Tensor(rgb_mean) / std
for p in self.parameters():
p.requires_grad = False
class BasicBlock(nn.Sequential):
def __init__(
self, conv, in_channels, out_channels, kernel_size, stride=1, bias=True,
bn=False, act=nn.PReLU()):
m = [conv(in_channels, out_channels, kernel_size, bias=bias)]
if bn:
m.append(nn.BatchNorm2d(out_channels))
if act is not None:
m.append(act)
super(BasicBlock, self).__init__(*m)
class ResBlock(nn.Module):
def __init__(
self, conv, n_feats, kernel_size,
bias=True, bn=False, act=nn.PReLU(), res_scale=1):
super(ResBlock, self).__init__()
m = []
for i in range(2):
m.append(conv(n_feats, n_feats, kernel_size, bias=bias))
if bn:
m.append(nn.BatchNorm2d(n_feats))
if i == 0:
m.append(act)
self.body = nn.Sequential(*m)
self.res_scale = res_scale
def forward(self, x):
res = self.body(x).mul(self.res_scale)
res += x
return res
class Upsampler(nn.Sequential):
def __init__(self, conv, scale, n_feats, bn=False, act=False, bias=True):
m = []
if (scale & (scale - 1)) == 0: # Is scale = 2^n?
for _ in range(int(math.log(scale, 2))):
m.append(conv(n_feats, 4 * n_feats, 3, bias))
m.append(nn.PixelShuffle(2))
if bn:
m.append(nn.BatchNorm2d(n_feats))
if act == 'relu':
m.append(nn.ReLU(True))
elif act == 'prelu':
m.append(nn.PReLU(n_feats))
elif scale == 3:
m.append(conv(n_feats, 9 * n_feats, 3, bias))
m.append(nn.PixelShuffle(3))
if bn:
m.append(nn.BatchNorm2d(n_feats))
if act == 'relu':
m.append(nn.ReLU(True))
elif act == 'prelu':
m.append(nn.PReLU(n_feats))
else:
raise NotImplementedError
super(Upsampler, self).__init__(*m)
| 2,799 | 30.460674 | 80 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/SR/code/model/__init__.py | import os
from importlib import import_module
import torch
import torch.nn as nn
from torch.autograd import Variable
class Model(nn.Module):
def __init__(self, args, ckp):
super(Model, self).__init__()
print('Making model...')
self.scale = args.scale
self.idx_scale = 0
self.self_ensemble = args.self_ensemble
self.chop = args.chop
self.precision = args.precision
self.cpu = args.cpu
self.device = torch.device('cpu' if args.cpu else 'cuda')
self.n_GPUs = args.n_GPUs
self.save_models = args.save_models
module = import_module('model.' + args.model.lower())
self.model = module.make_model(args).to(self.device)
if args.precision == 'half': self.model.half()
if not args.cpu and args.n_GPUs > 1:
self.model = nn.DataParallel(self.model, range(args.n_GPUs))
self.load(
ckp.dir,
pre_train=args.pre_train,
resume=args.resume,
cpu=args.cpu
)
print(self.model, file=ckp.log_file)
def forward(self, x, idx_scale):
self.idx_scale = idx_scale
target = self.get_model()
if hasattr(target, 'set_scale'):
target.set_scale(idx_scale)
if self.self_ensemble and not self.training:
if self.chop:
forward_function = self.forward_chop
else:
forward_function = self.model.forward
return self.forward_x8(x, forward_function)
elif self.chop and not self.training:
return self.forward_chop(x)
else:
return self.model(x)
def get_model(self):
if self.n_GPUs == 1:
return self.model
else:
return self.model.module
def state_dict(self, **kwargs):
target = self.get_model()
return target.state_dict(**kwargs)
def save(self, apath, epoch, is_best=False):
target = self.get_model()
torch.save(
target.state_dict(),
os.path.join(apath, 'model_latest.pt')
)
if is_best:
torch.save(
target.state_dict(),
os.path.join(apath, 'model_best.pt')
)
if self.save_models:
torch.save(
target.state_dict(),
os.path.join(apath, 'model_{}.pt'.format(epoch))
)
def load(self, apath, pre_train='.', resume=-1, cpu=False):
if cpu:
kwargs = {'map_location': lambda storage, loc: storage}
else:
kwargs = {}
if resume == -1:
self.get_model().load_state_dict(
torch.load(
os.path.join(apath, 'model_latest.pt'),
**kwargs
),
strict=False
)
elif resume == 0:
if pre_train != '.':
print('Loading model from {}'.format(pre_train))
self.get_model().load_state_dict(
torch.load(pre_train, **kwargs),
strict=False
)
else:
self.get_model().load_state_dict(
torch.load(
os.path.join(apath, 'model', 'model_{}.pt'.format(resume)),
**kwargs
),
strict=False
)
def forward_chop(self, x, shave=10, min_size=6400):
scale = self.scale[self.idx_scale]
n_GPUs = min(self.n_GPUs, 4)
b, c, h, w = x.size()
h_half, w_half = h // 2, w // 2
h_size, w_size = h_half + shave, w_half + shave
h_size += h_size%scale
w_size +=w_size%scale
lr_list = [
x[:, :, 0:h_size, 0:w_size],
x[:, :, 0:h_size, (w - w_size):w],
x[:, :, (h - h_size):h, 0:w_size],
x[:, :, (h - h_size):h, (w - w_size):w]]
if w_size * h_size < min_size:
sr_list = []
for i in range(0, 4, n_GPUs):
lr_batch = torch.cat(lr_list[i:(i + n_GPUs)], dim=0)
sr_batch = self.model(lr_batch)
sr_list.extend(sr_batch.chunk(n_GPUs, dim=0))
else:
sr_list = [
self.forward_chop(patch, shave=shave, min_size=min_size) \
for patch in lr_list
]
h, w = scale * h, scale * w
h_half, w_half = scale * h_half, scale * w_half
h_size, w_size = scale * h_size, scale * w_size
shave *= scale
output = x.new(b, c, h, w)
output[:, :, 0:h_half, 0:w_half] \
= sr_list[0][:, :, 0:h_half, 0:w_half]
output[:, :, 0:h_half, w_half:w] \
= sr_list[1][:, :, 0:h_half, (w_size - w + w_half):w_size]
output[:, :, h_half:h, 0:w_half] \
= sr_list[2][:, :, (h_size - h + h_half):h_size, 0:w_half]
output[:, :, h_half:h, w_half:w] \
= sr_list[3][:, :, (h_size - h + h_half):h_size, (w_size - w + w_half):w_size]
return output
def forward_x8(self, x, forward_function):
def _transform(v, op):
if self.precision != 'single': v = v.float()
v2np = v.data.cpu().numpy()
if op == 'v':
tfnp = v2np[:, :, :, ::-1].copy()
elif op == 'h':
tfnp = v2np[:, :, ::-1, :].copy()
elif op == 't':
tfnp = v2np.transpose((0, 1, 3, 2)).copy()
ret = torch.Tensor(tfnp).to(self.device)
if self.precision == 'half': ret = ret.half()
return ret
lr_list = [x]
for tf in 'v', 'h', 't':
lr_list.extend([_transform(t, tf) for t in lr_list])
sr_list = [forward_function(aug) for aug in lr_list]
for i in range(len(sr_list)):
if i > 3:
sr_list[i] = _transform(sr_list[i], 't')
if i % 4 > 1:
sr_list[i] = _transform(sr_list[i], 'h')
if (i % 4) % 2 == 1:
sr_list[i] = _transform(sr_list[i], 'v')
output_cat = torch.cat(sr_list, dim=0)
output = output_cat.mean(dim=0, keepdim=True)
return output
| 6,243 | 31.520833 | 90 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/SR/code/model/mssr.py | from model import common
import torch.nn as nn
import torch
from model.attention import ContextualAttention,NonLocalAttention
def make_model(args, parent=False):
return MSSR(args)
class MultisourceProjection(nn.Module):
def __init__(self, in_channel,kernel_size = 3, conv=common.default_conv):
super(MultisourceProjection, self).__init__()
self.up_attention = ContextualAttention(scale=2)
self.down_attention = NonLocalAttention()
self.upsample = nn.Sequential(*[nn.ConvTranspose2d(in_channel,in_channel,6,stride=2,padding=2),nn.PReLU()])
self.encoder = common.ResBlock(conv, in_channel, kernel_size, act=nn.PReLU(), res_scale=1)
def forward(self,x):
down_map = self.upsample(self.down_attention(x))
up_map = self.up_attention(x)
err = self.encoder(up_map-down_map)
final_map = down_map + err
return final_map
class RecurrentProjection(nn.Module):
def __init__(self, in_channel,kernel_size = 3, conv=common.default_conv):
super(RecurrentProjection, self).__init__()
self.multi_source_projection_1 = MultisourceProjection(in_channel,kernel_size=kernel_size,conv=conv)
self.multi_source_projection_2 = MultisourceProjection(in_channel,kernel_size=kernel_size,conv=conv)
self.down_sample_1 = nn.Sequential(*[nn.Conv2d(in_channel,in_channel,6,stride=2,padding=2),nn.PReLU()])
#self.down_sample_2 = nn.Sequential(*[nn.Conv2d(in_channel,in_channel,6,stride=2,padding=2),nn.PReLU()])
self.down_sample_3 = nn.Sequential(*[nn.Conv2d(in_channel,in_channel,8,stride=4,padding=2),nn.PReLU()])
self.down_sample_4 = nn.Sequential(*[nn.Conv2d(in_channel,in_channel,8,stride=4,padding=2),nn.PReLU()])
self.error_encode_1 = nn.Sequential(*[nn.ConvTranspose2d(in_channel,in_channel,6,stride=2,padding=2),nn.PReLU()])
self.error_encode_2 = nn.Sequential(*[nn.ConvTranspose2d(in_channel,in_channel,8,stride=4,padding=2),nn.PReLU()])
self.post_conv = common.BasicBlock(conv,in_channel,in_channel,kernel_size,stride=1,bias=True,act=nn.PReLU())
def forward(self, x):
x_up = self.multi_source_projection_1(x)
x_down = self.down_sample_1(x_up)
error_up = self.error_encode_1(x-x_down)
h_estimate_1 = x_up + error_up
x_up_2 = self.multi_source_projection_2(h_estimate_1)
x_down_2 = self.down_sample_3(x_up_2)
error_up_2 = self.error_encode_2(x-x_down_2)
h_estimate_2 = x_up_2 + error_up_2
x_final = self.post_conv(self.down_sample_4(h_estimate_2))
return x_final, h_estimate_2
class MSSR(nn.Module):
def __init__(self, args, conv=common.default_conv):
super(MSSR, self).__init__()
#n_convblock = args.n_convblocks
n_feats = args.n_feats
self.depth = args.depth
kernel_size = 3
scale = args.scale[0]
rgb_mean = (0.4488, 0.4371, 0.4040)
rgb_std = (1.0, 1.0, 1.0)
self.sub_mean = common.MeanShift(args.rgb_range, rgb_mean, rgb_std)
# define head module
m_head = [common.BasicBlock(conv, args.n_colors, n_feats, kernel_size,stride=1,bias=True,bn=False,act=nn.PReLU()),
common.BasicBlock(conv,n_feats, n_feats, kernel_size,stride=1,bias=True,bn=False,act=nn.PReLU())]
# define multiple reconstruction module
self.body = RecurrentProjection(n_feats)
# define tail module
m_tail = [
nn.Conv2d(
n_feats*self.depth, args.n_colors, kernel_size,
padding=(kernel_size//2)
)
]
self.add_mean = common.MeanShift(args.rgb_range, rgb_mean, rgb_std, 1)
self.head = nn.Sequential(*m_head)
self.tail = nn.Sequential(*m_tail)
def forward(self,input):
x = self.sub_mean(input)
x = self.head(x)
bag = []
for i in range(self.depth):
x, h_estimate = self.body(x)
bag.append(h_estimate)
h_feature = torch.cat(bag,dim=1)
h_final = self.tail(h_feature)
return self.add_mean(h_final)
| 4,174 | 38.761905 | 122 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/SR/code/model/edsr.py | from model import common
from model import attention
import torch.nn as nn
def make_model(args, parent=False):
if args.dilation:
from model import dilated
return PAEDSR(args, dilated.dilated_conv)
else:
return PAEDSR(args)
class PAEDSR(nn.Module):
def __init__(self, args, conv=common.default_conv):
super(PAEDSR, self).__init__()
n_resblock = args.n_resblocks
n_feats = args.n_feats
kernel_size = 3
scale = args.scale[0]
act = nn.ReLU(True)
rgb_mean = (0.4488, 0.4371, 0.4040)
rgb_std = (1.0, 1.0, 1.0)
self.sub_mean = common.MeanShift(args.rgb_range, rgb_mean, rgb_std)
self.msa = attention.PyramidAttention(channel=256, reduction=8,res_scale=args.res_scale);
# define head module
m_head = [conv(args.n_colors, n_feats, kernel_size)]
# define body module
m_body = [
common.ResBlock(
conv, n_feats, kernel_size, act=act, res_scale=args.res_scale
) for _ in range(n_resblock//2)
]
m_body.append(self.msa)
for _ in range(n_resblock//2):
m_body.append( common.ResBlock(
conv, n_feats, kernel_size, act=act, res_scale=args.res_scale
))
m_body.append(conv(n_feats, n_feats, kernel_size))
# define tail module
m_tail = [
common.Upsampler(conv, scale, n_feats, act=False),
nn.Conv2d(
n_feats, args.n_colors, kernel_size,
padding=(kernel_size//2)
)
]
self.add_mean = common.MeanShift(args.rgb_range, rgb_mean, rgb_std, 1)
self.head = nn.Sequential(*m_head)
self.body = nn.Sequential(*m_body)
self.tail = nn.Sequential(*m_tail)
def forward(self, x):
x = self.sub_mean(x)
x = self.head(x)
res = self.body(x)
res += x
x = self.tail(res)
x = self.add_mean(x)
return x
def load_state_dict(self, state_dict, strict=True):
own_state = self.state_dict()
for name, param in state_dict.items():
if name in own_state:
if isinstance(param, nn.Parameter):
param = param.data
try:
own_state[name].copy_(param)
except Exception:
if name.find('tail') == -1:
raise RuntimeError('While copying the parameter named {}, '
'whose dimensions in the model are {} and '
'whose dimensions in the checkpoint are {}.'
.format(name, own_state[name].size(), param.size()))
elif strict:
if name.find('tail') == -1:
raise KeyError('unexpected key "{}" in state_dict'
.format(name))
| 2,989 | 32.977273 | 106 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/SR/code/model/attention.py | import torch
import torch.nn as nn
import torch.nn.functional as F
from torchvision import transforms
from torchvision import utils as vutils
from model import common
from utils.tools import extract_image_patches,\
reduce_mean, reduce_sum, same_padding
class PyramidAttention(nn.Module):
def __init__(self, level=5, res_scale=1, channel=64, reduction=2, ksize=3, stride=1, softmax_scale=10, average=True, conv=common.default_conv):
super(PyramidAttention, self).__init__()
self.ksize = ksize
self.stride = stride
self.res_scale = res_scale
self.softmax_scale = softmax_scale
self.scale = [1-i/10 for i in range(level)]
self.average = average
escape_NaN = torch.FloatTensor([1e-4])
self.register_buffer('escape_NaN', escape_NaN)
self.conv_match_L_base = common.BasicBlock(conv,channel,channel//reduction, 1, bn=False, act=nn.PReLU())
self.conv_match = common.BasicBlock(conv,channel, channel//reduction, 1, bn=False, act=nn.PReLU())
self.conv_assembly = common.BasicBlock(conv,channel, channel,1,bn=False, act=nn.PReLU())
def forward(self, input):
res = input
#theta
match_base = self.conv_match_L_base(input)
shape_base = list(res.size())
input_groups = torch.split(match_base,1,dim=0)
# patch size for matching
kernel = self.ksize
# raw_w is for reconstruction
raw_w = []
# w is for matching
w = []
#build feature pyramid
for i in range(len(self.scale)):
ref = input
if self.scale[i]!=1:
ref = F.interpolate(input, scale_factor=self.scale[i], mode='bicubic')
#feature transformation function f
base = self.conv_assembly(ref)
shape_input = base.shape
#sampling
raw_w_i = extract_image_patches(base, ksizes=[kernel, kernel],
strides=[self.stride,self.stride],
rates=[1, 1],
padding='same') # [N, C*k*k, L]
raw_w_i = raw_w_i.view(shape_input[0], shape_input[1], kernel, kernel, -1)
raw_w_i = raw_w_i.permute(0, 4, 1, 2, 3) # raw_shape: [N, L, C, k, k]
raw_w_i_groups = torch.split(raw_w_i, 1, dim=0)
raw_w.append(raw_w_i_groups)
#feature transformation function g
ref_i = self.conv_match(ref)
shape_ref = ref_i.shape
#sampling
w_i = extract_image_patches(ref_i, ksizes=[self.ksize, self.ksize],
strides=[self.stride, self.stride],
rates=[1, 1],
padding='same')
w_i = w_i.view(shape_ref[0], shape_ref[1], self.ksize, self.ksize, -1)
w_i = w_i.permute(0, 4, 1, 2, 3) # w shape: [N, L, C, k, k]
w_i_groups = torch.split(w_i, 1, dim=0)
w.append(w_i_groups)
y = []
for idx, xi in enumerate(input_groups):
#group in a filter
wi = torch.cat([w[i][idx][0] for i in range(len(self.scale))],dim=0) # [L, C, k, k]
#normalize
max_wi = torch.max(torch.sqrt(reduce_sum(torch.pow(wi, 2),
axis=[1, 2, 3],
keepdim=True)),
self.escape_NaN)
wi_normed = wi/ max_wi
#matching
xi = same_padding(xi, [self.ksize, self.ksize], [1, 1], [1, 1]) # xi: 1*c*H*W
yi = F.conv2d(xi, wi_normed, stride=1) # [1, L, H, W] L = shape_ref[2]*shape_ref[3]
yi = yi.view(1,wi.shape[0], shape_base[2], shape_base[3]) # (B=1, C=32*32, H=32, W=32)
# softmax matching score
yi = F.softmax(yi*self.softmax_scale, dim=1)
if self.average == False:
yi = (yi == yi.max(dim=1,keepdim=True)[0]).float()
# deconv for patch pasting
raw_wi = torch.cat([raw_w[i][idx][0] for i in range(len(self.scale))],dim=0)
yi = F.conv_transpose2d(yi, raw_wi, stride=self.stride,padding=1)/4.
y.append(yi)
y = torch.cat(y, dim=0)+res*self.res_scale # back to the mini-batch
return y | 4,427 | 46.106383 | 147 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/SR/code/model/vdsr.py | from model import common
import torch.nn as nn
import torch.nn.init as init
url = {
'r20f64': ''
}
def make_model(args, parent=False):
return VDSR(args)
class VDSR(nn.Module):
def __init__(self, args, conv=common.default_conv):
super(VDSR, self).__init__()
n_resblocks = args.n_resblocks
n_feats = args.n_feats
kernel_size = 3
self.url = url['r{}f{}'.format(n_resblocks, n_feats)]
self.sub_mean = common.MeanShift(args.rgb_range)
self.add_mean = common.MeanShift(args.rgb_range, sign=1)
def basic_block(in_channels, out_channels, act):
return common.BasicBlock(
conv, in_channels, out_channels, kernel_size,
bias=True, bn=False, act=act
)
# define body module
m_body = []
m_body.append(basic_block(args.n_colors, n_feats, nn.ReLU(True)))
for _ in range(n_resblocks - 2):
m_body.append(basic_block(n_feats, n_feats, nn.ReLU(True)))
m_body.append(basic_block(n_feats, args.n_colors, None))
self.body = nn.Sequential(*m_body)
def forward(self, x):
x = self.sub_mean(x)
res = self.body(x)
res += x
x = self.add_mean(res)
return x
| 1,275 | 26.148936 | 73 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/SR/code/model/paedsr.py | from model import common
from model import attention
import torch.nn as nn
def make_model(args, parent=False):
if args.dilation:
from model import dilated
return PAEDSR(args, dilated.dilated_conv)
else:
return PAEDSR(args)
class PAEDSR(nn.Module):
def __init__(self, args, conv=common.default_conv):
super(PAEDSR, self).__init__()
n_resblock = args.n_resblocks
n_feats = args.n_feats
kernel_size = 3
scale = args.scale[0]
act = nn.ReLU(True)
rgb_mean = (0.4488, 0.4371, 0.4040)
rgb_std = (1.0, 1.0, 1.0)
self.sub_mean = common.MeanShift(args.rgb_range, rgb_mean, rgb_std)
self.msa = attention.PyramidAttention(channel=256, reduction=8,res_scale=args.res_scale);
# define head module
m_head = [conv(args.n_colors, n_feats, kernel_size)]
# define body module
m_body = [
common.ResBlock(
conv, n_feats, kernel_size, act=act, res_scale=args.res_scale
) for _ in range(n_resblock//2)
]
m_body.append(self.msa)
for _ in range(n_resblock//2):
m_body.append( common.ResBlock(
conv, n_feats, kernel_size, act=act, res_scale=args.res_scale
))
m_body.append(conv(n_feats, n_feats, kernel_size))
# define tail module
m_tail = [
common.Upsampler(conv, scale, n_feats, act=False),
nn.Conv2d(
n_feats, args.n_colors, kernel_size,
padding=(kernel_size//2)
)
]
self.add_mean = common.MeanShift(args.rgb_range, rgb_mean, rgb_std, 1)
self.head = nn.Sequential(*m_head)
self.body = nn.Sequential(*m_body)
self.tail = nn.Sequential(*m_tail)
def forward(self, x):
x = self.sub_mean(x)
x = self.head(x)
res = self.body(x)
res += x
x = self.tail(res)
x = self.add_mean(x)
return x
def load_state_dict(self, state_dict, strict=True):
own_state = self.state_dict()
for name, param in state_dict.items():
if name in own_state:
if isinstance(param, nn.Parameter):
param = param.data
try:
own_state[name].copy_(param)
except Exception:
if name.find('tail') == -1:
raise RuntimeError('While copying the parameter named {}, '
'whose dimensions in the model are {} and '
'whose dimensions in the checkpoint are {}.'
.format(name, own_state[name].size(), param.size()))
elif strict:
if name.find('tail') == -1:
raise KeyError('unexpected key "{}" in state_dict'
.format(name))
| 2,989 | 32.977273 | 106 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/SR/code/model/utils/tools.py | import os
import torch
import numpy as np
from PIL import Image
import torch.nn.functional as F
def normalize(x):
return x.mul_(2).add_(-1)
def same_padding(images, ksizes, strides, rates):
assert len(images.size()) == 4
batch_size, channel, rows, cols = images.size()
out_rows = (rows + strides[0] - 1) // strides[0]
out_cols = (cols + strides[1] - 1) // strides[1]
effective_k_row = (ksizes[0] - 1) * rates[0] + 1
effective_k_col = (ksizes[1] - 1) * rates[1] + 1
padding_rows = max(0, (out_rows-1)*strides[0]+effective_k_row-rows)
padding_cols = max(0, (out_cols-1)*strides[1]+effective_k_col-cols)
# Pad the input
padding_top = int(padding_rows / 2.)
padding_left = int(padding_cols / 2.)
padding_bottom = padding_rows - padding_top
padding_right = padding_cols - padding_left
paddings = (padding_left, padding_right, padding_top, padding_bottom)
images = torch.nn.ZeroPad2d(paddings)(images)
return images
def extract_image_patches(images, ksizes, strides, rates, padding='same'):
"""
Extract patches from images and put them in the C output dimension.
:param padding:
:param images: [batch, channels, in_rows, in_cols]. A 4-D Tensor with shape
:param ksizes: [ksize_rows, ksize_cols]. The size of the sliding window for
each dimension of images
:param strides: [stride_rows, stride_cols]
:param rates: [dilation_rows, dilation_cols]
:return: A Tensor
"""
assert len(images.size()) == 4
assert padding in ['same', 'valid']
batch_size, channel, height, width = images.size()
if padding == 'same':
images = same_padding(images, ksizes, strides, rates)
elif padding == 'valid':
pass
else:
raise NotImplementedError('Unsupported padding type: {}.\
Only "same" or "valid" are supported.'.format(padding))
unfold = torch.nn.Unfold(kernel_size=ksizes,
dilation=rates,
padding=0,
stride=strides)
patches = unfold(images)
return patches # [N, C*k*k, L], L is the total number of such blocks
def reduce_mean(x, axis=None, keepdim=False):
if not axis:
axis = range(len(x.shape))
for i in sorted(axis, reverse=True):
x = torch.mean(x, dim=i, keepdim=keepdim)
return x
def reduce_std(x, axis=None, keepdim=False):
if not axis:
axis = range(len(x.shape))
for i in sorted(axis, reverse=True):
x = torch.std(x, dim=i, keepdim=keepdim)
return x
def reduce_sum(x, axis=None, keepdim=False):
if not axis:
axis = range(len(x.shape))
for i in sorted(axis, reverse=True):
x = torch.sum(x, dim=i, keepdim=keepdim)
return x
| 2,777 | 32.878049 | 79 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/SR/code/model/utils/__init__.py | 0 | 0 | 0 | py | |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/DN_RGB/code/main.py | import torch
import utility
import data
import model
import loss
from option import args
from trainer import Trainer
torch.manual_seed(args.seed)
checkpoint = utility.checkpoint(args)
def main():
global model
if args.data_test == ['video']:
from videotester import VideoTester
model = model.Model(args,checkpoint)
print('total params: %.2fM' % (sum(p.numel() for p in model.parameters())/1000000.0))
t = VideoTester(args, model, checkpoint)
t.test()
else:
if checkpoint.ok:
loader = data.Data(args)
_model = model.Model(args, checkpoint)
#print('total params:%.2fM' % (sum(p.numel() for p in model.parameters())/1000000.0))
_loss = loss.Loss(args, checkpoint) if not args.test_only else None
t = Trainer(args, loader, _model, _loss, checkpoint)
while not t.terminate():
t.train()
t.test()
checkpoint.done()
if __name__ == '__main__':
main()
| 1,026 | 27.527778 | 97 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/DN_RGB/code/utility.py | import os
import math
import time
import datetime
from multiprocessing import Process
from multiprocessing import Queue
import matplotlib
matplotlib.use('Agg')
import matplotlib.pyplot as plt
import numpy as np
import imageio
import torch
import torch.optim as optim
import torch.optim.lr_scheduler as lrs
class timer():
def __init__(self):
self.acc = 0
self.tic()
def tic(self):
self.t0 = time.time()
def toc(self, restart=False):
diff = time.time() - self.t0
if restart: self.t0 = time.time()
return diff
def hold(self):
self.acc += self.toc()
def release(self):
ret = self.acc
self.acc = 0
return ret
def reset(self):
self.acc = 0
class checkpoint():
def __init__(self, args):
self.args = args
self.ok = True
self.log = torch.Tensor()
now = datetime.datetime.now().strftime('%Y-%m-%d-%H:%M:%S')
if not args.load:
if not args.save:
args.save = now
self.dir = os.path.join('..', 'experiment', args.save)
else:
self.dir = os.path.join('..', 'experiment', args.load)
if os.path.exists(self.dir):
self.log = torch.load(self.get_path('psnr_log.pt'))
print('Continue from epoch {}...'.format(len(self.log)))
else:
args.load = ''
if args.reset:
os.system('rm -rf ' + self.dir)
args.load = ''
os.makedirs(self.dir, exist_ok=True)
os.makedirs(self.get_path('model'), exist_ok=True)
for d in args.data_test:
os.makedirs(self.get_path('results-{}'.format(d)), exist_ok=True)
open_type = 'a' if os.path.exists(self.get_path('log.txt'))else 'w'
self.log_file = open(self.get_path('log.txt'), open_type)
with open(self.get_path('config.txt'), open_type) as f:
f.write(now + '\n\n')
for arg in vars(args):
f.write('{}: {}\n'.format(arg, getattr(args, arg)))
f.write('\n')
self.n_processes = 8
def get_path(self, *subdir):
return os.path.join(self.dir, *subdir)
def save(self, trainer, epoch, is_best=False):
trainer.model.save(self.get_path('model'), epoch, is_best=is_best)
trainer.loss.save(self.dir)
trainer.loss.plot_loss(self.dir, epoch)
self.plot_psnr(epoch)
trainer.optimizer.save(self.dir)
torch.save(self.log, self.get_path('psnr_log.pt'))
def add_log(self, log):
self.log = torch.cat([self.log, log])
def write_log(self, log, refresh=False):
print(log)
self.log_file.write(log + '\n')
if refresh:
self.log_file.close()
self.log_file = open(self.get_path('log.txt'), 'a')
def done(self):
self.log_file.close()
def plot_psnr(self, epoch):
axis = np.linspace(1, epoch, epoch)
for idx_data, d in enumerate(self.args.data_test):
label = 'SR on {}'.format(d)
fig = plt.figure()
plt.title(label)
for idx_scale, scale in enumerate(self.args.scale):
plt.plot(
axis,
self.log[:, idx_data, idx_scale].numpy(),
label='Scale {}'.format(scale)
)
plt.legend()
plt.xlabel('Epochs')
plt.ylabel('PSNR')
plt.grid(True)
plt.savefig(self.get_path('test_{}.pdf'.format(d)))
plt.close(fig)
def begin_background(self):
self.queue = Queue()
def bg_target(queue):
while True:
if not queue.empty():
filename, tensor = queue.get()
if filename is None: break
imageio.imwrite(filename, tensor.numpy())
self.process = [
Process(target=bg_target, args=(self.queue,)) \
for _ in range(self.n_processes)
]
for p in self.process: p.start()
def end_background(self):
for _ in range(self.n_processes): self.queue.put((None, None))
while not self.queue.empty(): time.sleep(1)
for p in self.process: p.join()
def save_results(self, dataset, filename, save_list, scale):
if self.args.save_results:
filename = self.get_path(
'results-{}'.format(dataset.dataset.name),
'{}_x{}_'.format(filename, scale)
)
postfix = ('DN', 'LQ', 'HQ')
for v, p in zip(save_list, postfix):
normalized = v[0].mul(255 / self.args.rgb_range)
tensor_cpu = normalized.byte().permute(1, 2, 0).cpu()
self.queue.put(('{}{}.png'.format(filename, p), tensor_cpu))
def quantize(img, rgb_range):
pixel_range = 255 / rgb_range
return img.mul(pixel_range).clamp(0, 255).round().div(pixel_range)
def calc_psnr(sr, hr, scale, rgb_range, dataset=None):
if hr.nelement() == 1: return 0
diff = (sr - hr) / rgb_range
if dataset and dataset.dataset.benchmark:
shave = scale
if diff.size(1) > 5:
gray_coeffs = [65.738, 129.057, 25.064]
convert = diff.new_tensor(gray_coeffs).view(1, 3, 1, 1) / 256
diff = diff.mul(convert).sum(dim=1)
else:
shave = scale + 6
valid = diff[..., :, :]
mse = valid.pow(2).mean()
return -10 * math.log10(mse)
def make_optimizer(args, target):
'''
make optimizer and scheduler together
'''
# optimizer
trainable = filter(lambda x: x.requires_grad, target.parameters())
kwargs_optimizer = {'lr': args.lr, 'weight_decay': args.weight_decay}
if args.optimizer == 'SGD':
optimizer_class = optim.SGD
kwargs_optimizer['momentum'] = args.momentum
elif args.optimizer == 'ADAM':
optimizer_class = optim.Adam
kwargs_optimizer['betas'] = args.betas
kwargs_optimizer['eps'] = args.epsilon
elif args.optimizer == 'RMSprop':
optimizer_class = optim.RMSprop
kwargs_optimizer['eps'] = args.epsilon
# scheduler
milestones = list(map(lambda x: int(x), args.decay.split('-')))
kwargs_scheduler = {'milestones': milestones, 'gamma': args.gamma}
scheduler_class = lrs.MultiStepLR
class CustomOptimizer(optimizer_class):
def __init__(self, *args, **kwargs):
super(CustomOptimizer, self).__init__(*args, **kwargs)
def _register_scheduler(self, scheduler_class, **kwargs):
self.scheduler = scheduler_class(self, **kwargs)
def save(self, save_dir):
torch.save(self.state_dict(), self.get_dir(save_dir))
def load(self, load_dir, epoch=1):
self.load_state_dict(torch.load(self.get_dir(load_dir)))
if epoch > 1:
for _ in range(epoch): self.scheduler.step()
def get_dir(self, dir_path):
return os.path.join(dir_path, 'optimizer.pt')
def schedule(self):
self.scheduler.step()
def get_lr(self):
return self.scheduler.get_lr()[0]
def get_last_epoch(self):
return self.scheduler.last_epoch
optimizer = CustomOptimizer(trainable, **kwargs_optimizer)
optimizer._register_scheduler(scheduler_class, **kwargs_scheduler)
return optimizer
| 7,458 | 30.340336 | 77 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/DN_RGB/code/dataloader.py | import threading
import random
import torch
import torch.multiprocessing as multiprocessing
from torch.utils.data import DataLoader
from torch.utils.data import SequentialSampler
from torch.utils.data import RandomSampler
from torch.utils.data import BatchSampler
from torch.utils.data import _utils
from torch.utils.data.dataloader import _DataLoaderIter
from torch.utils.data._utils import collate
from torch.utils.data._utils import signal_handling
from torch.utils.data._utils import MP_STATUS_CHECK_INTERVAL
from torch.utils.data._utils import ExceptionWrapper
from torch.utils.data._utils import IS_WINDOWS
from torch.utils.data._utils.worker import ManagerWatchdog
from torch._six import queue
def _ms_loop(dataset, index_queue, data_queue, done_event, collate_fn, scale, seed, init_fn, worker_id):
try:
collate._use_shared_memory = True
signal_handling._set_worker_signal_handlers()
torch.set_num_threads(1)
random.seed(seed)
torch.manual_seed(seed)
data_queue.cancel_join_thread()
if init_fn is not None:
init_fn(worker_id)
watchdog = ManagerWatchdog()
while watchdog.is_alive():
try:
r = index_queue.get(timeout=MP_STATUS_CHECK_INTERVAL)
except queue.Empty:
continue
if r is None:
assert done_event.is_set()
return
elif done_event.is_set():
continue
idx, batch_indices = r
try:
idx_scale = 0
if len(scale) > 1 and dataset.train:
idx_scale = random.randrange(0, len(scale))
dataset.set_scale(idx_scale)
samples = collate_fn([dataset[i] for i in batch_indices])
samples.append(idx_scale)
except Exception:
data_queue.put((idx, ExceptionWrapper(sys.exc_info())))
else:
data_queue.put((idx, samples))
del samples
except KeyboardInterrupt:
pass
class _MSDataLoaderIter(_DataLoaderIter):
def __init__(self, loader):
self.dataset = loader.dataset
self.scale = loader.scale
self.collate_fn = loader.collate_fn
self.batch_sampler = loader.batch_sampler
self.num_workers = loader.num_workers
self.pin_memory = loader.pin_memory and torch.cuda.is_available()
self.timeout = loader.timeout
self.sample_iter = iter(self.batch_sampler)
base_seed = torch.LongTensor(1).random_().item()
if self.num_workers > 0:
self.worker_init_fn = loader.worker_init_fn
self.worker_queue_idx = 0
self.worker_result_queue = multiprocessing.Queue()
self.batches_outstanding = 0
self.worker_pids_set = False
self.shutdown = False
self.send_idx = 0
self.rcvd_idx = 0
self.reorder_dict = {}
self.done_event = multiprocessing.Event()
base_seed = torch.LongTensor(1).random_()[0]
self.index_queues = []
self.workers = []
for i in range(self.num_workers):
index_queue = multiprocessing.Queue()
index_queue.cancel_join_thread()
w = multiprocessing.Process(
target=_ms_loop,
args=(
self.dataset,
index_queue,
self.worker_result_queue,
self.done_event,
self.collate_fn,
self.scale,
base_seed + i,
self.worker_init_fn,
i
)
)
w.daemon = True
w.start()
self.index_queues.append(index_queue)
self.workers.append(w)
if self.pin_memory:
self.data_queue = queue.Queue()
pin_memory_thread = threading.Thread(
target=_utils.pin_memory._pin_memory_loop,
args=(
self.worker_result_queue,
self.data_queue,
torch.cuda.current_device(),
self.done_event
)
)
pin_memory_thread.daemon = True
pin_memory_thread.start()
self.pin_memory_thread = pin_memory_thread
else:
self.data_queue = self.worker_result_queue
_utils.signal_handling._set_worker_pids(
id(self), tuple(w.pid for w in self.workers)
)
_utils.signal_handling._set_SIGCHLD_handler()
self.worker_pids_set = True
for _ in range(2 * self.num_workers):
self._put_indices()
class MSDataLoader(DataLoader):
def __init__(self, cfg, *args, **kwargs):
super(MSDataLoader, self).__init__(
*args, **kwargs, num_workers=cfg.n_threads
)
self.scale = cfg.scale
def __iter__(self):
return _MSDataLoaderIter(self)
| 5,259 | 32.081761 | 104 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/DN_RGB/code/template.py | def set_template(args):
# Set the templates here
if args.template.find('jpeg') >= 0:
args.data_train = 'DIV2K_jpeg'
args.data_test = 'DIV2K_jpeg'
args.epochs = 200
args.decay = '100'
if args.template.find('EDSR_paper') >= 0:
args.model = 'EDSR'
args.n_resblocks = 32
args.n_feats = 256
args.res_scale = 0.1
if args.template.find('MDSR') >= 0:
args.model = 'MDSR'
args.patch_size = 48
args.epochs = 650
if args.template.find('DDBPN') >= 0:
args.model = 'DDBPN'
args.patch_size = 128
args.scale = '4'
args.data_test = 'Set5'
args.batch_size = 20
args.epochs = 1000
args.decay = '500'
args.gamma = 0.1
args.weight_decay = 1e-4
args.loss = '1*MSE'
if args.template.find('GAN') >= 0:
args.epochs = 200
args.lr = 5e-5
args.decay = '150'
if args.template.find('RCAN') >= 0:
args.model = 'RCAN'
args.n_resgroups = 10
args.n_resblocks = 20
args.n_feats = 64
args.chop = True
if args.template.find('VDSR') >= 0:
args.model = 'VDSR'
args.n_resblocks = 20
args.n_feats = 64
args.patch_size = 41
args.lr = 1e-1
| 1,312 | 23.314815 | 45 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/DN_RGB/code/option.py | import argparse
import template
parser = argparse.ArgumentParser(description='EDSR and MDSR')
parser.add_argument('--debug', action='store_true',
help='Enables debug mode')
parser.add_argument('--template', default='.',
help='You can set various templates in option.py')
# Hardware specifications
parser.add_argument('--n_threads', type=int, default=18,
help='number of threads for data loading')
parser.add_argument('--cpu', action='store_true',
help='use cpu only')
parser.add_argument('--n_GPUs', type=int, default=1,
help='number of GPUs')
parser.add_argument('--seed', type=int, default=1,
help='random seed')
# Data specifications
parser.add_argument('--dir_data', type=str, default='../../',help='dataset directory')
parser.add_argument('--data_train', type=str, default='DIV2K',
help='train dataset name')
parser.add_argument('--data_test', type=str, default='DIV2K',
help='test dataset name')
parser.add_argument('--data_range', type=str, default='1-800/801-805',
help='train/test data range')
parser.add_argument('--ext', type=str, default='sep',
help='dataset file extension')
parser.add_argument('--scale', type=str, default='4',
help='super resolution scale')
parser.add_argument('--patch_size', type=int, default=192,
help='output patch size')
parser.add_argument('--rgb_range', type=int, default=1,
help='maximum value of RGB')
parser.add_argument('--n_colors', type=int, default=3,
help='number of color channels to use')
parser.add_argument('--chop', action='store_true',
help='enable memory-efficient forward')
parser.add_argument('--no_augment', action='store_true',
help='do not use data augmentation')
# Model specifications
parser.add_argument('--model', default='PANET',
help='model name')
parser.add_argument('--act', type=str, default='relu',
help='activation function')
parser.add_argument('--pre_train', type=str, default='.',
help='pre-trained model directory')
parser.add_argument('--extend', type=str, default='.',
help='pre-trained model directory')
parser.add_argument('--n_resblocks', type=int, default=16,
help='number of residual blocks')
parser.add_argument('--n_feats', type=int, default=64,
help='number of feature maps')
parser.add_argument('--res_scale', type=float, default=1,
help='residual scaling')
parser.add_argument('--shift_mean', default=True,
help='subtract pixel mean from the input')
parser.add_argument('--dilation', action='store_true',
help='use dilated convolution')
parser.add_argument('--precision', type=str, default='single',
choices=('single', 'half'),
help='FP precision for test (single | half)')
# Option for Residual dense network (RDN)
parser.add_argument('--G0', type=int, default=64,
help='default number of filters. (Use in RDN)')
parser.add_argument('--RDNkSize', type=int, default=3,
help='default kernel size. (Use in RDN)')
parser.add_argument('--RDNconfig', type=str, default='B',
help='parameters config of RDN. (Use in RDN)')
parser.add_argument('--depth', type=int, default=12,
help='number of residual groups')
# Option for Residual channel attention network (RCAN)
parser.add_argument('--n_resgroups', type=int, default=10,
help='number of residual groups')
parser.add_argument('--reduction', type=int, default=16,
help='number of feature maps reduction')
# Training specifications
parser.add_argument('--reset', action='store_true',
help='reset the training')
parser.add_argument('--test_every', type=int, default=1000,
help='do test per every N batches')
parser.add_argument('--epochs', type=int, default=1000,
help='number of epochs to train')
parser.add_argument('--batch_size', type=int, default=16,
help='input batch size for training')
parser.add_argument('--split_batch', type=int, default=1,
help='split the batch into smaller chunks')
parser.add_argument('--self_ensemble', action='store_true',
help='use self-ensemble method for test')
parser.add_argument('--test_only', action='store_true',
help='set this option to test the model')
parser.add_argument('--gan_k', type=int, default=1,
help='k value for adversarial loss')
# Optimization specifications
parser.add_argument('--lr', type=float, default=1e-4,
help='learning rate')
parser.add_argument('--decay', type=str, default='200-400-600-800',
help='learning rate decay type')
parser.add_argument('--gamma', type=float, default=0.5,
help='learning rate decay factor for step decay')
parser.add_argument('--optimizer', default='ADAM',
choices=('SGD', 'ADAM', 'RMSprop'),
help='optimizer to use (SGD | ADAM | RMSprop)')
parser.add_argument('--momentum', type=float, default=0.9,
help='SGD momentum')
parser.add_argument('--betas', type=tuple, default=(0.9, 0.999),
help='ADAM beta')
parser.add_argument('--epsilon', type=float, default=1e-8,
help='ADAM epsilon for numerical stability')
parser.add_argument('--weight_decay', type=float, default=0,
help='weight decay')
parser.add_argument('--gclip', type=float, default=0,
help='gradient clipping threshold (0 = no clipping)')
# Loss specifications
parser.add_argument('--loss', type=str, default='1*L1',
help='loss function configuration')
parser.add_argument('--skip_threshold', type=float, default='1e8',
help='skipping batch that has large error')
# Log specifications
parser.add_argument('--save', type=str, default='test',
help='file name to save')
parser.add_argument('--load', type=str, default='',
help='file name to load')
parser.add_argument('--resume', type=int, default=0,
help='resume from specific checkpoint')
parser.add_argument('--save_models', action='store_true',
help='save all intermediate models')
parser.add_argument('--print_every', type=int, default=100,
help='how many batches to wait before logging training status')
parser.add_argument('--save_results', action='store_true',
help='save output results')
parser.add_argument('--save_gt', action='store_true',
help='save low-resolution and high-resolution images together')
args = parser.parse_args()
template.set_template(args)
args.scale = list(map(lambda x: int(x), args.scale.split('+')))
args.data_train = args.data_train.split('+')
args.data_test = args.data_test.split('+')
if args.epochs == 0:
args.epochs = 1e8
for arg in vars(args):
if vars(args)[arg] == 'True':
vars(args)[arg] = True
elif vars(args)[arg] == 'False':
vars(args)[arg] = False
| 7,465 | 45.372671 | 86 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/DN_RGB/code/__init__.py | 0 | 0 | 0 | py | |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/DN_RGB/code/videotester.py | import os
import math
import utility
from data import common
import torch
import cv2
from tqdm import tqdm
class VideoTester():
def __init__(self, args, my_model, ckp):
self.args = args
self.scale = args.scale
self.ckp = ckp
self.model = my_model
self.filename, _ = os.path.splitext(os.path.basename(args.dir_demo))
def test(self):
torch.set_grad_enabled(False)
self.ckp.write_log('\nEvaluation on video:')
self.model.eval()
timer_test = utility.timer()
for idx_scale, scale in enumerate(self.scale):
vidcap = cv2.VideoCapture(self.args.dir_demo)
total_frames = int(vidcap.get(cv2.CAP_PROP_FRAME_COUNT))
vidwri = cv2.VideoWriter(
self.ckp.get_path('{}_x{}.avi'.format(self.filename, scale)),
cv2.VideoWriter_fourcc(*'XVID'),
vidcap.get(cv2.CAP_PROP_FPS),
(
int(scale * vidcap.get(cv2.CAP_PROP_FRAME_WIDTH)),
int(scale * vidcap.get(cv2.CAP_PROP_FRAME_HEIGHT))
)
)
tqdm_test = tqdm(range(total_frames), ncols=80)
for _ in tqdm_test:
success, lr = vidcap.read()
if not success: break
lr, = common.set_channel(lr, n_channels=self.args.n_colors)
lr, = common.np2Tensor(lr, rgb_range=self.args.rgb_range)
lr, = self.prepare(lr.unsqueeze(0))
sr = self.model(lr, idx_scale)
sr = utility.quantize(sr, self.args.rgb_range).squeeze(0)
normalized = sr * 255 / self.args.rgb_range
ndarr = normalized.byte().permute(1, 2, 0).cpu().numpy()
vidwri.write(ndarr)
vidcap.release()
vidwri.release()
self.ckp.write_log(
'Total: {:.2f}s\n'.format(timer_test.toc()), refresh=True
)
torch.set_grad_enabled(True)
def prepare(self, *args):
device = torch.device('cpu' if self.args.cpu else 'cuda')
def _prepare(tensor):
if self.args.precision == 'half': tensor = tensor.half()
return tensor.to(device)
return [_prepare(a) for a in args]
| 2,280 | 30.246575 | 77 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/DN_RGB/code/trainer.py | import os
import math
from decimal import Decimal
import utility
import torch
import torch.nn.utils as utils
from tqdm import tqdm
class Trainer():
def __init__(self, args, loader, my_model, my_loss, ckp):
self.args = args
self.scale = args.scale
self.ckp = ckp
self.loader_train = loader.loader_train
self.loader_test = loader.loader_test
self.model = my_model
self.loss = my_loss
self.optimizer = utility.make_optimizer(args, self.model)
if self.args.load != '':
self.optimizer.load(ckp.dir, epoch=len(ckp.log))
self.error_last = 1e8
def train(self):
self.loss.step()
epoch = self.optimizer.get_last_epoch() + 1
lr = self.optimizer.get_lr()
self.ckp.write_log(
'[Epoch {}]\tLearning rate: {:.2e}'.format(epoch, Decimal(lr))
)
self.loss.start_log()
self.model.train()
timer_data, timer_model = utility.timer(), utility.timer()
# TEMP
self.loader_train.dataset.set_scale(0)
for batch, (lr, hr, _,) in enumerate(self.loader_train):
lr, hr = self.prepare(lr, hr)
timer_data.hold()
timer_model.tic()
self.optimizer.zero_grad()
sr = self.model(lr, 0)
loss = self.loss(sr, hr)
loss.backward()
if self.args.gclip > 0:
utils.clip_grad_value_(
self.model.parameters(),
self.args.gclip
)
self.optimizer.step()
timer_model.hold()
if (batch + 1) % self.args.print_every == 0:
self.ckp.write_log('[{}/{}]\t{}\t{:.1f}+{:.1f}s'.format(
(batch + 1) * self.args.batch_size,
len(self.loader_train.dataset),
self.loss.display_loss(batch),
timer_model.release(),
timer_data.release()))
timer_data.tic()
self.loss.end_log(len(self.loader_train))
self.error_last = self.loss.log[-1, -1]
self.optimizer.schedule()
def test(self):
torch.set_grad_enabled(False)
epoch = self.optimizer.get_last_epoch()
self.ckp.write_log('\nEvaluation:')
self.ckp.add_log(
torch.zeros(1, len(self.loader_test), len(self.scale))
)
self.model.eval()
timer_test = utility.timer()
if self.args.save_results: self.ckp.begin_background()
for idx_data, d in enumerate(self.loader_test):
for idx_scale, scale in enumerate(self.scale):
d.dataset.set_scale(idx_scale)
for lr, hr, filename in tqdm(d, ncols=80):
lr, hr = self.prepare(lr, hr)
sr = self.model(lr, idx_scale)
sr = utility.quantize(sr, self.args.rgb_range)
save_list = [sr]
self.ckp.log[-1, idx_data, idx_scale] += utility.calc_psnr(
sr, hr, scale, self.args.rgb_range, dataset=d
)
if self.args.save_gt:
save_list.extend([lr, hr])
if self.args.save_results:
self.ckp.save_results(d, filename[0], save_list, scale)
self.ckp.log[-1, idx_data, idx_scale] /= len(d)
best = self.ckp.log.max(0)
self.ckp.write_log(
'[{} x{}]\tPSNR: {:.3f} (Best: {:.3f} @epoch {})'.format(
d.dataset.name,
scale,
self.ckp.log[-1, idx_data, idx_scale],
best[0][idx_data, idx_scale],
best[1][idx_data, idx_scale] + 1
)
)
self.ckp.write_log('Forward: {:.2f}s\n'.format(timer_test.toc()))
self.ckp.write_log('Saving...')
if self.args.save_results:
self.ckp.end_background()
if not self.args.test_only:
self.ckp.save(self, epoch, is_best=(best[1][0, 0] + 1 == epoch))
self.ckp.write_log(
'Total: {:.2f}s\n'.format(timer_test.toc()), refresh=True
)
torch.set_grad_enabled(True)
def prepare(self, *args):
device = torch.device('cpu' if self.args.cpu else 'cuda')
def _prepare(tensor):
if self.args.precision == 'half': tensor = tensor.half()
return tensor.to(device)
return [_prepare(a) for a in args]
def terminate(self):
if self.args.test_only:
self.test()
return True
else:
epoch = self.optimizer.get_last_epoch() + 1
return epoch >= self.args.epochs
| 4,820 | 31.795918 | 79 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/DN_RGB/code/loss/adversarial.py | import utility
from types import SimpleNamespace
from model import common
from loss import discriminator
import torch
import torch.nn as nn
import torch.nn.functional as F
import torch.optim as optim
class Adversarial(nn.Module):
def __init__(self, args, gan_type):
super(Adversarial, self).__init__()
self.gan_type = gan_type
self.gan_k = args.gan_k
self.dis = discriminator.Discriminator(args)
if gan_type == 'WGAN_GP':
# see https://arxiv.org/pdf/1704.00028.pdf pp.4
optim_dict = {
'optimizer': 'ADAM',
'betas': (0, 0.9),
'epsilon': 1e-8,
'lr': 1e-5,
'weight_decay': args.weight_decay,
'decay': args.decay,
'gamma': args.gamma
}
optim_args = SimpleNamespace(**optim_dict)
else:
optim_args = args
self.optimizer = utility.make_optimizer(optim_args, self.dis)
def forward(self, fake, real):
# updating discriminator...
self.loss = 0
fake_detach = fake.detach() # do not backpropagate through G
for _ in range(self.gan_k):
self.optimizer.zero_grad()
# d: B x 1 tensor
d_fake = self.dis(fake_detach)
d_real = self.dis(real)
retain_graph = False
if self.gan_type == 'GAN':
loss_d = self.bce(d_real, d_fake)
elif self.gan_type.find('WGAN') >= 0:
loss_d = (d_fake - d_real).mean()
if self.gan_type.find('GP') >= 0:
epsilon = torch.rand_like(fake).view(-1, 1, 1, 1)
hat = fake_detach.mul(1 - epsilon) + real.mul(epsilon)
hat.requires_grad = True
d_hat = self.dis(hat)
gradients = torch.autograd.grad(
outputs=d_hat.sum(), inputs=hat,
retain_graph=True, create_graph=True, only_inputs=True
)[0]
gradients = gradients.view(gradients.size(0), -1)
gradient_norm = gradients.norm(2, dim=1)
gradient_penalty = 10 * gradient_norm.sub(1).pow(2).mean()
loss_d += gradient_penalty
# from ESRGAN: Enhanced Super-Resolution Generative Adversarial Networks
elif self.gan_type == 'RGAN':
better_real = d_real - d_fake.mean(dim=0, keepdim=True)
better_fake = d_fake - d_real.mean(dim=0, keepdim=True)
loss_d = self.bce(better_real, better_fake)
retain_graph = True
# Discriminator update
self.loss += loss_d.item()
loss_d.backward(retain_graph=retain_graph)
self.optimizer.step()
if self.gan_type == 'WGAN':
for p in self.dis.parameters():
p.data.clamp_(-1, 1)
self.loss /= self.gan_k
# updating generator...
d_fake_bp = self.dis(fake) # for backpropagation, use fake as it is
if self.gan_type == 'GAN':
label_real = torch.ones_like(d_fake_bp)
loss_g = F.binary_cross_entropy_with_logits(d_fake_bp, label_real)
elif self.gan_type.find('WGAN') >= 0:
loss_g = -d_fake_bp.mean()
elif self.gan_type == 'RGAN':
better_real = d_real - d_fake_bp.mean(dim=0, keepdim=True)
better_fake = d_fake_bp - d_real.mean(dim=0, keepdim=True)
loss_g = self.bce(better_fake, better_real)
# Generator loss
return loss_g
def state_dict(self, *args, **kwargs):
state_discriminator = self.dis.state_dict(*args, **kwargs)
state_optimizer = self.optimizer.state_dict()
return dict(**state_discriminator, **state_optimizer)
def bce(self, real, fake):
label_real = torch.ones_like(real)
label_fake = torch.zeros_like(fake)
bce_real = F.binary_cross_entropy_with_logits(real, label_real)
bce_fake = F.binary_cross_entropy_with_logits(fake, label_fake)
bce_loss = bce_real + bce_fake
return bce_loss
# Some references
# https://github.com/kuc2477/pytorch-wgan-gp/blob/master/model.py
# OR
# https://github.com/caogang/wgan-gp/blob/master/gan_cifar10.py
| 4,393 | 37.884956 | 84 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/DN_RGB/code/loss/discriminator.py | from model import common
import torch.nn as nn
class Discriminator(nn.Module):
'''
output is not normalized
'''
def __init__(self, args):
super(Discriminator, self).__init__()
in_channels = args.n_colors
out_channels = 64
depth = 7
def _block(_in_channels, _out_channels, stride=1):
return nn.Sequential(
nn.Conv2d(
_in_channels,
_out_channels,
3,
padding=1,
stride=stride,
bias=False
),
nn.BatchNorm2d(_out_channels),
nn.LeakyReLU(negative_slope=0.2, inplace=True)
)
m_features = [_block(in_channels, out_channels)]
for i in range(depth):
in_channels = out_channels
if i % 2 == 1:
stride = 1
out_channels *= 2
else:
stride = 2
m_features.append(_block(in_channels, out_channels, stride=stride))
patch_size = args.patch_size // (2**((depth + 1) // 2))
m_classifier = [
nn.Linear(out_channels * patch_size**2, 1024),
nn.LeakyReLU(negative_slope=0.2, inplace=True),
nn.Linear(1024, 1)
]
self.features = nn.Sequential(*m_features)
self.classifier = nn.Sequential(*m_classifier)
def forward(self, x):
features = self.features(x)
output = self.classifier(features.view(features.size(0), -1))
return output
| 1,595 | 27.5 | 79 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/DN_RGB/code/loss/vgg.py | from model import common
import torch
import torch.nn as nn
import torch.nn.functional as F
import torchvision.models as models
class VGG(nn.Module):
def __init__(self, conv_index, rgb_range=1):
super(VGG, self).__init__()
vgg_features = models.vgg19(pretrained=True).features
modules = [m for m in vgg_features]
if conv_index.find('22') >= 0:
self.vgg = nn.Sequential(*modules[:8])
elif conv_index.find('54') >= 0:
self.vgg = nn.Sequential(*modules[:35])
vgg_mean = (0.485, 0.456, 0.406)
vgg_std = (0.229 * rgb_range, 0.224 * rgb_range, 0.225 * rgb_range)
self.sub_mean = common.MeanShift(rgb_range, vgg_mean, vgg_std)
for p in self.parameters():
p.requires_grad = False
def forward(self, sr, hr):
def _forward(x):
x = self.sub_mean(x)
x = self.vgg(x)
return x
vgg_sr = _forward(sr)
with torch.no_grad():
vgg_hr = _forward(hr.detach())
loss = F.mse_loss(vgg_sr, vgg_hr)
return loss
| 1,106 | 28.918919 | 75 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/DN_RGB/code/loss/__init__.py | import os
from importlib import import_module
import matplotlib
matplotlib.use('Agg')
import matplotlib.pyplot as plt
import numpy as np
import torch
import torch.nn as nn
import torch.nn.functional as F
class Loss(nn.modules.loss._Loss):
def __init__(self, args, ckp):
super(Loss, self).__init__()
print('Preparing loss function:')
self.n_GPUs = args.n_GPUs
self.loss = []
self.loss_module = nn.ModuleList()
for loss in args.loss.split('+'):
weight, loss_type = loss.split('*')
if loss_type == 'MSE':
loss_function = nn.MSELoss()
elif loss_type == 'L1':
loss_function = nn.L1Loss()
elif loss_type.find('VGG') >= 0:
module = import_module('loss.vgg')
loss_function = getattr(module, 'VGG')(
loss_type[3:],
rgb_range=args.rgb_range
)
elif loss_type.find('GAN') >= 0:
module = import_module('loss.adversarial')
loss_function = getattr(module, 'Adversarial')(
args,
loss_type
)
self.loss.append({
'type': loss_type,
'weight': float(weight),
'function': loss_function}
)
if loss_type.find('GAN') >= 0:
self.loss.append({'type': 'DIS', 'weight': 1, 'function': None})
if len(self.loss) > 1:
self.loss.append({'type': 'Total', 'weight': 0, 'function': None})
for l in self.loss:
if l['function'] is not None:
print('{:.3f} * {}'.format(l['weight'], l['type']))
self.loss_module.append(l['function'])
self.log = torch.Tensor()
device = torch.device('cpu' if args.cpu else 'cuda')
self.loss_module.to(device)
if args.precision == 'half': self.loss_module.half()
if not args.cpu and args.n_GPUs > 1:
self.loss_module = nn.DataParallel(
self.loss_module, range(args.n_GPUs)
)
if args.load != '': self.load(ckp.dir, cpu=args.cpu)
def forward(self, sr, hr):
losses = []
for i, l in enumerate(self.loss):
if l['function'] is not None:
loss = l['function'](sr, hr)
effective_loss = l['weight'] * loss
losses.append(effective_loss)
self.log[-1, i] += effective_loss.item()
elif l['type'] == 'DIS':
self.log[-1, i] += self.loss[i - 1]['function'].loss
loss_sum = sum(losses)
if len(self.loss) > 1:
self.log[-1, -1] += loss_sum.item()
return loss_sum
def step(self):
for l in self.get_loss_module():
if hasattr(l, 'scheduler'):
l.scheduler.step()
def start_log(self):
self.log = torch.cat((self.log, torch.zeros(1, len(self.loss))))
def end_log(self, n_batches):
self.log[-1].div_(n_batches)
def display_loss(self, batch):
n_samples = batch + 1
log = []
for l, c in zip(self.loss, self.log[-1]):
log.append('[{}: {:.4f}]'.format(l['type'], c / n_samples))
return ''.join(log)
def plot_loss(self, apath, epoch):
axis = np.linspace(1, epoch, epoch)
for i, l in enumerate(self.loss):
label = '{} Loss'.format(l['type'])
fig = plt.figure()
plt.title(label)
plt.plot(axis, self.log[:, i].numpy(), label=label)
plt.legend()
plt.xlabel('Epochs')
plt.ylabel('Loss')
plt.grid(True)
plt.savefig(os.path.join(apath, 'loss_{}.pdf'.format(l['type'])))
plt.close(fig)
def get_loss_module(self):
if self.n_GPUs == 1:
return self.loss_module
else:
return self.loss_module.module
def save(self, apath):
torch.save(self.state_dict(), os.path.join(apath, 'loss.pt'))
torch.save(self.log, os.path.join(apath, 'loss_log.pt'))
def load(self, apath, cpu=False):
if cpu:
kwargs = {'map_location': lambda storage, loc: storage}
else:
kwargs = {}
self.load_state_dict(torch.load(
os.path.join(apath, 'loss.pt'),
**kwargs
))
self.log = torch.load(os.path.join(apath, 'loss_log.pt'))
for l in self.get_loss_module():
if hasattr(l, 'scheduler'):
for _ in range(len(self.log)): l.scheduler.step()
| 4,659 | 31.361111 | 80 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/DN_RGB/code/utils/tools.py | import os
import torch
import numpy as np
from PIL import Image
import torch.nn.functional as F
def normalize(x):
return x.mul_(2).add_(-1)
def same_padding(images, ksizes, strides, rates):
assert len(images.size()) == 4
batch_size, channel, rows, cols = images.size()
out_rows = (rows + strides[0] - 1) // strides[0]
out_cols = (cols + strides[1] - 1) // strides[1]
effective_k_row = (ksizes[0] - 1) * rates[0] + 1
effective_k_col = (ksizes[1] - 1) * rates[1] + 1
padding_rows = max(0, (out_rows-1)*strides[0]+effective_k_row-rows)
padding_cols = max(0, (out_cols-1)*strides[1]+effective_k_col-cols)
# Pad the input
padding_top = int(padding_rows / 2.)
padding_left = int(padding_cols / 2.)
padding_bottom = padding_rows - padding_top
padding_right = padding_cols - padding_left
paddings = (padding_left, padding_right, padding_top, padding_bottom)
images = torch.nn.ZeroPad2d(paddings)(images)
return images
def extract_image_patches(images, ksizes, strides, rates, padding='same'):
"""
Extract patches from images and put them in the C output dimension.
:param padding:
:param images: [batch, channels, in_rows, in_cols]. A 4-D Tensor with shape
:param ksizes: [ksize_rows, ksize_cols]. The size of the sliding window for
each dimension of images
:param strides: [stride_rows, stride_cols]
:param rates: [dilation_rows, dilation_cols]
:return: A Tensor
"""
assert len(images.size()) == 4
assert padding in ['same', 'valid']
batch_size, channel, height, width = images.size()
if padding == 'same':
images = same_padding(images, ksizes, strides, rates)
elif padding == 'valid':
pass
else:
raise NotImplementedError('Unsupported padding type: {}.\
Only "same" or "valid" are supported.'.format(padding))
unfold = torch.nn.Unfold(kernel_size=ksizes,
dilation=rates,
padding=0,
stride=strides)
patches = unfold(images)
return patches # [N, C*k*k, L], L is the total number of such blocks
def reduce_mean(x, axis=None, keepdim=False):
if not axis:
axis = range(len(x.shape))
for i in sorted(axis, reverse=True):
x = torch.mean(x, dim=i, keepdim=keepdim)
return x
def reduce_std(x, axis=None, keepdim=False):
if not axis:
axis = range(len(x.shape))
for i in sorted(axis, reverse=True):
x = torch.std(x, dim=i, keepdim=keepdim)
return x
def reduce_sum(x, axis=None, keepdim=False):
if not axis:
axis = range(len(x.shape))
for i in sorted(axis, reverse=True):
x = torch.sum(x, dim=i, keepdim=keepdim)
return x
| 2,777 | 32.878049 | 79 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/DN_RGB/code/utils/__init__.py | 0 | 0 | 0 | py | |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/DN_RGB/code/data/div2kjpeg.py | import os
from data import srdata
from data import div2k
class DIV2KJPEG(div2k.DIV2K):
def __init__(self, args, name='', train=True, benchmark=False):
self.q_factor = int(name.replace('DIV2K-Q', ''))
super(DIV2KJPEG, self).__init__(
args, name=name, train=train, benchmark=benchmark
)
def _set_filesystem(self, dir_data):
self.apath = os.path.join(dir_data, 'DIV2K')
self.dir_hr = os.path.join(self.apath, 'DIV2K_train_HR')
self.dir_lr = os.path.join(
self.apath, 'DIV2K_Q{}'.format(self.q_factor)
)
if self.input_large: self.dir_lr += 'L'
self.ext = ('.png', '.jpg')
| 675 | 31.190476 | 67 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/DN_RGB/code/data/sr291.py | from data import srdata
class SR291(srdata.SRData):
def __init__(self, args, name='SR291', train=True, benchmark=False):
super(SR291, self).__init__(args, name=name)
| 180 | 24.857143 | 72 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/DN_RGB/code/data/benchmark.py | import os
from data import common
from data import srdata
import numpy as np
import torch
import torch.utils.data as data
class Benchmark(srdata.SRData):
def __init__(self, args, name='', train=True, benchmark=True):
super(Benchmark, self).__init__(
args, name=name, train=train, benchmark=True
)
def _set_filesystem(self, dir_data):
self.apath = os.path.join(dir_data, 'benchmark', self.name)
self.dir_hr = os.path.join(self.apath, 'HR')
if self.input_large:
self.dir_lr = os.path.join(self.apath, 'LR_bicubicL')
else:
self.dir_lr = os.path.join(self.apath, 'LR_bicubic')
self.ext = ('', '.png')
| 703 | 26.076923 | 67 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/DN_RGB/code/data/video.py | import os
from data import common
import cv2
import numpy as np
import imageio
import torch
import torch.utils.data as data
class Video(data.Dataset):
def __init__(self, args, name='Video', train=False, benchmark=False):
self.args = args
self.name = name
self.scale = args.scale
self.idx_scale = 0
self.train = False
self.do_eval = False
self.benchmark = benchmark
self.filename, _ = os.path.splitext(os.path.basename(args.dir_demo))
self.vidcap = cv2.VideoCapture(args.dir_demo)
self.n_frames = 0
self.total_frames = int(self.vidcap.get(cv2.CAP_PROP_FRAME_COUNT))
def __getitem__(self, idx):
success, lr = self.vidcap.read()
if success:
self.n_frames += 1
lr, = common.set_channel(lr, n_channels=self.args.n_colors)
lr_t, = common.np2Tensor(lr, rgb_range=self.args.rgb_range)
return lr_t, -1, '{}_{:0>5}'.format(self.filename, self.n_frames)
else:
vidcap.release()
return None
def __len__(self):
return self.total_frames
def set_scale(self, idx_scale):
self.idx_scale = idx_scale
| 1,207 | 25.844444 | 77 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/DN_RGB/code/data/srdata.py | import os
import glob
import random
import pickle
from data import common
import numpy as np
import imageio
import torch
import torch.utils.data as data
class SRData(data.Dataset):
def __init__(self, args, name='', train=True, benchmark=False):
self.args = args
self.name = name
self.train = train
self.split = 'train' if train else 'test'
self.do_eval = True
self.benchmark = benchmark
self.input_large = (args.model == 'VDSR')
self.scale = args.scale
self.idx_scale = 0
self._set_filesystem(args.dir_data)
if args.ext.find('img') < 0:
path_bin = os.path.join(self.apath, 'bin')
os.makedirs(path_bin, exist_ok=True)
list_hr, list_lr = self._scan()
if args.ext.find('img') >= 0 or benchmark:
self.images_hr, self.images_lr = list_hr, list_lr
elif args.ext.find('sep') >= 0:
os.makedirs(
self.dir_hr.replace(self.apath, path_bin),
exist_ok=True
)
for s in self.scale:
os.makedirs(
os.path.join(
self.dir_lr.replace(self.apath, path_bin),
'X{}'.format(s)
),
exist_ok=True
)
self.images_hr, self.images_lr = [], [[] for _ in self.scale]
for h in list_hr:
b = h.replace(self.apath, path_bin)
b = b.replace(self.ext[0], '.pt')
self.images_hr.append(b)
self._check_and_load(args.ext, h, b, verbose=True)
for i, ll in enumerate(list_lr):
for l in ll:
b = l.replace(self.apath, path_bin)
b = b.replace(self.ext[1], '.pt')
self.images_lr[i].append(b)
self._check_and_load(args.ext, l, b, verbose=True)
if train:
n_patches = args.batch_size * args.test_every
n_images = len(args.data_train) * len(self.images_hr)
if n_images == 0:
self.repeat = 0
else:
self.repeat = max(n_patches // n_images, 1)
# Below functions as used to prepare images
def _scan(self):
names_hr = sorted(
glob.glob(os.path.join(self.dir_hr, '*' + self.ext[0]))
)
names_lr = [[] for _ in self.scale]
for f in names_hr:
filename, _ = os.path.splitext(os.path.basename(f))
for si, s in enumerate(self.scale):
names_lr[si].append(os.path.join(
self.dir_lr, 'X{}/{}{}'.format(
s, filename, self.ext[1]
)
))
return names_hr, names_lr
def _set_filesystem(self, dir_data):
self.apath = os.path.join(dir_data, self.name)
self.dir_hr = os.path.join(self.apath, 'HR')
self.dir_lr = os.path.join(self.apath, 'LR_bicubic')
if self.input_large: self.dir_lr += 'L'
self.ext = ('.png', '.png')
def _check_and_load(self, ext, img, f, verbose=True):
if not os.path.isfile(f) or ext.find('reset') >= 0:
if verbose:
print('Making a binary: {}'.format(f))
with open(f, 'wb') as _f:
pickle.dump(imageio.imread(img), _f)
def __getitem__(self, idx):
lr, hr, filename = self._load_file(idx)
pair = self.get_patch(lr, hr)
pair = common.set_channel(*pair, n_channels=self.args.n_colors)
pair_t = common.np2Tensor(*pair, rgb_range=self.args.rgb_range)
return pair_t[0], pair_t[1], filename
def __len__(self):
if self.train:
return len(self.images_hr) * self.repeat
else:
return len(self.images_hr)
def _get_index(self, idx):
if self.train:
return idx % len(self.images_hr)
else:
return idx
def _load_file(self, idx):
idx = self._get_index(idx)
f_hr = self.images_hr[idx]
f_lr = self.images_lr[self.idx_scale][idx]
filename, _ = os.path.splitext(os.path.basename(f_hr))
if self.args.ext == 'img' or self.benchmark:
hr = imageio.imread(f_hr)
lr = imageio.imread(f_lr)
elif self.args.ext.find('sep') >= 0:
with open(f_hr, 'rb') as _f:
hr = pickle.load(_f)
with open(f_lr, 'rb') as _f:
lr = pickle.load(_f)
return lr, hr, filename
def get_patch(self, lr, hr):
scale = self.scale[self.idx_scale]
if self.train:
lr, hr = common.get_patch(
lr, hr,
patch_size=self.args.patch_size,
scale=scale,
multi=(len(self.scale) > 1),
input_large=self.input_large
)
if not self.args.no_augment: lr, hr = common.augment(lr, hr)
else:
ih, iw = lr.shape[:2]
hr = hr[0:ih * scale, 0:iw * scale]
return lr, hr
def set_scale(self, idx_scale):
if not self.input_large:
self.idx_scale = idx_scale
else:
self.idx_scale = random.randint(0, len(self.scale) - 1)
| 5,337 | 32.78481 | 73 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/DN_RGB/code/data/demo.py | import os
from data import common
import numpy as np
import imageio
import torch
import torch.utils.data as data
class Demo(data.Dataset):
def __init__(self, args, name='Demo', train=False, benchmark=False):
self.args = args
self.name = name
self.scale = args.scale
self.idx_scale = 0
self.train = False
self.benchmark = benchmark
self.filelist = []
for f in os.listdir(args.dir_demo):
if f.find('.png') >= 0 or f.find('.jp') >= 0:
self.filelist.append(os.path.join(args.dir_demo, f))
self.filelist.sort()
def __getitem__(self, idx):
filename = os.path.splitext(os.path.basename(self.filelist[idx]))[0]
lr = imageio.imread(self.filelist[idx])
lr, = common.set_channel(lr, n_channels=self.args.n_colors)
lr_t, = common.np2Tensor(lr, rgb_range=self.args.rgb_range)
return lr_t, -1, filename
def __len__(self):
return len(self.filelist)
def set_scale(self, idx_scale):
self.idx_scale = idx_scale
| 1,075 | 25.9 | 76 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/DN_RGB/code/data/common.py | import random
import numpy as np
import skimage.color as sc
import torch
def get_patch(*args, patch_size=96, scale=1, multi=False, input_large=False):
ih, iw = args[0].shape[:2]
if not input_large:
p = 1 if multi else 1
tp = p * patch_size
ip = tp // 1
else:
tp = patch_size
ip = patch_size
ix = random.randrange(0, iw - ip + 1)
iy = random.randrange(0, ih - ip + 1)
if not input_large:
tx, ty = 1 * ix, 1 * iy
else:
tx, ty = ix, iy
ret = [
args[0][iy:iy + ip, ix:ix + ip, :],
*[a[ty:ty + tp, tx:tx + tp, :] for a in args[1:]]
]
return ret
def set_channel(*args, n_channels=3):
def _set_channel(img):
if img.ndim == 2:
img = np.expand_dims(img, axis=2)
c = img.shape[2]
if n_channels == 1 and c == 3:
img = np.expand_dims(sc.rgb2ycbcr(img)[:, :, 0], 2)
elif n_channels == 3 and c == 1:
img = np.concatenate([img] * n_channels, 2)
return img
return [_set_channel(a) for a in args]
def np2Tensor(*args, rgb_range=255):
def _np2Tensor(img):
np_transpose = np.ascontiguousarray(img.transpose((2, 0, 1)))
tensor = torch.from_numpy(np_transpose).float()
tensor.mul_(rgb_range / 255)
return tensor
return [_np2Tensor(a) for a in args]
def augment(*args, hflip=True, rot=True):
hflip = hflip and random.random() < 0.5
vflip = rot and random.random() < 0.5
rot90 = rot and random.random() < 0.5
def _augment(img):
if hflip: img = img[:, ::-1, :]
if vflip: img = img[::-1, :, :]
if rot90: img = img.transpose(1, 0, 2)
return img
return [_augment(a) for a in args]
| 1,770 | 23.260274 | 77 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/DN_RGB/code/data/__init__.py | from importlib import import_module
#from dataloader import MSDataLoader
from torch.utils.data import dataloader
from torch.utils.data import ConcatDataset
# This is a simple wrapper function for ConcatDataset
class MyConcatDataset(ConcatDataset):
def __init__(self, datasets):
super(MyConcatDataset, self).__init__(datasets)
self.train = datasets[0].train
def set_scale(self, idx_scale):
for d in self.datasets:
if hasattr(d, 'set_scale'): d.set_scale(idx_scale)
class Data:
def __init__(self, args):
self.loader_train = None
if not args.test_only:
datasets = []
for d in args.data_train:
module_name = d if d.find('DIV2K-Q') < 0 else 'DIV2KJPEG'
m = import_module('data.' + module_name.lower())
datasets.append(getattr(m, module_name)(args, name=d))
self.loader_train = dataloader.DataLoader(
MyConcatDataset(datasets),
batch_size=args.batch_size,
shuffle=True,
pin_memory=not args.cpu,
num_workers=args.n_threads,
)
self.loader_test = []
for d in args.data_test:
if d in ['CBSD68','Kodak24','Set5', 'Set14', 'B100', 'Urban100']:
m = import_module('data.benchmark')
testset = getattr(m, 'Benchmark')(args, train=False, name=d)
else:
module_name = d if d.find('DIV2K-Q') < 0 else 'DIV2KJPEG'
m = import_module('data.' + module_name.lower())
testset = getattr(m, module_name)(args, train=False, name=d)
self.loader_test.append(
dataloader.DataLoader(
testset,
batch_size=1,
shuffle=False,
pin_memory=not args.cpu,
num_workers=args.n_threads,
)
)
| 1,968 | 36.150943 | 77 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/DN_RGB/code/data/div2k.py | import os
from data import srdata
class DIV2K(srdata.SRData):
def __init__(self, args, name='DIV2K', train=True, benchmark=False):
data_range = [r.split('-') for r in args.data_range.split('/')]
if train:
data_range = data_range[0]
else:
if args.test_only and len(data_range) == 1:
data_range = data_range[0]
else:
data_range = data_range[1]
self.begin, self.end = list(map(lambda x: int(x), data_range))
super(DIV2K, self).__init__(
args, name=name, train=train, benchmark=benchmark
)
def _scan(self):
names_hr, names_lr = super(DIV2K, self)._scan()
names_hr = names_hr[self.begin - 1:self.end]
names_lr = [n[self.begin - 1:self.end] for n in names_lr]
return names_hr, names_lr
def _set_filesystem(self, dir_data):
super(DIV2K, self)._set_filesystem(dir_data)
self.dir_hr = os.path.join(self.apath, 'DIV2K_train_HR')
self.dir_lr = os.path.join(self.apath, 'DIV2K_train_LR_bicubic')
if self.input_large: self.dir_lr += 'L'
| 1,134 | 33.393939 | 72 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/DN_RGB/code/model/rcan.py | ## ECCV-2018-Image Super-Resolution Using Very Deep Residual Channel Attention Networks
## https://arxiv.org/abs/1807.02758
from model import common
import torch.nn as nn
def make_model(args, parent=False):
return RCAN(args)
## Channel Attention (CA) Layer
class CALayer(nn.Module):
def __init__(self, channel, reduction=16):
super(CALayer, self).__init__()
# global average pooling: feature --> point
self.avg_pool = nn.AdaptiveAvgPool2d(1)
# feature channel downscale and upscale --> channel weight
self.conv_du = nn.Sequential(
nn.Conv2d(channel, channel // reduction, 1, padding=0, bias=True),
nn.ReLU(inplace=True),
nn.Conv2d(channel // reduction, channel, 1, padding=0, bias=True),
nn.Sigmoid()
)
def forward(self, x):
y = self.avg_pool(x)
y = self.conv_du(y)
return x * y
## Residual Channel Attention Block (RCAB)
class RCAB(nn.Module):
def __init__(
self, conv, n_feat, kernel_size, reduction,
bias=True, bn=False, act=nn.ReLU(True), res_scale=1):
super(RCAB, self).__init__()
modules_body = []
for i in range(2):
modules_body.append(conv(n_feat, n_feat, kernel_size, bias=bias))
if bn: modules_body.append(nn.BatchNorm2d(n_feat))
if i == 0: modules_body.append(act)
modules_body.append(CALayer(n_feat, reduction))
self.body = nn.Sequential(*modules_body)
self.res_scale = res_scale
def forward(self, x):
res = self.body(x)
#res = self.body(x).mul(self.res_scale)
res += x
return res
## Residual Group (RG)
class ResidualGroup(nn.Module):
def __init__(self, conv, n_feat, kernel_size, reduction, act, res_scale, n_resblocks):
super(ResidualGroup, self).__init__()
modules_body = []
modules_body = [
RCAB(
conv, n_feat, kernel_size, reduction, bias=True, bn=False, act=nn.ReLU(True), res_scale=1) \
for _ in range(n_resblocks)]
modules_body.append(conv(n_feat, n_feat, kernel_size))
self.body = nn.Sequential(*modules_body)
def forward(self, x):
res = self.body(x)
res += x
return res
## Residual Channel Attention Network (RCAN)
class RCAN(nn.Module):
def __init__(self, args, conv=common.default_conv):
super(RCAN, self).__init__()
n_resgroups = args.n_resgroups
n_resblocks = args.n_resblocks
n_feats = args.n_feats
kernel_size = 3
reduction = args.reduction
scale = args.scale[0]
act = nn.ReLU(True)
# RGB mean for DIV2K
rgb_mean = (0.4488, 0.4371, 0.4040)
rgb_std = (1.0, 1.0, 1.0)
self.sub_mean = common.MeanShift(args.rgb_range, rgb_mean, rgb_std)
# define head module
modules_head = [conv(args.n_colors, n_feats, kernel_size)]
# define body module
modules_body = [
ResidualGroup(
conv, n_feats, kernel_size, reduction, act=act, res_scale=args.res_scale, n_resblocks=n_resblocks) \
for _ in range(n_resgroups)]
modules_body.append(conv(n_feats, n_feats, kernel_size))
# define tail module
modules_tail = [
common.Upsampler(conv, scale, n_feats, act=False),
conv(n_feats, args.n_colors, kernel_size)]
self.add_mean = common.MeanShift(args.rgb_range, rgb_mean, rgb_std, 1)
self.head = nn.Sequential(*modules_head)
self.body = nn.Sequential(*modules_body)
self.tail = nn.Sequential(*modules_tail)
def forward(self, x):
x = self.sub_mean(x)
x = self.head(x)
res = self.body(x)
res += x
x = self.tail(res)
x = self.add_mean(x)
return x
def load_state_dict(self, state_dict, strict=False):
own_state = self.state_dict()
for name, param in state_dict.items():
if name in own_state:
if isinstance(param, nn.Parameter):
param = param.data
try:
own_state[name].copy_(param)
except Exception:
if name.find('tail') >= 0:
print('Replace pre-trained upsampler to new one...')
else:
raise RuntimeError('While copying the parameter named {}, '
'whose dimensions in the model are {} and '
'whose dimensions in the checkpoint are {}.'
.format(name, own_state[name].size(), param.size()))
elif strict:
if name.find('tail') == -1:
raise KeyError('unexpected key "{}" in state_dict'
.format(name))
if strict:
missing = set(own_state.keys()) - set(state_dict.keys())
if len(missing) > 0:
raise KeyError('missing keys in state_dict: "{}"'.format(missing))
| 5,178 | 34.717241 | 116 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/DN_RGB/code/model/ddbpn.py | # Deep Back-Projection Networks For Super-Resolution
# https://arxiv.org/abs/1803.02735
from model import common
import torch
import torch.nn as nn
def make_model(args, parent=False):
return DDBPN(args)
def projection_conv(in_channels, out_channels, scale, up=True):
kernel_size, stride, padding = {
2: (6, 2, 2),
4: (8, 4, 2),
8: (12, 8, 2)
}[scale]
if up:
conv_f = nn.ConvTranspose2d
else:
conv_f = nn.Conv2d
return conv_f(
in_channels, out_channels, kernel_size,
stride=stride, padding=padding
)
class DenseProjection(nn.Module):
def __init__(self, in_channels, nr, scale, up=True, bottleneck=True):
super(DenseProjection, self).__init__()
if bottleneck:
self.bottleneck = nn.Sequential(*[
nn.Conv2d(in_channels, nr, 1),
nn.PReLU(nr)
])
inter_channels = nr
else:
self.bottleneck = None
inter_channels = in_channels
self.conv_1 = nn.Sequential(*[
projection_conv(inter_channels, nr, scale, up),
nn.PReLU(nr)
])
self.conv_2 = nn.Sequential(*[
projection_conv(nr, inter_channels, scale, not up),
nn.PReLU(inter_channels)
])
self.conv_3 = nn.Sequential(*[
projection_conv(inter_channels, nr, scale, up),
nn.PReLU(nr)
])
def forward(self, x):
if self.bottleneck is not None:
x = self.bottleneck(x)
a_0 = self.conv_1(x)
b_0 = self.conv_2(a_0)
e = b_0.sub(x)
a_1 = self.conv_3(e)
out = a_0.add(a_1)
return out
class DDBPN(nn.Module):
def __init__(self, args):
super(DDBPN, self).__init__()
scale = args.scale[0]
n0 = 128
nr = 32
self.depth = 6
rgb_mean = (0.4488, 0.4371, 0.4040)
rgb_std = (1.0, 1.0, 1.0)
self.sub_mean = common.MeanShift(args.rgb_range, rgb_mean, rgb_std)
initial = [
nn.Conv2d(args.n_colors, n0, 3, padding=1),
nn.PReLU(n0),
nn.Conv2d(n0, nr, 1),
nn.PReLU(nr)
]
self.initial = nn.Sequential(*initial)
self.upmodules = nn.ModuleList()
self.downmodules = nn.ModuleList()
channels = nr
for i in range(self.depth):
self.upmodules.append(
DenseProjection(channels, nr, scale, True, i > 1)
)
if i != 0:
channels += nr
channels = nr
for i in range(self.depth - 1):
self.downmodules.append(
DenseProjection(channels, nr, scale, False, i != 0)
)
channels += nr
reconstruction = [
nn.Conv2d(self.depth * nr, args.n_colors, 3, padding=1)
]
self.reconstruction = nn.Sequential(*reconstruction)
self.add_mean = common.MeanShift(args.rgb_range, rgb_mean, rgb_std, 1)
def forward(self, x):
x = self.sub_mean(x)
x = self.initial(x)
h_list = []
l_list = []
for i in range(self.depth - 1):
if i == 0:
l = x
else:
l = torch.cat(l_list, dim=1)
h_list.append(self.upmodules[i](l))
l_list.append(self.downmodules[i](torch.cat(h_list, dim=1)))
h_list.append(self.upmodules[-1](torch.cat(l_list, dim=1)))
out = self.reconstruction(torch.cat(h_list, dim=1))
out = self.add_mean(out)
return out
| 3,629 | 26.5 | 78 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/DN_RGB/code/model/rdn.py | # Residual Dense Network for Image Super-Resolution
# https://arxiv.org/abs/1802.08797
from model import common
import torch
import torch.nn as nn
def make_model(args, parent=False):
return RDN(args)
class RDB_Conv(nn.Module):
def __init__(self, inChannels, growRate, kSize=3):
super(RDB_Conv, self).__init__()
Cin = inChannels
G = growRate
self.conv = nn.Sequential(*[
nn.Conv2d(Cin, G, kSize, padding=(kSize-1)//2, stride=1),
nn.ReLU()
])
def forward(self, x):
out = self.conv(x)
return torch.cat((x, out), 1)
class RDB(nn.Module):
def __init__(self, growRate0, growRate, nConvLayers, kSize=3):
super(RDB, self).__init__()
G0 = growRate0
G = growRate
C = nConvLayers
convs = []
for c in range(C):
convs.append(RDB_Conv(G0 + c*G, G))
self.convs = nn.Sequential(*convs)
# Local Feature Fusion
self.LFF = nn.Conv2d(G0 + C*G, G0, 1, padding=0, stride=1)
def forward(self, x):
return self.LFF(self.convs(x)) + x
class RDN(nn.Module):
def __init__(self, args):
super(RDN, self).__init__()
r = args.scale[0]
G0 = args.G0
kSize = args.RDNkSize
# number of RDB blocks, conv layers, out channels
self.D, C, G = {
'A': (20, 6, 32),
'B': (16, 8, 64),
}[args.RDNconfig]
# Shallow feature extraction net
self.SFENet1 = nn.Conv2d(args.n_colors, G0, kSize, padding=(kSize-1)//2, stride=1)
self.SFENet2 = nn.Conv2d(G0, G0, kSize, padding=(kSize-1)//2, stride=1)
# Redidual dense blocks and dense feature fusion
self.RDBs = nn.ModuleList()
for i in range(self.D):
self.RDBs.append(
RDB(growRate0 = G0, growRate = G, nConvLayers = C)
)
# Global Feature Fusion
self.GFF = nn.Sequential(*[
nn.Conv2d(self.D * G0, G0, 1, padding=0, stride=1),
nn.Conv2d(G0, G0, kSize, padding=(kSize-1)//2, stride=1)
])
# Up-sampling net
if r == 2 or r == 3:
self.UPNet = nn.Sequential(*[
nn.Conv2d(G0, G * r * r, kSize, padding=(kSize-1)//2, stride=1),
nn.PixelShuffle(r),
nn.Conv2d(G, args.n_colors, kSize, padding=(kSize-1)//2, stride=1)
])
elif r == 4:
self.UPNet = nn.Sequential(*[
nn.Conv2d(G0, G * 4, kSize, padding=(kSize-1)//2, stride=1),
nn.PixelShuffle(2),
nn.Conv2d(G, G * 4, kSize, padding=(kSize-1)//2, stride=1),
nn.PixelShuffle(2),
nn.Conv2d(G, args.n_colors, kSize, padding=(kSize-1)//2, stride=1)
])
else:
raise ValueError("scale must be 2 or 3 or 4.")
def forward(self, x):
f__1 = self.SFENet1(x)
x = self.SFENet2(f__1)
RDBs_out = []
for i in range(self.D):
x = self.RDBs[i](x)
RDBs_out.append(x)
x = self.GFF(torch.cat(RDBs_out,1))
x += f__1
return self.UPNet(x)
| 3,202 | 29.216981 | 90 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/DN_RGB/code/model/mdsr.py | from model import common
import torch.nn as nn
def make_model(args, parent=False):
return MDSR(args)
class MDSR(nn.Module):
def __init__(self, args, conv=common.default_conv):
super(MDSR, self).__init__()
n_resblocks = args.n_resblocks
n_feats = args.n_feats
kernel_size = 3
self.scale_idx = 0
act = nn.ReLU(True)
rgb_mean = (0.4488, 0.4371, 0.4040)
rgb_std = (1.0, 1.0, 1.0)
self.sub_mean = common.MeanShift(args.rgb_range, rgb_mean, rgb_std)
m_head = [conv(args.n_colors, n_feats, kernel_size)]
self.pre_process = nn.ModuleList([
nn.Sequential(
common.ResBlock(conv, n_feats, 5, act=act),
common.ResBlock(conv, n_feats, 5, act=act)
) for _ in args.scale
])
m_body = [
common.ResBlock(
conv, n_feats, kernel_size, act=act
) for _ in range(n_resblocks)
]
m_body.append(conv(n_feats, n_feats, kernel_size))
self.upsample = nn.ModuleList([
common.Upsampler(
conv, s, n_feats, act=False
) for s in args.scale
])
m_tail = [conv(n_feats, args.n_colors, kernel_size)]
self.add_mean = common.MeanShift(args.rgb_range, rgb_mean, rgb_std, 1)
self.head = nn.Sequential(*m_head)
self.body = nn.Sequential(*m_body)
self.tail = nn.Sequential(*m_tail)
def forward(self, x):
x = self.sub_mean(x)
x = self.head(x)
x = self.pre_process[self.scale_idx](x)
res = self.body(x)
res += x
x = self.upsample[self.scale_idx](res)
x = self.tail(x)
x = self.add_mean(x)
return x
def set_scale(self, scale_idx):
self.scale_idx = scale_idx
| 1,837 | 25.637681 | 78 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/DN_RGB/code/model/common.py | import math
import torch
import torch.nn as nn
import torch.nn.functional as F
def default_conv(in_channels, out_channels, kernel_size,stride=1, bias=True):
return nn.Conv2d(
in_channels, out_channels, kernel_size,
padding=(kernel_size//2),stride=stride, bias=bias)
class MeanShift(nn.Conv2d):
def __init__(
self, rgb_range,
rgb_mean=(0.4488, 0.4371, 0.4040), rgb_std=(1.0, 1.0, 1.0), sign=-1):
super(MeanShift, self).__init__(3, 3, kernel_size=1)
std = torch.Tensor(rgb_std)
self.weight.data = torch.eye(3).view(3, 3, 1, 1) / std.view(3, 1, 1, 1)
self.bias.data = sign * rgb_range * torch.Tensor(rgb_mean) / std
for p in self.parameters():
p.requires_grad = False
class BasicBlock(nn.Sequential):
def __init__(
self, conv, in_channels, out_channels, kernel_size, stride=1, bias=True,
bn=False, act=nn.PReLU()):
m = [conv(in_channels, out_channels, kernel_size, bias=bias)]
if bn:
m.append(nn.BatchNorm2d(out_channels))
if act is not None:
m.append(act)
super(BasicBlock, self).__init__(*m)
class ResBlock(nn.Module):
def __init__(
self, conv, n_feats, kernel_size,
bias=True, bn=False, act=nn.PReLU(), res_scale=1):
super(ResBlock, self).__init__()
m = []
for i in range(2):
m.append(conv(n_feats, n_feats, kernel_size, bias=bias))
if bn:
m.append(nn.BatchNorm2d(n_feats))
if i == 0:
m.append(act)
self.body = nn.Sequential(*m)
self.res_scale = res_scale
def forward(self, x):
res = self.body(x).mul(self.res_scale)
res += x
return res
class Upsampler(nn.Sequential):
def __init__(self, conv, scale, n_feats, bn=False, act=False, bias=True):
m = []
if (scale & (scale - 1)) == 0: # Is scale = 2^n?
for _ in range(int(math.log(scale, 2))):
m.append(conv(n_feats, 4 * n_feats, 3, bias))
m.append(nn.PixelShuffle(2))
if bn:
m.append(nn.BatchNorm2d(n_feats))
if act == 'relu':
m.append(nn.ReLU(True))
elif act == 'prelu':
m.append(nn.PReLU(n_feats))
elif scale == 3:
m.append(conv(n_feats, 9 * n_feats, 3, bias))
m.append(nn.PixelShuffle(3))
if bn:
m.append(nn.BatchNorm2d(n_feats))
if act == 'relu':
m.append(nn.ReLU(True))
elif act == 'prelu':
m.append(nn.PReLU(n_feats))
else:
raise NotImplementedError
super(Upsampler, self).__init__(*m)
| 2,799 | 30.460674 | 80 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/DN_RGB/code/model/__init__.py | import os
from importlib import import_module
import torch
import torch.nn as nn
from torch.autograd import Variable
class Model(nn.Module):
def __init__(self, args, ckp):
super(Model, self).__init__()
print('Making model...')
self.scale = args.scale
self.idx_scale = 0
self.self_ensemble = args.self_ensemble
self.chop = args.chop
self.precision = args.precision
self.cpu = args.cpu
self.device = torch.device('cpu' if args.cpu else 'cuda')
self.n_GPUs = args.n_GPUs
self.save_models = args.save_models
module = import_module('model.' + args.model.lower())
self.model = module.make_model(args).to(self.device)
if args.precision == 'half': self.model.half()
if not args.cpu and args.n_GPUs > 1:
self.model = nn.DataParallel(self.model, range(args.n_GPUs))
self.load(
ckp.dir,
pre_train=args.pre_train,
resume=args.resume,
cpu=args.cpu
)
print(self.model, file=ckp.log_file)
def forward(self, x, idx_scale):
self.idx_scale = idx_scale
target = self.get_model()
if hasattr(target, 'set_scale'):
target.set_scale(idx_scale)
if self.self_ensemble and not self.training:
if self.chop:
forward_function = self.forward_chop
else:
forward_function = self.model.forward
return self.forward_x8(x, forward_function)
elif self.chop and not self.training:
return self.forward_chop(x)
else:
return self.model(x)
def get_model(self):
if self.n_GPUs == 1:
return self.model
else:
return self.model.module
def state_dict(self, **kwargs):
target = self.get_model()
return target.state_dict(**kwargs)
def save(self, apath, epoch, is_best=False):
target = self.get_model()
torch.save(
target.state_dict(),
os.path.join(apath, 'model_latest.pt')
)
if is_best:
torch.save(
target.state_dict(),
os.path.join(apath, 'model_best.pt')
)
if self.save_models:
torch.save(
target.state_dict(),
os.path.join(apath, 'model_{}.pt'.format(epoch))
)
def load(self, apath, pre_train='.', resume=-1, cpu=False):
if cpu:
kwargs = {'map_location': lambda storage, loc: storage}
else:
kwargs = {}
if resume == -1:
self.get_model().load_state_dict(
torch.load(
os.path.join(apath, 'model_latest.pt'),
**kwargs
),
strict=False
)
elif resume == 0:
if pre_train != '.':
print('Loading model from {}'.format(pre_train))
self.get_model().load_state_dict(
torch.load(pre_train, **kwargs),
strict=False
)
else:
self.get_model().load_state_dict(
torch.load(
os.path.join(apath, 'model', 'model_{}.pt'.format(resume)),
**kwargs
),
strict=False
)
def forward_chop(self, x, shave=10, min_size=6800):
scale = self.scale[self.idx_scale]
scale = 1
n_GPUs = min(self.n_GPUs, 4)
b, c, h, w = x.size()
h_half, w_half = h // 2, w // 2
h_size, w_size = h_half + shave, w_half + shave
lr_list = [
x[:, :, 0:h_size, 0:w_size],
x[:, :, 0:h_size, (w - w_size):w],
x[:, :, (h - h_size):h, 0:w_size],
x[:, :, (h - h_size):h, (w - w_size):w]]
if w_size * h_size < min_size:
sr_list = []
for i in range(0, 4, n_GPUs):
lr_batch = torch.cat(lr_list[i:(i + n_GPUs)], dim=0)
sr_batch = self.model(lr_batch)
sr_list.extend(sr_batch.chunk(n_GPUs, dim=0))
else:
sr_list = [
self.forward_chop(patch, shave=shave, min_size=min_size) \
for patch in lr_list
]
h, w = scale * h, scale * w
h_half, w_half = scale * h_half, scale * w_half
h_size, w_size = scale * h_size, scale * w_size
shave *= scale
output = x.new(b, c, h, w)
output[:, :, 0:h_half, 0:w_half] \
= sr_list[0][:, :, 0:h_half, 0:w_half]
output[:, :, 0:h_half, w_half:w] \
= sr_list[1][:, :, 0:h_half, (w_size - w + w_half):w_size]
output[:, :, h_half:h, 0:w_half] \
= sr_list[2][:, :, (h_size - h + h_half):h_size, 0:w_half]
output[:, :, h_half:h, w_half:w] \
= sr_list[3][:, :, (h_size - h + h_half):h_size, (w_size - w + w_half):w_size]
return output
def forward_x8(self, x, forward_function):
def _transform(v, op):
if self.precision != 'single': v = v.float()
v2np = v.data.cpu().numpy()
if op == 'v':
tfnp = v2np[:, :, :, ::-1].copy()
elif op == 'h':
tfnp = v2np[:, :, ::-1, :].copy()
elif op == 't':
tfnp = v2np.transpose((0, 1, 3, 2)).copy()
ret = torch.Tensor(tfnp).to(self.device)
if self.precision == 'half': ret = ret.half()
return ret
lr_list = [x]
for tf in 'v', 'h', 't':
lr_list.extend([_transform(t, tf) for t in lr_list])
sr_list = [forward_function(aug) for aug in lr_list]
for i in range(len(sr_list)):
if i > 3:
sr_list[i] = _transform(sr_list[i], 't')
if i % 4 > 1:
sr_list[i] = _transform(sr_list[i], 'h')
if (i % 4) % 2 == 1:
sr_list[i] = _transform(sr_list[i], 'v')
output_cat = torch.cat(sr_list, dim=0)
output = output_cat.mean(dim=0, keepdim=True)
return output
| 6,200 | 31.465969 | 90 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/DN_RGB/code/model/panet.py | from model import common
from model import attention
import torch.nn as nn
def make_model(args, parent=False):
return PANET(args)
class PANET(nn.Module):
def __init__(self, args, conv=common.default_conv):
super(PANET, self).__init__()
n_resblocks = args.n_resblocks
n_feats = args.n_feats
kernel_size = 3
scale = args.scale[0]
rgb_mean = (0.4488, 0.4371, 0.4040)
rgb_std = (1.0, 1.0, 1.0)
self.sub_mean = common.MeanShift(args.rgb_range, rgb_mean, rgb_std)
msa = attention.PyramidAttention()
# define head module
m_head = [conv(args.n_colors, n_feats, kernel_size)]
# define body module
m_body = [
common.ResBlock(
conv, n_feats, kernel_size, nn.PReLU(), res_scale=args.res_scale
) for _ in range(n_resblocks//2)
]
m_body.append(msa)
for i in range(n_resblocks//2):
m_body.append(common.ResBlock(conv,n_feats,kernel_size,nn.PReLU(),res_scale=args.res_scale))
m_body.append(conv(n_feats, n_feats, kernel_size))
# define tail module
#m_tail = [
# common.Upsampler(conv, scale, n_feats, act=False),
# conv(n_feats, args.n_colors, kernel_size)
#]
m_tail = [
conv(n_feats, args.n_colors, kernel_size)
]
self.add_mean = common.MeanShift(args.rgb_range, rgb_mean, rgb_std, 1)
self.head = nn.Sequential(*m_head)
self.body = nn.Sequential(*m_body)
self.tail = nn.Sequential(*m_tail)
def forward(self, x):
#x = self.sub_mean(x)
x = self.head(x)
res = self.body(x)
res += x
x = self.tail(res)
#x = self.add_mean(x)
return x
def load_state_dict(self, state_dict, strict=True):
own_state = self.state_dict()
for name, param in state_dict.items():
if name in own_state:
if isinstance(param, nn.Parameter):
param = param.data
try:
own_state[name].copy_(param)
except Exception:
if name.find('tail') == -1:
raise RuntimeError('While copying the parameter named {}, '
'whose dimensions in the model are {} and '
'whose dimensions in the checkpoint are {}.'
.format(name, own_state[name].size(), param.size()))
elif strict:
if name.find('tail') == -1:
raise KeyError('unexpected key "{}" in state_dict'
.format(name))
| 2,779 | 32.493976 | 104 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/DN_RGB/code/model/attention.py | import torch
import torch.nn as nn
import torch.nn.functional as F
from torchvision import transforms
from torchvision import utils as vutils
from model import common
from utils.tools import extract_image_patches,\
reduce_mean, reduce_sum, same_padding
class PyramidAttention(nn.Module):
def __init__(self, level=5, res_scale=1, channel=64, reduction=2, ksize=3, stride=1, softmax_scale=10, average=True, conv=common.default_conv):
super(PyramidAttention, self).__init__()
self.ksize = ksize
self.stride = stride
self.res_scale = res_scale
self.softmax_scale = softmax_scale
self.scale = [1-i/10 for i in range(level)]
self.average = average
escape_NaN = torch.FloatTensor([1e-4])
self.register_buffer('escape_NaN', escape_NaN)
self.conv_match_L_base = common.BasicBlock(conv,channel,channel//reduction, 1, bn=False, act=nn.PReLU())
self.conv_match = common.BasicBlock(conv,channel, channel//reduction, 1, bn=False, act=nn.PReLU())
self.conv_assembly = common.BasicBlock(conv,channel, channel,1,bn=False, act=nn.PReLU())
def forward(self, input):
res = input
#theta
match_base = self.conv_match_L_base(input)
shape_base = list(res.size())
input_groups = torch.split(match_base,1,dim=0)
# patch size for matching
kernel = self.ksize
# raw_w is for reconstruction
raw_w = []
# w is for matching
w = []
#build feature pyramid
for i in range(len(self.scale)):
ref = input
if self.scale[i]!=1:
ref = F.interpolate(input, scale_factor=self.scale[i], mode='bicubic')
#feature transformation function f
base = self.conv_assembly(ref)
shape_input = base.shape
#sampling
raw_w_i = extract_image_patches(base, ksizes=[kernel, kernel],
strides=[self.stride,self.stride],
rates=[1, 1],
padding='same') # [N, C*k*k, L]
raw_w_i = raw_w_i.view(shape_input[0], shape_input[1], kernel, kernel, -1)
raw_w_i = raw_w_i.permute(0, 4, 1, 2, 3) # raw_shape: [N, L, C, k, k]
raw_w_i_groups = torch.split(raw_w_i, 1, dim=0)
raw_w.append(raw_w_i_groups)
#feature transformation function g
ref_i = self.conv_match(ref)
shape_ref = ref_i.shape
#sampling
w_i = extract_image_patches(ref_i, ksizes=[self.ksize, self.ksize],
strides=[self.stride, self.stride],
rates=[1, 1],
padding='same')
w_i = w_i.view(shape_ref[0], shape_ref[1], self.ksize, self.ksize, -1)
w_i = w_i.permute(0, 4, 1, 2, 3) # w shape: [N, L, C, k, k]
w_i_groups = torch.split(w_i, 1, dim=0)
w.append(w_i_groups)
y = []
for idx, xi in enumerate(input_groups):
#group in a filter
wi = torch.cat([w[i][idx][0] for i in range(len(self.scale))],dim=0) # [L, C, k, k]
#normalize
max_wi = torch.max(torch.sqrt(reduce_sum(torch.pow(wi, 2),
axis=[1, 2, 3],
keepdim=True)),
self.escape_NaN)
wi_normed = wi/ max_wi
#matching
xi = same_padding(xi, [self.ksize, self.ksize], [1, 1], [1, 1]) # xi: 1*c*H*W
yi = F.conv2d(xi, wi_normed, stride=1) # [1, L, H, W] L = shape_ref[2]*shape_ref[3]
yi = yi.view(1,wi.shape[0], shape_base[2], shape_base[3]) # (B=1, C=32*32, H=32, W=32)
# softmax matching score
yi = F.softmax(yi*self.softmax_scale, dim=1)
if self.average == False:
yi = (yi == yi.max(dim=1,keepdim=True)[0]).float()
# deconv for patch pasting
raw_wi = torch.cat([raw_w[i][idx][0] for i in range(len(self.scale))],dim=0)
yi = F.conv_transpose2d(yi, raw_wi, stride=self.stride,padding=1)/4.
y.append(yi)
y = torch.cat(y, dim=0)+res*self.res_scale # back to the mini-batch
return y | 4,427 | 46.106383 | 147 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/DN_RGB/code/model/vdsr.py | from model import common
import torch.nn as nn
import torch.nn.init as init
url = {
'r20f64': ''
}
def make_model(args, parent=False):
return VDSR(args)
class VDSR(nn.Module):
def __init__(self, args, conv=common.default_conv):
super(VDSR, self).__init__()
n_resblocks = args.n_resblocks
n_feats = args.n_feats
kernel_size = 3
self.url = url['r{}f{}'.format(n_resblocks, n_feats)]
self.sub_mean = common.MeanShift(args.rgb_range)
self.add_mean = common.MeanShift(args.rgb_range, sign=1)
def basic_block(in_channels, out_channels, act):
return common.BasicBlock(
conv, in_channels, out_channels, kernel_size,
bias=True, bn=False, act=act
)
# define body module
m_body = []
m_body.append(basic_block(args.n_colors, n_feats, nn.ReLU(True)))
for _ in range(n_resblocks - 2):
m_body.append(basic_block(n_feats, n_feats, nn.ReLU(True)))
m_body.append(basic_block(n_feats, args.n_colors, None))
self.body = nn.Sequential(*m_body)
def forward(self, x):
x = self.sub_mean(x)
res = self.body(x)
res += x
x = self.add_mean(res)
return x
| 1,275 | 26.148936 | 73 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/DN_RGB/code/model/utils/tools.py | import os
import torch
import numpy as np
from PIL import Image
import torch.nn.functional as F
def normalize(x):
return x.mul_(2).add_(-1)
def same_padding(images, ksizes, strides, rates):
assert len(images.size()) == 4
batch_size, channel, rows, cols = images.size()
out_rows = (rows + strides[0] - 1) // strides[0]
out_cols = (cols + strides[1] - 1) // strides[1]
effective_k_row = (ksizes[0] - 1) * rates[0] + 1
effective_k_col = (ksizes[1] - 1) * rates[1] + 1
padding_rows = max(0, (out_rows-1)*strides[0]+effective_k_row-rows)
padding_cols = max(0, (out_cols-1)*strides[1]+effective_k_col-cols)
# Pad the input
padding_top = int(padding_rows / 2.)
padding_left = int(padding_cols / 2.)
padding_bottom = padding_rows - padding_top
padding_right = padding_cols - padding_left
paddings = (padding_left, padding_right, padding_top, padding_bottom)
images = torch.nn.ZeroPad2d(paddings)(images)
return images
def extract_image_patches(images, ksizes, strides, rates, padding='same'):
"""
Extract patches from images and put them in the C output dimension.
:param padding:
:param images: [batch, channels, in_rows, in_cols]. A 4-D Tensor with shape
:param ksizes: [ksize_rows, ksize_cols]. The size of the sliding window for
each dimension of images
:param strides: [stride_rows, stride_cols]
:param rates: [dilation_rows, dilation_cols]
:return: A Tensor
"""
assert len(images.size()) == 4
assert padding in ['same', 'valid']
batch_size, channel, height, width = images.size()
if padding == 'same':
images = same_padding(images, ksizes, strides, rates)
elif padding == 'valid':
pass
else:
raise NotImplementedError('Unsupported padding type: {}.\
Only "same" or "valid" are supported.'.format(padding))
unfold = torch.nn.Unfold(kernel_size=ksizes,
dilation=rates,
padding=0,
stride=strides)
patches = unfold(images)
return patches # [N, C*k*k, L], L is the total number of such blocks
def reduce_mean(x, axis=None, keepdim=False):
if not axis:
axis = range(len(x.shape))
for i in sorted(axis, reverse=True):
x = torch.mean(x, dim=i, keepdim=keepdim)
return x
def reduce_std(x, axis=None, keepdim=False):
if not axis:
axis = range(len(x.shape))
for i in sorted(axis, reverse=True):
x = torch.std(x, dim=i, keepdim=keepdim)
return x
def reduce_sum(x, axis=None, keepdim=False):
if not axis:
axis = range(len(x.shape))
for i in sorted(axis, reverse=True):
x = torch.sum(x, dim=i, keepdim=keepdim)
return x
| 2,777 | 32.878049 | 79 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/DN_RGB/code/model/utils/__init__.py | 0 | 0 | 0 | py | |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/CAR/code/main.py | import torch
import utility
import data
import model
import loss
from option import args
from trainer import Trainer
torch.manual_seed(args.seed)
checkpoint = utility.checkpoint(args)
def main():
global model
if args.data_test == ['video']:
from videotester import VideoTester
model = model.Model(args,checkpoint)
print('total params: %.2fM' % (sum(p.numel() for p in model.parameters())/1000000.0))
t = VideoTester(args, model, checkpoint)
t.test()
else:
if checkpoint.ok:
loader = data.Data(args)
_model = model.Model(args, checkpoint)
print('total params:%.2fM' % (sum(p.numel() for p in _model.parameters())/1000000.0))
_loss = loss.Loss(args, checkpoint) if not args.test_only else None
t = Trainer(args, loader, _model, _loss, checkpoint)
while not t.terminate():
t.train()
t.test()
checkpoint.done()
if __name__ == '__main__':
main()
| 1,026 | 27.527778 | 97 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/CAR/code/utility.py | import os
import math
import time
import datetime
from multiprocessing import Process
from multiprocessing import Queue
import matplotlib
matplotlib.use('Agg')
import matplotlib.pyplot as plt
import numpy as np
import imageio
import torch
import torch.optim as optim
import torch.optim.lr_scheduler as lrs
class timer():
def __init__(self):
self.acc = 0
self.tic()
def tic(self):
self.t0 = time.time()
def toc(self, restart=False):
diff = time.time() - self.t0
if restart: self.t0 = time.time()
return diff
def hold(self):
self.acc += self.toc()
def release(self):
ret = self.acc
self.acc = 0
return ret
def reset(self):
self.acc = 0
class checkpoint():
def __init__(self, args):
self.args = args
self.ok = True
self.log = torch.Tensor()
now = datetime.datetime.now().strftime('%Y-%m-%d-%H:%M:%S')
if not args.load:
if not args.save:
args.save = now
self.dir = os.path.join('..', 'experiment', args.save)
else:
self.dir = os.path.join('..', 'experiment', args.load)
if os.path.exists(self.dir):
self.log = torch.load(self.get_path('psnr_log.pt'))
print('Continue from epoch {}...'.format(len(self.log)))
else:
args.load = ''
if args.reset:
os.system('rm -rf ' + self.dir)
args.load = ''
os.makedirs(self.dir, exist_ok=True)
os.makedirs(self.get_path('model'), exist_ok=True)
for d in args.data_test:
os.makedirs(self.get_path('results-{}'.format(d)), exist_ok=True)
open_type = 'a' if os.path.exists(self.get_path('log.txt'))else 'w'
self.log_file = open(self.get_path('log.txt'), open_type)
with open(self.get_path('config.txt'), open_type) as f:
f.write(now + '\n\n')
for arg in vars(args):
f.write('{}: {}\n'.format(arg, getattr(args, arg)))
f.write('\n')
self.n_processes = 8
def get_path(self, *subdir):
return os.path.join(self.dir, *subdir)
def save(self, trainer, epoch, is_best=False):
trainer.model.save(self.get_path('model'), epoch, is_best=is_best)
trainer.loss.save(self.dir)
trainer.loss.plot_loss(self.dir, epoch)
self.plot_psnr(epoch)
trainer.optimizer.save(self.dir)
torch.save(self.log, self.get_path('psnr_log.pt'))
def add_log(self, log):
self.log = torch.cat([self.log, log])
def write_log(self, log, refresh=False):
print(log)
self.log_file.write(log + '\n')
if refresh:
self.log_file.close()
self.log_file = open(self.get_path('log.txt'), 'a')
def done(self):
self.log_file.close()
def plot_psnr(self, epoch):
axis = np.linspace(1, epoch, epoch)
for idx_data, d in enumerate(self.args.data_test):
label = 'SR on {}'.format(d)
fig = plt.figure()
plt.title(label)
for idx_scale, scale in enumerate(self.args.scale):
plt.plot(
axis,
self.log[:, idx_data, idx_scale].numpy(),
label='Scale {}'.format(scale)
)
plt.legend()
plt.xlabel('Epochs')
plt.ylabel('PSNR')
plt.grid(True)
plt.savefig(self.get_path('test_{}.pdf'.format(d)))
plt.close(fig)
def begin_background(self):
self.queue = Queue()
def bg_target(queue):
while True:
if not queue.empty():
filename, tensor = queue.get()
if filename is None: break
imageio.imwrite(filename, tensor.numpy())
self.process = [
Process(target=bg_target, args=(self.queue,)) \
for _ in range(self.n_processes)
]
for p in self.process: p.start()
def end_background(self):
for _ in range(self.n_processes): self.queue.put((None, None))
while not self.queue.empty(): time.sleep(1)
for p in self.process: p.join()
def save_results(self, dataset, filename, save_list, scale):
if self.args.save_results:
filename = self.get_path(
'results-{}'.format(dataset.dataset.name),
'{}_x{}_'.format(filename, scale)
)
postfix = ('CAR', 'LQ', 'HQ')
for v, p in zip(save_list, postfix):
normalized = v[0].mul(255 / self.args.rgb_range)
tensor_cpu = normalized.byte().permute(1, 2, 0).cpu()
self.queue.put(('{}{}.png'.format(filename, p), tensor_cpu))
def quantize(img, rgb_range):
pixel_range = 255 / rgb_range
return img.mul(pixel_range).clamp(0, 255).round().div(pixel_range)
def calc_psnr(sr, hr, scale, rgb_range, dataset=None):
if hr.nelement() == 1: return 0
diff = (sr - hr) / rgb_range
if dataset and dataset.dataset.benchmark:
shave = scale
if diff.size(1) > 5:
gray_coeffs = [65.738, 129.057, 25.064]
convert = diff.new_tensor(gray_coeffs).view(1, 3, 1, 1) / 256
diff = diff.mul(convert).sum(dim=1)
else:
shave = scale + 6
valid = diff[..., :, :]
mse = valid.pow(2).mean()
return -10 * math.log10(mse)
def make_optimizer(args, target):
'''
make optimizer and scheduler together
'''
# optimizer
trainable = filter(lambda x: x.requires_grad, target.parameters())
kwargs_optimizer = {'lr': args.lr, 'weight_decay': args.weight_decay}
if args.optimizer == 'SGD':
optimizer_class = optim.SGD
kwargs_optimizer['momentum'] = args.momentum
elif args.optimizer == 'ADAM':
optimizer_class = optim.Adam
kwargs_optimizer['betas'] = args.betas
kwargs_optimizer['eps'] = args.epsilon
elif args.optimizer == 'RMSprop':
optimizer_class = optim.RMSprop
kwargs_optimizer['eps'] = args.epsilon
# scheduler
milestones = list(map(lambda x: int(x), args.decay.split('-')))
kwargs_scheduler = {'milestones': milestones, 'gamma': args.gamma}
scheduler_class = lrs.MultiStepLR
class CustomOptimizer(optimizer_class):
def __init__(self, *args, **kwargs):
super(CustomOptimizer, self).__init__(*args, **kwargs)
def _register_scheduler(self, scheduler_class, **kwargs):
self.scheduler = scheduler_class(self, **kwargs)
def save(self, save_dir):
torch.save(self.state_dict(), self.get_dir(save_dir))
def load(self, load_dir, epoch=1):
self.load_state_dict(torch.load(self.get_dir(load_dir)))
if epoch > 1:
for _ in range(epoch): self.scheduler.step()
def get_dir(self, dir_path):
return os.path.join(dir_path, 'optimizer.pt')
def schedule(self):
self.scheduler.step()
def get_lr(self):
return self.scheduler.get_lr()[0]
def get_last_epoch(self):
return self.scheduler.last_epoch
optimizer = CustomOptimizer(trainable, **kwargs_optimizer)
optimizer._register_scheduler(scheduler_class, **kwargs_scheduler)
return optimizer
| 7,459 | 30.344538 | 77 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/CAR/code/dataloader.py | import threading
import random
import torch
import torch.multiprocessing as multiprocessing
from torch.utils.data import DataLoader
from torch.utils.data import SequentialSampler
from torch.utils.data import RandomSampler
from torch.utils.data import BatchSampler
from torch.utils.data import _utils
from torch.utils.data.dataloader import _DataLoaderIter
from torch.utils.data._utils import collate
from torch.utils.data._utils import signal_handling
from torch.utils.data._utils import MP_STATUS_CHECK_INTERVAL
from torch.utils.data._utils import ExceptionWrapper
from torch.utils.data._utils import IS_WINDOWS
from torch.utils.data._utils.worker import ManagerWatchdog
from torch._six import queue
def _ms_loop(dataset, index_queue, data_queue, done_event, collate_fn, scale, seed, init_fn, worker_id):
try:
collate._use_shared_memory = True
signal_handling._set_worker_signal_handlers()
torch.set_num_threads(1)
random.seed(seed)
torch.manual_seed(seed)
data_queue.cancel_join_thread()
if init_fn is not None:
init_fn(worker_id)
watchdog = ManagerWatchdog()
while watchdog.is_alive():
try:
r = index_queue.get(timeout=MP_STATUS_CHECK_INTERVAL)
except queue.Empty:
continue
if r is None:
assert done_event.is_set()
return
elif done_event.is_set():
continue
idx, batch_indices = r
try:
idx_scale = 0
if len(scale) > 1 and dataset.train:
idx_scale = random.randrange(0, len(scale))
dataset.set_scale(idx_scale)
samples = collate_fn([dataset[i] for i in batch_indices])
samples.append(idx_scale)
except Exception:
data_queue.put((idx, ExceptionWrapper(sys.exc_info())))
else:
data_queue.put((idx, samples))
del samples
except KeyboardInterrupt:
pass
class _MSDataLoaderIter(_DataLoaderIter):
def __init__(self, loader):
self.dataset = loader.dataset
self.scale = loader.scale
self.collate_fn = loader.collate_fn
self.batch_sampler = loader.batch_sampler
self.num_workers = loader.num_workers
self.pin_memory = loader.pin_memory and torch.cuda.is_available()
self.timeout = loader.timeout
self.sample_iter = iter(self.batch_sampler)
base_seed = torch.LongTensor(1).random_().item()
if self.num_workers > 0:
self.worker_init_fn = loader.worker_init_fn
self.worker_queue_idx = 0
self.worker_result_queue = multiprocessing.Queue()
self.batches_outstanding = 0
self.worker_pids_set = False
self.shutdown = False
self.send_idx = 0
self.rcvd_idx = 0
self.reorder_dict = {}
self.done_event = multiprocessing.Event()
base_seed = torch.LongTensor(1).random_()[0]
self.index_queues = []
self.workers = []
for i in range(self.num_workers):
index_queue = multiprocessing.Queue()
index_queue.cancel_join_thread()
w = multiprocessing.Process(
target=_ms_loop,
args=(
self.dataset,
index_queue,
self.worker_result_queue,
self.done_event,
self.collate_fn,
self.scale,
base_seed + i,
self.worker_init_fn,
i
)
)
w.daemon = True
w.start()
self.index_queues.append(index_queue)
self.workers.append(w)
if self.pin_memory:
self.data_queue = queue.Queue()
pin_memory_thread = threading.Thread(
target=_utils.pin_memory._pin_memory_loop,
args=(
self.worker_result_queue,
self.data_queue,
torch.cuda.current_device(),
self.done_event
)
)
pin_memory_thread.daemon = True
pin_memory_thread.start()
self.pin_memory_thread = pin_memory_thread
else:
self.data_queue = self.worker_result_queue
_utils.signal_handling._set_worker_pids(
id(self), tuple(w.pid for w in self.workers)
)
_utils.signal_handling._set_SIGCHLD_handler()
self.worker_pids_set = True
for _ in range(2 * self.num_workers):
self._put_indices()
class MSDataLoader(DataLoader):
def __init__(self, cfg, *args, **kwargs):
super(MSDataLoader, self).__init__(
*args, **kwargs, num_workers=cfg.n_threads
)
self.scale = cfg.scale
def __iter__(self):
return _MSDataLoaderIter(self)
| 5,259 | 32.081761 | 104 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/CAR/code/template.py | def set_template(args):
# Set the templates here
if args.template.find('jpeg') >= 0:
args.data_train = 'DIV2K_jpeg'
args.data_test = 'DIV2K_jpeg'
args.epochs = 200
args.decay = '100'
if args.template.find('EDSR_paper') >= 0:
args.model = 'EDSR'
args.n_resblocks = 32
args.n_feats = 256
args.res_scale = 0.1
if args.template.find('MDSR') >= 0:
args.model = 'MDSR'
args.patch_size = 48
args.epochs = 650
if args.template.find('DDBPN') >= 0:
args.model = 'DDBPN'
args.patch_size = 128
args.scale = '4'
args.data_test = 'Set5'
args.batch_size = 20
args.epochs = 1000
args.decay = '500'
args.gamma = 0.1
args.weight_decay = 1e-4
args.loss = '1*MSE'
if args.template.find('GAN') >= 0:
args.epochs = 200
args.lr = 5e-5
args.decay = '150'
if args.template.find('RCAN') >= 0:
args.model = 'RCAN'
args.n_resgroups = 10
args.n_resblocks = 20
args.n_feats = 64
args.chop = True
if args.template.find('VDSR') >= 0:
args.model = 'VDSR'
args.n_resblocks = 20
args.n_feats = 64
args.patch_size = 41
args.lr = 1e-1
| 1,312 | 23.314815 | 45 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/CAR/code/option.py | import argparse
import template
parser = argparse.ArgumentParser(description='EDSR and MDSR')
parser.add_argument('--debug', action='store_true',
help='Enables debug mode')
parser.add_argument('--template', default='.',
help='You can set various templates in option.py')
# Hardware specifications
parser.add_argument('--n_threads', type=int, default=18,
help='number of threads for data loading')
parser.add_argument('--cpu', action='store_true',
help='use cpu only')
parser.add_argument('--n_GPUs', type=int, default=1,
help='number of GPUs')
parser.add_argument('--seed', type=int, default=1,
help='random seed')
# Data specifications
parser.add_argument('--dir_data', type=str, default='../../../',help='dataset directory')
parser.add_argument('--data_train', type=str, default='DIV2K',
help='train dataset name')
parser.add_argument('--data_test', type=str, default='DIV2K',
help='test dataset name')
parser.add_argument('--data_range', type=str, default='1-800/801-805',
help='train/test data range')
parser.add_argument('--ext', type=str, default='sep',
help='dataset file extension')
parser.add_argument('--scale', type=str, default='4',
help='super resolution scale')
parser.add_argument('--patch_size', type=int, default=192,
help='output patch size')
parser.add_argument('--rgb_range', type=int, default=1,
help='maximum value of RGB')
parser.add_argument('--n_colors', type=int, default=1,
help='number of color channels to use')
parser.add_argument('--chop', action='store_true',
help='enable memory-efficient forward')
parser.add_argument('--no_augment', action='store_true',
help='do not use data augmentation')
# Model specifications
parser.add_argument('--model', default='EDSR',
help='model name')
parser.add_argument('--act', type=str, default='relu',
help='activation function')
parser.add_argument('--pre_train', type=str, default='.',
help='pre-trained model directory')
parser.add_argument('--extend', type=str, default='.',
help='pre-trained model directory')
parser.add_argument('--n_resblocks', type=int, default=16,
help='number of residual blocks')
parser.add_argument('--n_feats', type=int, default=64,
help='number of feature maps')
parser.add_argument('--res_scale', type=float, default=1,
help='residual scaling')
parser.add_argument('--shift_mean', default=True,
help='subtract pixel mean from the input')
parser.add_argument('--dilation', action='store_true',
help='use dilated convolution')
parser.add_argument('--precision', type=str, default='single',
choices=('single', 'half'),
help='FP precision for test (single | half)')
# Option for Residual dense network (RDN)
parser.add_argument('--G0', type=int, default=64,
help='default number of filters. (Use in RDN)')
parser.add_argument('--RDNkSize', type=int, default=3,
help='default kernel size. (Use in RDN)')
parser.add_argument('--RDNconfig', type=str, default='B',
help='parameters config of RDN. (Use in RDN)')
parser.add_argument('--depth', type=int, default=12,
help='number of residual groups')
# Option for Residual channel attention network (RCAN)
parser.add_argument('--n_resgroups', type=int, default=10,
help='number of residual groups')
parser.add_argument('--reduction', type=int, default=16,
help='number of feature maps reduction')
# Training specifications
parser.add_argument('--reset', action='store_true',
help='reset the training')
parser.add_argument('--test_every', type=int, default=1000,
help='do test per every N batches')
parser.add_argument('--epochs', type=int, default=1000,
help='number of epochs to train')
parser.add_argument('--batch_size', type=int, default=16,
help='input batch size for training')
parser.add_argument('--split_batch', type=int, default=1,
help='split the batch into smaller chunks')
parser.add_argument('--self_ensemble', action='store_true',
help='use self-ensemble method for test')
parser.add_argument('--test_only', action='store_true',
help='set this option to test the model')
parser.add_argument('--gan_k', type=int, default=1,
help='k value for adversarial loss')
# Optimization specifications
parser.add_argument('--lr', type=float, default=1e-4,
help='learning rate')
parser.add_argument('--decay', type=str, default='200-400-600-800',
help='learning rate decay type')
parser.add_argument('--gamma', type=float, default=0.5,
help='learning rate decay factor for step decay')
parser.add_argument('--optimizer', default='ADAM',
choices=('SGD', 'ADAM', 'RMSprop'),
help='optimizer to use (SGD | ADAM | RMSprop)')
parser.add_argument('--momentum', type=float, default=0.9,
help='SGD momentum')
parser.add_argument('--betas', type=tuple, default=(0.9, 0.999),
help='ADAM beta')
parser.add_argument('--epsilon', type=float, default=1e-8,
help='ADAM epsilon for numerical stability')
parser.add_argument('--weight_decay', type=float, default=0,
help='weight decay')
parser.add_argument('--gclip', type=float, default=0,
help='gradient clipping threshold (0 = no clipping)')
# Loss specifications
parser.add_argument('--loss', type=str, default='1*L1',
help='loss function configuration')
parser.add_argument('--skip_threshold', type=float, default='1e8',
help='skipping batch that has large error')
# Log specifications
parser.add_argument('--save', type=str, default='test',
help='file name to save')
parser.add_argument('--load', type=str, default='',
help='file name to load')
parser.add_argument('--resume', type=int, default=0,
help='resume from specific checkpoint')
parser.add_argument('--save_models', action='store_true',
help='save all intermediate models')
parser.add_argument('--print_every', type=int, default=100,
help='how many batches to wait before logging training status')
parser.add_argument('--save_results', action='store_true',
help='save output results')
parser.add_argument('--save_gt', action='store_true',
help='save low-resolution and high-resolution images together')
args = parser.parse_args()
template.set_template(args)
args.scale = list(map(lambda x: int(x), args.scale.split('+')))
args.data_train = args.data_train.split('+')
args.data_test = args.data_test.split('+')
if args.epochs == 0:
args.epochs = 1e8
for arg in vars(args):
if vars(args)[arg] == 'True':
vars(args)[arg] = True
elif vars(args)[arg] == 'False':
vars(args)[arg] = False
| 7,467 | 45.385093 | 89 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/CAR/code/__init__.py | 0 | 0 | 0 | py | |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/CAR/code/videotester.py | import os
import math
import utility
from data import common
import torch
import cv2
from tqdm import tqdm
class VideoTester():
def __init__(self, args, my_model, ckp):
self.args = args
self.scale = args.scale
self.ckp = ckp
self.model = my_model
self.filename, _ = os.path.splitext(os.path.basename(args.dir_demo))
def test(self):
torch.set_grad_enabled(False)
self.ckp.write_log('\nEvaluation on video:')
self.model.eval()
timer_test = utility.timer()
for idx_scale, scale in enumerate(self.scale):
vidcap = cv2.VideoCapture(self.args.dir_demo)
total_frames = int(vidcap.get(cv2.CAP_PROP_FRAME_COUNT))
vidwri = cv2.VideoWriter(
self.ckp.get_path('{}_x{}.avi'.format(self.filename, scale)),
cv2.VideoWriter_fourcc(*'XVID'),
vidcap.get(cv2.CAP_PROP_FPS),
(
int(scale * vidcap.get(cv2.CAP_PROP_FRAME_WIDTH)),
int(scale * vidcap.get(cv2.CAP_PROP_FRAME_HEIGHT))
)
)
tqdm_test = tqdm(range(total_frames), ncols=80)
for _ in tqdm_test:
success, lr = vidcap.read()
if not success: break
lr, = common.set_channel(lr, n_channels=self.args.n_colors)
lr, = common.np2Tensor(lr, rgb_range=self.args.rgb_range)
lr, = self.prepare(lr.unsqueeze(0))
sr = self.model(lr, idx_scale)
sr = utility.quantize(sr, self.args.rgb_range).squeeze(0)
normalized = sr * 255 / self.args.rgb_range
ndarr = normalized.byte().permute(1, 2, 0).cpu().numpy()
vidwri.write(ndarr)
vidcap.release()
vidwri.release()
self.ckp.write_log(
'Total: {:.2f}s\n'.format(timer_test.toc()), refresh=True
)
torch.set_grad_enabled(True)
def prepare(self, *args):
device = torch.device('cpu' if self.args.cpu else 'cuda')
def _prepare(tensor):
if self.args.precision == 'half': tensor = tensor.half()
return tensor.to(device)
return [_prepare(a) for a in args]
| 2,280 | 30.246575 | 77 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/CAR/code/trainer.py | import os
import math
from decimal import Decimal
import utility
import torch
import torch.nn.utils as utils
from tqdm import tqdm
class Trainer():
def __init__(self, args, loader, my_model, my_loss, ckp):
self.args = args
self.scale = args.scale
self.ckp = ckp
self.loader_train = loader.loader_train
self.loader_test = loader.loader_test
self.model = my_model
self.loss = my_loss
self.optimizer = utility.make_optimizer(args, self.model)
if self.args.load != '':
self.optimizer.load(ckp.dir, epoch=len(ckp.log))
self.error_last = 1e8
def train(self):
self.loss.step()
epoch = self.optimizer.get_last_epoch() + 1
lr = self.optimizer.get_lr()
self.ckp.write_log(
'[Epoch {}]\tLearning rate: {:.2e}'.format(epoch, Decimal(lr))
)
self.loss.start_log()
self.model.train()
timer_data, timer_model = utility.timer(), utility.timer()
# TEMP
self.loader_train.dataset.set_scale(0)
for batch, (lr, hr, _,) in enumerate(self.loader_train):
lr, hr = self.prepare(lr, hr)
timer_data.hold()
timer_model.tic()
self.optimizer.zero_grad()
sr = self.model(lr, 0)
loss = self.loss(sr, hr)
loss.backward()
if self.args.gclip > 0:
utils.clip_grad_value_(
self.model.parameters(),
self.args.gclip
)
self.optimizer.step()
timer_model.hold()
if (batch + 1) % self.args.print_every == 0:
self.ckp.write_log('[{}/{}]\t{}\t{:.1f}+{:.1f}s'.format(
(batch + 1) * self.args.batch_size,
len(self.loader_train.dataset),
self.loss.display_loss(batch),
timer_model.release(),
timer_data.release()))
timer_data.tic()
self.loss.end_log(len(self.loader_train))
self.error_last = self.loss.log[-1, -1]
self.optimizer.schedule()
def test(self):
torch.set_grad_enabled(False)
epoch = self.optimizer.get_last_epoch()
self.ckp.write_log('\nEvaluation:')
self.ckp.add_log(
torch.zeros(1, len(self.loader_test), len(self.scale))
)
self.model.eval()
timer_test = utility.timer()
if self.args.save_results: self.ckp.begin_background()
for idx_data, d in enumerate(self.loader_test):
for idx_scale, scale in enumerate(self.scale):
d.dataset.set_scale(idx_scale)
for lr, hr, filename in tqdm(d, ncols=80):
lr, hr = self.prepare(lr, hr)
sr = self.model(lr, idx_scale)
sr = utility.quantize(sr, self.args.rgb_range)
save_list = [sr]
self.ckp.log[-1, idx_data, idx_scale] += utility.calc_psnr(
sr, hr, scale, self.args.rgb_range, dataset=d
)
if self.args.save_gt:
save_list.extend([lr, hr])
if self.args.save_results:
self.ckp.save_results(d, filename[0], save_list, scale)
self.ckp.log[-1, idx_data, idx_scale] /= len(d)
best = self.ckp.log.max(0)
self.ckp.write_log(
'[{} x{}]\tPSNR: {:.3f} (Best: {:.3f} @epoch {})'.format(
d.dataset.name,
scale,
self.ckp.log[-1, idx_data, idx_scale],
best[0][idx_data, idx_scale],
best[1][idx_data, idx_scale] + 1
)
)
self.ckp.write_log('Forward: {:.2f}s\n'.format(timer_test.toc()))
self.ckp.write_log('Saving...')
if self.args.save_results:
self.ckp.end_background()
if not self.args.test_only:
self.ckp.save(self, epoch, is_best=(best[1][0, 0] + 1 == epoch))
self.ckp.write_log(
'Total: {:.2f}s\n'.format(timer_test.toc()), refresh=True
)
torch.set_grad_enabled(True)
def prepare(self, *args):
device = torch.device('cpu' if self.args.cpu else 'cuda')
def _prepare(tensor):
if self.args.precision == 'half': tensor = tensor.half()
return tensor.to(device)
return [_prepare(a) for a in args]
def terminate(self):
if self.args.test_only:
self.test()
return True
else:
epoch = self.optimizer.get_last_epoch() + 1
return epoch >= self.args.epochs
| 4,820 | 31.795918 | 79 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/CAR/code/loss/adversarial.py | import utility
from types import SimpleNamespace
from model import common
from loss import discriminator
import torch
import torch.nn as nn
import torch.nn.functional as F
import torch.optim as optim
class Adversarial(nn.Module):
def __init__(self, args, gan_type):
super(Adversarial, self).__init__()
self.gan_type = gan_type
self.gan_k = args.gan_k
self.dis = discriminator.Discriminator(args)
if gan_type == 'WGAN_GP':
# see https://arxiv.org/pdf/1704.00028.pdf pp.4
optim_dict = {
'optimizer': 'ADAM',
'betas': (0, 0.9),
'epsilon': 1e-8,
'lr': 1e-5,
'weight_decay': args.weight_decay,
'decay': args.decay,
'gamma': args.gamma
}
optim_args = SimpleNamespace(**optim_dict)
else:
optim_args = args
self.optimizer = utility.make_optimizer(optim_args, self.dis)
def forward(self, fake, real):
# updating discriminator...
self.loss = 0
fake_detach = fake.detach() # do not backpropagate through G
for _ in range(self.gan_k):
self.optimizer.zero_grad()
# d: B x 1 tensor
d_fake = self.dis(fake_detach)
d_real = self.dis(real)
retain_graph = False
if self.gan_type == 'GAN':
loss_d = self.bce(d_real, d_fake)
elif self.gan_type.find('WGAN') >= 0:
loss_d = (d_fake - d_real).mean()
if self.gan_type.find('GP') >= 0:
epsilon = torch.rand_like(fake).view(-1, 1, 1, 1)
hat = fake_detach.mul(1 - epsilon) + real.mul(epsilon)
hat.requires_grad = True
d_hat = self.dis(hat)
gradients = torch.autograd.grad(
outputs=d_hat.sum(), inputs=hat,
retain_graph=True, create_graph=True, only_inputs=True
)[0]
gradients = gradients.view(gradients.size(0), -1)
gradient_norm = gradients.norm(2, dim=1)
gradient_penalty = 10 * gradient_norm.sub(1).pow(2).mean()
loss_d += gradient_penalty
# from ESRGAN: Enhanced Super-Resolution Generative Adversarial Networks
elif self.gan_type == 'RGAN':
better_real = d_real - d_fake.mean(dim=0, keepdim=True)
better_fake = d_fake - d_real.mean(dim=0, keepdim=True)
loss_d = self.bce(better_real, better_fake)
retain_graph = True
# Discriminator update
self.loss += loss_d.item()
loss_d.backward(retain_graph=retain_graph)
self.optimizer.step()
if self.gan_type == 'WGAN':
for p in self.dis.parameters():
p.data.clamp_(-1, 1)
self.loss /= self.gan_k
# updating generator...
d_fake_bp = self.dis(fake) # for backpropagation, use fake as it is
if self.gan_type == 'GAN':
label_real = torch.ones_like(d_fake_bp)
loss_g = F.binary_cross_entropy_with_logits(d_fake_bp, label_real)
elif self.gan_type.find('WGAN') >= 0:
loss_g = -d_fake_bp.mean()
elif self.gan_type == 'RGAN':
better_real = d_real - d_fake_bp.mean(dim=0, keepdim=True)
better_fake = d_fake_bp - d_real.mean(dim=0, keepdim=True)
loss_g = self.bce(better_fake, better_real)
# Generator loss
return loss_g
def state_dict(self, *args, **kwargs):
state_discriminator = self.dis.state_dict(*args, **kwargs)
state_optimizer = self.optimizer.state_dict()
return dict(**state_discriminator, **state_optimizer)
def bce(self, real, fake):
label_real = torch.ones_like(real)
label_fake = torch.zeros_like(fake)
bce_real = F.binary_cross_entropy_with_logits(real, label_real)
bce_fake = F.binary_cross_entropy_with_logits(fake, label_fake)
bce_loss = bce_real + bce_fake
return bce_loss
# Some references
# https://github.com/kuc2477/pytorch-wgan-gp/blob/master/model.py
# OR
# https://github.com/caogang/wgan-gp/blob/master/gan_cifar10.py
| 4,393 | 37.884956 | 84 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/CAR/code/loss/discriminator.py | from model import common
import torch.nn as nn
class Discriminator(nn.Module):
'''
output is not normalized
'''
def __init__(self, args):
super(Discriminator, self).__init__()
in_channels = args.n_colors
out_channels = 64
depth = 7
def _block(_in_channels, _out_channels, stride=1):
return nn.Sequential(
nn.Conv2d(
_in_channels,
_out_channels,
3,
padding=1,
stride=stride,
bias=False
),
nn.BatchNorm2d(_out_channels),
nn.LeakyReLU(negative_slope=0.2, inplace=True)
)
m_features = [_block(in_channels, out_channels)]
for i in range(depth):
in_channels = out_channels
if i % 2 == 1:
stride = 1
out_channels *= 2
else:
stride = 2
m_features.append(_block(in_channels, out_channels, stride=stride))
patch_size = args.patch_size // (2**((depth + 1) // 2))
m_classifier = [
nn.Linear(out_channels * patch_size**2, 1024),
nn.LeakyReLU(negative_slope=0.2, inplace=True),
nn.Linear(1024, 1)
]
self.features = nn.Sequential(*m_features)
self.classifier = nn.Sequential(*m_classifier)
def forward(self, x):
features = self.features(x)
output = self.classifier(features.view(features.size(0), -1))
return output
| 1,595 | 27.5 | 79 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/CAR/code/loss/vgg.py | from model import common
import torch
import torch.nn as nn
import torch.nn.functional as F
import torchvision.models as models
class VGG(nn.Module):
def __init__(self, conv_index, rgb_range=1):
super(VGG, self).__init__()
vgg_features = models.vgg19(pretrained=True).features
modules = [m for m in vgg_features]
if conv_index.find('22') >= 0:
self.vgg = nn.Sequential(*modules[:8])
elif conv_index.find('54') >= 0:
self.vgg = nn.Sequential(*modules[:35])
vgg_mean = (0.485, 0.456, 0.406)
vgg_std = (0.229 * rgb_range, 0.224 * rgb_range, 0.225 * rgb_range)
self.sub_mean = common.MeanShift(rgb_range, vgg_mean, vgg_std)
for p in self.parameters():
p.requires_grad = False
def forward(self, sr, hr):
def _forward(x):
x = self.sub_mean(x)
x = self.vgg(x)
return x
vgg_sr = _forward(sr)
with torch.no_grad():
vgg_hr = _forward(hr.detach())
loss = F.mse_loss(vgg_sr, vgg_hr)
return loss
| 1,106 | 28.918919 | 75 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/CAR/code/loss/__init__.py | import os
from importlib import import_module
import matplotlib
matplotlib.use('Agg')
import matplotlib.pyplot as plt
import numpy as np
import torch
import torch.nn as nn
import torch.nn.functional as F
class Loss(nn.modules.loss._Loss):
def __init__(self, args, ckp):
super(Loss, self).__init__()
print('Preparing loss function:')
self.n_GPUs = args.n_GPUs
self.loss = []
self.loss_module = nn.ModuleList()
for loss in args.loss.split('+'):
weight, loss_type = loss.split('*')
if loss_type == 'MSE':
loss_function = nn.MSELoss()
elif loss_type == 'L1':
loss_function = nn.L1Loss()
elif loss_type.find('VGG') >= 0:
module = import_module('loss.vgg')
loss_function = getattr(module, 'VGG')(
loss_type[3:],
rgb_range=args.rgb_range
)
elif loss_type.find('GAN') >= 0:
module = import_module('loss.adversarial')
loss_function = getattr(module, 'Adversarial')(
args,
loss_type
)
self.loss.append({
'type': loss_type,
'weight': float(weight),
'function': loss_function}
)
if loss_type.find('GAN') >= 0:
self.loss.append({'type': 'DIS', 'weight': 1, 'function': None})
if len(self.loss) > 1:
self.loss.append({'type': 'Total', 'weight': 0, 'function': None})
for l in self.loss:
if l['function'] is not None:
print('{:.3f} * {}'.format(l['weight'], l['type']))
self.loss_module.append(l['function'])
self.log = torch.Tensor()
device = torch.device('cpu' if args.cpu else 'cuda')
self.loss_module.to(device)
if args.precision == 'half': self.loss_module.half()
if not args.cpu and args.n_GPUs > 1:
self.loss_module = nn.DataParallel(
self.loss_module, range(args.n_GPUs)
)
if args.load != '': self.load(ckp.dir, cpu=args.cpu)
def forward(self, sr, hr):
losses = []
for i, l in enumerate(self.loss):
if l['function'] is not None:
loss = l['function'](sr, hr)
effective_loss = l['weight'] * loss
losses.append(effective_loss)
self.log[-1, i] += effective_loss.item()
elif l['type'] == 'DIS':
self.log[-1, i] += self.loss[i - 1]['function'].loss
loss_sum = sum(losses)
if len(self.loss) > 1:
self.log[-1, -1] += loss_sum.item()
return loss_sum
def step(self):
for l in self.get_loss_module():
if hasattr(l, 'scheduler'):
l.scheduler.step()
def start_log(self):
self.log = torch.cat((self.log, torch.zeros(1, len(self.loss))))
def end_log(self, n_batches):
self.log[-1].div_(n_batches)
def display_loss(self, batch):
n_samples = batch + 1
log = []
for l, c in zip(self.loss, self.log[-1]):
log.append('[{}: {:.4f}]'.format(l['type'], c / n_samples))
return ''.join(log)
def plot_loss(self, apath, epoch):
axis = np.linspace(1, epoch, epoch)
for i, l in enumerate(self.loss):
label = '{} Loss'.format(l['type'])
fig = plt.figure()
plt.title(label)
plt.plot(axis, self.log[:, i].numpy(), label=label)
plt.legend()
plt.xlabel('Epochs')
plt.ylabel('Loss')
plt.grid(True)
plt.savefig(os.path.join(apath, 'loss_{}.pdf'.format(l['type'])))
plt.close(fig)
def get_loss_module(self):
if self.n_GPUs == 1:
return self.loss_module
else:
return self.loss_module.module
def save(self, apath):
torch.save(self.state_dict(), os.path.join(apath, 'loss.pt'))
torch.save(self.log, os.path.join(apath, 'loss_log.pt'))
def load(self, apath, cpu=False):
if cpu:
kwargs = {'map_location': lambda storage, loc: storage}
else:
kwargs = {}
self.load_state_dict(torch.load(
os.path.join(apath, 'loss.pt'),
**kwargs
))
self.log = torch.load(os.path.join(apath, 'loss_log.pt'))
for l in self.get_loss_module():
if hasattr(l, 'scheduler'):
for _ in range(len(self.log)): l.scheduler.step()
| 4,659 | 31.361111 | 80 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/CAR/code/utils/tools.py | import os
import torch
import numpy as np
from PIL import Image
import torch.nn.functional as F
def normalize(x):
return x.mul_(2).add_(-1)
def same_padding(images, ksizes, strides, rates):
assert len(images.size()) == 4
batch_size, channel, rows, cols = images.size()
out_rows = (rows + strides[0] - 1) // strides[0]
out_cols = (cols + strides[1] - 1) // strides[1]
effective_k_row = (ksizes[0] - 1) * rates[0] + 1
effective_k_col = (ksizes[1] - 1) * rates[1] + 1
padding_rows = max(0, (out_rows-1)*strides[0]+effective_k_row-rows)
padding_cols = max(0, (out_cols-1)*strides[1]+effective_k_col-cols)
# Pad the input
padding_top = int(padding_rows / 2.)
padding_left = int(padding_cols / 2.)
padding_bottom = padding_rows - padding_top
padding_right = padding_cols - padding_left
paddings = (padding_left, padding_right, padding_top, padding_bottom)
images = torch.nn.ZeroPad2d(paddings)(images)
return images
def extract_image_patches(images, ksizes, strides, rates, padding='same'):
"""
Extract patches from images and put them in the C output dimension.
:param padding:
:param images: [batch, channels, in_rows, in_cols]. A 4-D Tensor with shape
:param ksizes: [ksize_rows, ksize_cols]. The size of the sliding window for
each dimension of images
:param strides: [stride_rows, stride_cols]
:param rates: [dilation_rows, dilation_cols]
:return: A Tensor
"""
assert len(images.size()) == 4
assert padding in ['same', 'valid']
batch_size, channel, height, width = images.size()
if padding == 'same':
images = same_padding(images, ksizes, strides, rates)
elif padding == 'valid':
pass
else:
raise NotImplementedError('Unsupported padding type: {}.\
Only "same" or "valid" are supported.'.format(padding))
unfold = torch.nn.Unfold(kernel_size=ksizes,
dilation=rates,
padding=0,
stride=strides)
patches = unfold(images)
return patches # [N, C*k*k, L], L is the total number of such blocks
def reduce_mean(x, axis=None, keepdim=False):
if not axis:
axis = range(len(x.shape))
for i in sorted(axis, reverse=True):
x = torch.mean(x, dim=i, keepdim=keepdim)
return x
def reduce_std(x, axis=None, keepdim=False):
if not axis:
axis = range(len(x.shape))
for i in sorted(axis, reverse=True):
x = torch.std(x, dim=i, keepdim=keepdim)
return x
def reduce_sum(x, axis=None, keepdim=False):
if not axis:
axis = range(len(x.shape))
for i in sorted(axis, reverse=True):
x = torch.sum(x, dim=i, keepdim=keepdim)
return x
| 2,777 | 32.878049 | 79 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/CAR/code/utils/__init__.py | 0 | 0 | 0 | py | |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/CAR/code/data/div2kjpeg.py | import os
from data import srdata
from data import div2k
class DIV2KJPEG(div2k.DIV2K):
def __init__(self, args, name='', train=True, benchmark=False):
self.q_factor = int(name.replace('DIV2K-Q', ''))
super(DIV2KJPEG, self).__init__(
args, name=name, train=train, benchmark=benchmark
)
def _set_filesystem(self, dir_data):
self.apath = os.path.join(dir_data, 'DIV2K')
self.dir_hr = os.path.join(self.apath, 'DIV2K_train_HR')
self.dir_lr = os.path.join(
self.apath, 'DIV2K_Q{}'.format(self.q_factor)
)
if self.input_large: self.dir_lr += 'L'
self.ext = ('.png', '.jpg')
| 675 | 31.190476 | 67 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/CAR/code/data/sr291.py | from data import srdata
class SR291(srdata.SRData):
def __init__(self, args, name='SR291', train=True, benchmark=False):
super(SR291, self).__init__(args, name=name)
| 180 | 24.857143 | 72 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/CAR/code/data/benchmark.py | import os
from data import common
from data import srdata
import numpy as np
import torch
import torch.utils.data as data
class Benchmark(srdata.SRData):
def __init__(self, args, name='', train=True, benchmark=True):
super(Benchmark, self).__init__(
args, name=name, train=train, benchmark=True
)
def _set_filesystem(self, dir_data):
self.apath = os.path.join(dir_data, 'benchmark', self.name)
self.dir_hr = os.path.join(self.apath, 'HR')
if self.input_large:
self.dir_lr = os.path.join(self.apath, 'LR_bicubicL')
else:
self.dir_lr = os.path.join(self.apath, 'LR_bicubic')
self.ext = ('','.jpg')
| 702 | 26.038462 | 67 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/CAR/code/data/video.py | import os
from data import common
import cv2
import numpy as np
import imageio
import torch
import torch.utils.data as data
class Video(data.Dataset):
def __init__(self, args, name='Video', train=False, benchmark=False):
self.args = args
self.name = name
self.scale = args.scale
self.idx_scale = 0
self.train = False
self.do_eval = False
self.benchmark = benchmark
self.filename, _ = os.path.splitext(os.path.basename(args.dir_demo))
self.vidcap = cv2.VideoCapture(args.dir_demo)
self.n_frames = 0
self.total_frames = int(self.vidcap.get(cv2.CAP_PROP_FRAME_COUNT))
def __getitem__(self, idx):
success, lr = self.vidcap.read()
if success:
self.n_frames += 1
lr, = common.set_channel(lr, n_channels=self.args.n_colors)
lr_t, = common.np2Tensor(lr, rgb_range=self.args.rgb_range)
return lr_t, -1, '{}_{:0>5}'.format(self.filename, self.n_frames)
else:
vidcap.release()
return None
def __len__(self):
return self.total_frames
def set_scale(self, idx_scale):
self.idx_scale = idx_scale
| 1,207 | 25.844444 | 77 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/CAR/code/data/srdata.py | import os
import glob
import random
import pickle
from data import common
import numpy as np
import imageio
import torch
import torch.utils.data as data
class SRData(data.Dataset):
def __init__(self, args, name='', train=True, benchmark=False):
self.args = args
self.name = name
self.train = train
self.split = 'train' if train else 'test'
self.do_eval = True
self.benchmark = benchmark
self.input_large = (args.model == 'VDSR')
self.scale = args.scale
self.idx_scale = 0
self._set_filesystem(args.dir_data)
if args.ext.find('img') < 0:
path_bin = os.path.join(self.apath, 'bin')
os.makedirs(path_bin, exist_ok=True)
list_hr, list_lr = self._scan()
if args.ext.find('img') >= 0 or benchmark:
self.images_hr, self.images_lr = list_hr, list_lr
elif args.ext.find('sep') >= 0:
os.makedirs(
self.dir_hr.replace(self.apath, path_bin),
exist_ok=True
)
for s in self.scale:
os.makedirs(
os.path.join(
self.dir_lr.replace(self.apath, path_bin),
'X{}'.format(s)
),
exist_ok=True
)
self.images_hr, self.images_lr = [], [[] for _ in self.scale]
for h in list_hr:
b = h.replace(self.apath, path_bin)
b = b.replace(self.ext[0], '.pt')
self.images_hr.append(b)
self._check_and_load(args.ext, h, b, verbose=True)
for i, ll in enumerate(list_lr):
for l in ll:
b = l.replace(self.apath, path_bin)
b = b.replace(self.ext[1], '.pt')
self.images_lr[i].append(b)
self._check_and_load(args.ext, l, b, verbose=True)
if train:
n_patches = args.batch_size * args.test_every
n_images = len(args.data_train) * len(self.images_hr)
if n_images == 0:
self.repeat = 0
else:
self.repeat = max(n_patches // n_images, 1)
# Below functions as used to prepare images
def _scan(self):
names_hr = sorted(
glob.glob(os.path.join(self.dir_hr, '*' + self.ext[0]))
)
names_lr = [[] for _ in self.scale]
for f in names_hr:
filename, _ = os.path.splitext(os.path.basename(f))
for si, s in enumerate(self.scale):
names_lr[si].append(os.path.join(
self.dir_lr, 'X{}/{}{}'.format(
s, filename, self.ext[1]
)
))
return names_hr, names_lr
def _set_filesystem(self, dir_data):
self.apath = os.path.join(dir_data, self.name)
self.dir_hr = os.path.join(self.apath, 'HR')
self.dir_lr = os.path.join(self.apath, 'LR_bicubic')
if self.input_large: self.dir_lr += 'L'
self.ext = ('.png', '.jpg')
def _check_and_load(self, ext, img, f, verbose=True):
if not os.path.isfile(f) or ext.find('reset') >= 0:
if verbose:
print('Making a binary: {}'.format(f))
with open(f, 'wb') as _f:
pickle.dump(imageio.imread(img), _f)
def __getitem__(self, idx):
lr, hr, filename = self._load_file(idx)
pair = self.get_patch(lr, hr)
pair = common.set_channel(*pair, n_channels=self.args.n_colors)
pair_t = common.np2Tensor(*pair, rgb_range=self.args.rgb_range)
return pair_t[0], pair_t[1], filename
def __len__(self):
if self.train:
return len(self.images_hr) * self.repeat
else:
return len(self.images_hr)
def _get_index(self, idx):
if self.train:
return idx % len(self.images_hr)
else:
return idx
def _load_file(self, idx):
idx = self._get_index(idx)
f_hr = self.images_hr[idx]
f_lr = self.images_lr[self.idx_scale][idx]
filename, _ = os.path.splitext(os.path.basename(f_hr))
if self.args.ext == 'img' or self.benchmark:
hr = imageio.imread(f_hr)
lr = imageio.imread(f_lr)
elif self.args.ext.find('sep') >= 0:
with open(f_hr, 'rb') as _f:
hr = pickle.load(_f)
with open(f_lr, 'rb') as _f:
lr = pickle.load(_f)
return lr, hr, filename
def get_patch(self, lr, hr):
scale = self.scale[self.idx_scale]
if self.train:
lr, hr = common.get_patch(
lr, hr,
patch_size=self.args.patch_size,
scale=scale,
multi=(len(self.scale) > 1),
input_large=self.input_large
)
if not self.args.no_augment: lr, hr = common.augment(lr, hr)
else:
ih, iw = lr.shape[:2]
hr = hr[0:ih * scale, 0:iw * scale]
return lr, hr
def set_scale(self, idx_scale):
if not self.input_large:
self.idx_scale = idx_scale
else:
self.idx_scale = random.randint(0, len(self.scale) - 1)
| 5,337 | 32.78481 | 73 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/CAR/code/data/demo.py | import os
from data import common
import numpy as np
import imageio
import torch
import torch.utils.data as data
class Demo(data.Dataset):
def __init__(self, args, name='Demo', train=False, benchmark=False):
self.args = args
self.name = name
self.scale = args.scale
self.idx_scale = 0
self.train = False
self.benchmark = benchmark
self.filelist = []
for f in os.listdir(args.dir_demo):
if f.find('.png') >= 0 or f.find('.jp') >= 0:
self.filelist.append(os.path.join(args.dir_demo, f))
self.filelist.sort()
def __getitem__(self, idx):
filename = os.path.splitext(os.path.basename(self.filelist[idx]))[0]
lr = imageio.imread(self.filelist[idx])
lr, = common.set_channel(lr, n_channels=self.args.n_colors)
lr_t, = common.np2Tensor(lr, rgb_range=self.args.rgb_range)
return lr_t, -1, filename
def __len__(self):
return len(self.filelist)
def set_scale(self, idx_scale):
self.idx_scale = idx_scale
| 1,075 | 25.9 | 76 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/CAR/code/data/common.py | import random
import numpy as np
import skimage.color as sc
import torch
def get_patch(*args, patch_size=96, scale=1, multi=False, input_large=False):
ih, iw = args[0].shape[:2]
print('heelo')
print(args[0].shape)
if not input_large:
p = 1 if multi else 1
tp = p * patch_size
ip = tp // 1
else:
tp = patch_size
ip = patch_size
ix = random.randrange(0, iw - ip + 1)
iy = random.randrange(0, ih - ip + 1)
if not input_large:
tx, ty = 1 * ix, 1 * iy
else:
tx, ty = ix, iy
ret = [
args[0][iy:iy + ip, ix:ix + ip],
*[a[ty:ty + tp, tx:tx + tp] for a in args[1:]]
]
return ret
def set_channel(*args, n_channels=3):
def _set_channel(img):
if img.ndim == 2:
img = np.expand_dims(img, axis=2)
c = img.shape[2]
if n_channels == 1 and c == 3:
img = np.expand_dims(sc.rgb2ycbcr(img)[:, :, 0], 2)
elif n_channels == 3 and c == 1:
img = np.concatenate([img] * n_channels, 2)
return img
return [_set_channel(a) for a in args]
def np2Tensor(*args, rgb_range=255):
def _np2Tensor(img):
np_transpose = np.ascontiguousarray(img.transpose((2, 0, 1)))
tensor = torch.from_numpy(np_transpose).float()
tensor.mul_(rgb_range / 255)
return tensor
return [_np2Tensor(a) for a in args]
def augment(*args, hflip=True, rot=True):
hflip = hflip and random.random() < 0.5
vflip = rot and random.random() < 0.5
rot90 = rot and random.random() < 0.5
def _augment(img):
if hflip: img = img[:, ::-1]
if vflip: img = img[::-1, :]
if rot90: img = img.transpose(1, 0)
return img
return [_augment(a) for a in args]
| 1,799 | 23 | 77 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/CAR/code/data/__init__.py | from importlib import import_module
#from dataloader import MSDataLoader
from torch.utils.data import dataloader
from torch.utils.data import ConcatDataset
# This is a simple wrapper function for ConcatDataset
class MyConcatDataset(ConcatDataset):
def __init__(self, datasets):
super(MyConcatDataset, self).__init__(datasets)
self.train = datasets[0].train
def set_scale(self, idx_scale):
for d in self.datasets:
if hasattr(d, 'set_scale'): d.set_scale(idx_scale)
class Data:
def __init__(self, args):
self.loader_train = None
if not args.test_only:
datasets = []
for d in args.data_train:
module_name = d if d.find('DIV2K-Q') < 0 else 'DIV2KJPEG'
m = import_module('data.' + module_name.lower())
datasets.append(getattr(m, module_name)(args, name=d))
self.loader_train = dataloader.DataLoader(
MyConcatDataset(datasets),
batch_size=args.batch_size,
shuffle=True,
pin_memory=not args.cpu,
num_workers=args.n_threads,
)
self.loader_test = []
for d in args.data_test:
if d in ['CBSD68','classic5','LIVE1','Kodak24','Set5', 'Set14', 'B100', 'Urban100']:
m = import_module('data.benchmark')
testset = getattr(m, 'Benchmark')(args, train=False, name=d)
else:
module_name = d if d.find('DIV2K-Q') < 0 else 'DIV2KJPEG'
m = import_module('data.' + module_name.lower())
testset = getattr(m, module_name)(args, train=False, name=d)
self.loader_test.append(
dataloader.DataLoader(
testset,
batch_size=1,
shuffle=False,
pin_memory=not args.cpu,
num_workers=args.n_threads,
)
)
| 1,987 | 36.509434 | 96 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/CAR/code/data/div2k.py | import os
from data import srdata
class DIV2K(srdata.SRData):
def __init__(self, args, name='DIV2K', train=True, benchmark=False):
data_range = [r.split('-') for r in args.data_range.split('/')]
if train:
data_range = data_range[0]
else:
if args.test_only and len(data_range) == 1:
data_range = data_range[0]
else:
data_range = data_range[1]
self.begin, self.end = list(map(lambda x: int(x), data_range))
super(DIV2K, self).__init__(
args, name=name, train=train, benchmark=benchmark
)
def _scan(self):
names_hr, names_lr = super(DIV2K, self)._scan()
names_hr = names_hr[self.begin - 1:self.end]
names_lr = [n[self.begin - 1:self.end] for n in names_lr]
return names_hr, names_lr
def _set_filesystem(self, dir_data):
super(DIV2K, self)._set_filesystem(dir_data)
self.dir_hr = os.path.join(self.apath, 'DIV2K_train_HR')
self.dir_lr = os.path.join(self.apath, 'DIV2K_train_LR_bicubic')
if self.input_large: self.dir_lr += 'L'
| 1,134 | 33.393939 | 72 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/CAR/code/model/rcan.py | ## ECCV-2018-Image Super-Resolution Using Very Deep Residual Channel Attention Networks
## https://arxiv.org/abs/1807.02758
from model import common
import torch.nn as nn
def make_model(args, parent=False):
return RCAN(args)
## Channel Attention (CA) Layer
class CALayer(nn.Module):
def __init__(self, channel, reduction=16):
super(CALayer, self).__init__()
# global average pooling: feature --> point
self.avg_pool = nn.AdaptiveAvgPool2d(1)
# feature channel downscale and upscale --> channel weight
self.conv_du = nn.Sequential(
nn.Conv2d(channel, channel // reduction, 1, padding=0, bias=True),
nn.ReLU(inplace=True),
nn.Conv2d(channel // reduction, channel, 1, padding=0, bias=True),
nn.Sigmoid()
)
def forward(self, x):
y = self.avg_pool(x)
y = self.conv_du(y)
return x * y
## Residual Channel Attention Block (RCAB)
class RCAB(nn.Module):
def __init__(
self, conv, n_feat, kernel_size, reduction,
bias=True, bn=False, act=nn.ReLU(True), res_scale=1):
super(RCAB, self).__init__()
modules_body = []
for i in range(2):
modules_body.append(conv(n_feat, n_feat, kernel_size, bias=bias))
if bn: modules_body.append(nn.BatchNorm2d(n_feat))
if i == 0: modules_body.append(act)
modules_body.append(CALayer(n_feat, reduction))
self.body = nn.Sequential(*modules_body)
self.res_scale = res_scale
def forward(self, x):
res = self.body(x)
#res = self.body(x).mul(self.res_scale)
res += x
return res
## Residual Group (RG)
class ResidualGroup(nn.Module):
def __init__(self, conv, n_feat, kernel_size, reduction, act, res_scale, n_resblocks):
super(ResidualGroup, self).__init__()
modules_body = []
modules_body = [
RCAB(
conv, n_feat, kernel_size, reduction, bias=True, bn=False, act=nn.ReLU(True), res_scale=1) \
for _ in range(n_resblocks)]
modules_body.append(conv(n_feat, n_feat, kernel_size))
self.body = nn.Sequential(*modules_body)
def forward(self, x):
res = self.body(x)
res += x
return res
## Residual Channel Attention Network (RCAN)
class RCAN(nn.Module):
def __init__(self, args, conv=common.default_conv):
super(RCAN, self).__init__()
n_resgroups = args.n_resgroups
n_resblocks = args.n_resblocks
n_feats = args.n_feats
kernel_size = 3
reduction = args.reduction
scale = args.scale[0]
act = nn.ReLU(True)
# RGB mean for DIV2K
rgb_mean = (0.4488, 0.4371, 0.4040)
rgb_std = (1.0, 1.0, 1.0)
self.sub_mean = common.MeanShift(args.rgb_range, rgb_mean, rgb_std)
# define head module
modules_head = [conv(args.n_colors, n_feats, kernel_size)]
# define body module
modules_body = [
ResidualGroup(
conv, n_feats, kernel_size, reduction, act=act, res_scale=args.res_scale, n_resblocks=n_resblocks) \
for _ in range(n_resgroups)]
modules_body.append(conv(n_feats, n_feats, kernel_size))
# define tail module
modules_tail = [
common.Upsampler(conv, scale, n_feats, act=False),
conv(n_feats, args.n_colors, kernel_size)]
self.add_mean = common.MeanShift(args.rgb_range, rgb_mean, rgb_std, 1)
self.head = nn.Sequential(*modules_head)
self.body = nn.Sequential(*modules_body)
self.tail = nn.Sequential(*modules_tail)
def forward(self, x):
x = self.sub_mean(x)
x = self.head(x)
res = self.body(x)
res += x
x = self.tail(res)
x = self.add_mean(x)
return x
def load_state_dict(self, state_dict, strict=False):
own_state = self.state_dict()
for name, param in state_dict.items():
if name in own_state:
if isinstance(param, nn.Parameter):
param = param.data
try:
own_state[name].copy_(param)
except Exception:
if name.find('tail') >= 0:
print('Replace pre-trained upsampler to new one...')
else:
raise RuntimeError('While copying the parameter named {}, '
'whose dimensions in the model are {} and '
'whose dimensions in the checkpoint are {}.'
.format(name, own_state[name].size(), param.size()))
elif strict:
if name.find('tail') == -1:
raise KeyError('unexpected key "{}" in state_dict'
.format(name))
if strict:
missing = set(own_state.keys()) - set(state_dict.keys())
if len(missing) > 0:
raise KeyError('missing keys in state_dict: "{}"'.format(missing))
| 5,178 | 34.717241 | 116 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/CAR/code/model/ddbpn.py | # Deep Back-Projection Networks For Super-Resolution
# https://arxiv.org/abs/1803.02735
from model import common
import torch
import torch.nn as nn
def make_model(args, parent=False):
return DDBPN(args)
def projection_conv(in_channels, out_channels, scale, up=True):
kernel_size, stride, padding = {
2: (6, 2, 2),
4: (8, 4, 2),
8: (12, 8, 2)
}[scale]
if up:
conv_f = nn.ConvTranspose2d
else:
conv_f = nn.Conv2d
return conv_f(
in_channels, out_channels, kernel_size,
stride=stride, padding=padding
)
class DenseProjection(nn.Module):
def __init__(self, in_channels, nr, scale, up=True, bottleneck=True):
super(DenseProjection, self).__init__()
if bottleneck:
self.bottleneck = nn.Sequential(*[
nn.Conv2d(in_channels, nr, 1),
nn.PReLU(nr)
])
inter_channels = nr
else:
self.bottleneck = None
inter_channels = in_channels
self.conv_1 = nn.Sequential(*[
projection_conv(inter_channels, nr, scale, up),
nn.PReLU(nr)
])
self.conv_2 = nn.Sequential(*[
projection_conv(nr, inter_channels, scale, not up),
nn.PReLU(inter_channels)
])
self.conv_3 = nn.Sequential(*[
projection_conv(inter_channels, nr, scale, up),
nn.PReLU(nr)
])
def forward(self, x):
if self.bottleneck is not None:
x = self.bottleneck(x)
a_0 = self.conv_1(x)
b_0 = self.conv_2(a_0)
e = b_0.sub(x)
a_1 = self.conv_3(e)
out = a_0.add(a_1)
return out
class DDBPN(nn.Module):
def __init__(self, args):
super(DDBPN, self).__init__()
scale = args.scale[0]
n0 = 128
nr = 32
self.depth = 6
rgb_mean = (0.4488, 0.4371, 0.4040)
rgb_std = (1.0, 1.0, 1.0)
self.sub_mean = common.MeanShift(args.rgb_range, rgb_mean, rgb_std)
initial = [
nn.Conv2d(args.n_colors, n0, 3, padding=1),
nn.PReLU(n0),
nn.Conv2d(n0, nr, 1),
nn.PReLU(nr)
]
self.initial = nn.Sequential(*initial)
self.upmodules = nn.ModuleList()
self.downmodules = nn.ModuleList()
channels = nr
for i in range(self.depth):
self.upmodules.append(
DenseProjection(channels, nr, scale, True, i > 1)
)
if i != 0:
channels += nr
channels = nr
for i in range(self.depth - 1):
self.downmodules.append(
DenseProjection(channels, nr, scale, False, i != 0)
)
channels += nr
reconstruction = [
nn.Conv2d(self.depth * nr, args.n_colors, 3, padding=1)
]
self.reconstruction = nn.Sequential(*reconstruction)
self.add_mean = common.MeanShift(args.rgb_range, rgb_mean, rgb_std, 1)
def forward(self, x):
x = self.sub_mean(x)
x = self.initial(x)
h_list = []
l_list = []
for i in range(self.depth - 1):
if i == 0:
l = x
else:
l = torch.cat(l_list, dim=1)
h_list.append(self.upmodules[i](l))
l_list.append(self.downmodules[i](torch.cat(h_list, dim=1)))
h_list.append(self.upmodules[-1](torch.cat(l_list, dim=1)))
out = self.reconstruction(torch.cat(h_list, dim=1))
out = self.add_mean(out)
return out
| 3,629 | 26.5 | 78 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/CAR/code/model/rdn.py | # Residual Dense Network for Image Super-Resolution
# https://arxiv.org/abs/1802.08797
from model import common
import torch
import torch.nn as nn
def make_model(args, parent=False):
return RDN(args)
class RDB_Conv(nn.Module):
def __init__(self, inChannels, growRate, kSize=3):
super(RDB_Conv, self).__init__()
Cin = inChannels
G = growRate
self.conv = nn.Sequential(*[
nn.Conv2d(Cin, G, kSize, padding=(kSize-1)//2, stride=1),
nn.ReLU()
])
def forward(self, x):
out = self.conv(x)
return torch.cat((x, out), 1)
class RDB(nn.Module):
def __init__(self, growRate0, growRate, nConvLayers, kSize=3):
super(RDB, self).__init__()
G0 = growRate0
G = growRate
C = nConvLayers
convs = []
for c in range(C):
convs.append(RDB_Conv(G0 + c*G, G))
self.convs = nn.Sequential(*convs)
# Local Feature Fusion
self.LFF = nn.Conv2d(G0 + C*G, G0, 1, padding=0, stride=1)
def forward(self, x):
return self.LFF(self.convs(x)) + x
class RDN(nn.Module):
def __init__(self, args):
super(RDN, self).__init__()
r = args.scale[0]
G0 = args.G0
kSize = args.RDNkSize
# number of RDB blocks, conv layers, out channels
self.D, C, G = {
'A': (20, 6, 32),
'B': (16, 8, 64),
}[args.RDNconfig]
# Shallow feature extraction net
self.SFENet1 = nn.Conv2d(args.n_colors, G0, kSize, padding=(kSize-1)//2, stride=1)
self.SFENet2 = nn.Conv2d(G0, G0, kSize, padding=(kSize-1)//2, stride=1)
# Redidual dense blocks and dense feature fusion
self.RDBs = nn.ModuleList()
for i in range(self.D):
self.RDBs.append(
RDB(growRate0 = G0, growRate = G, nConvLayers = C)
)
# Global Feature Fusion
self.GFF = nn.Sequential(*[
nn.Conv2d(self.D * G0, G0, 1, padding=0, stride=1),
nn.Conv2d(G0, G0, kSize, padding=(kSize-1)//2, stride=1)
])
# Up-sampling net
if r == 2 or r == 3:
self.UPNet = nn.Sequential(*[
nn.Conv2d(G0, G * r * r, kSize, padding=(kSize-1)//2, stride=1),
nn.PixelShuffle(r),
nn.Conv2d(G, args.n_colors, kSize, padding=(kSize-1)//2, stride=1)
])
elif r == 4:
self.UPNet = nn.Sequential(*[
nn.Conv2d(G0, G * 4, kSize, padding=(kSize-1)//2, stride=1),
nn.PixelShuffle(2),
nn.Conv2d(G, G * 4, kSize, padding=(kSize-1)//2, stride=1),
nn.PixelShuffle(2),
nn.Conv2d(G, args.n_colors, kSize, padding=(kSize-1)//2, stride=1)
])
else:
raise ValueError("scale must be 2 or 3 or 4.")
def forward(self, x):
f__1 = self.SFENet1(x)
x = self.SFENet2(f__1)
RDBs_out = []
for i in range(self.D):
x = self.RDBs[i](x)
RDBs_out.append(x)
x = self.GFF(torch.cat(RDBs_out,1))
x += f__1
return self.UPNet(x)
| 3,202 | 29.216981 | 90 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/CAR/code/model/mdsr.py | from model import common
import torch.nn as nn
def make_model(args, parent=False):
return MDSR(args)
class MDSR(nn.Module):
def __init__(self, args, conv=common.default_conv):
super(MDSR, self).__init__()
n_resblocks = args.n_resblocks
n_feats = args.n_feats
kernel_size = 3
self.scale_idx = 0
act = nn.ReLU(True)
rgb_mean = (0.4488, 0.4371, 0.4040)
rgb_std = (1.0, 1.0, 1.0)
self.sub_mean = common.MeanShift(args.rgb_range, rgb_mean, rgb_std)
m_head = [conv(args.n_colors, n_feats, kernel_size)]
self.pre_process = nn.ModuleList([
nn.Sequential(
common.ResBlock(conv, n_feats, 5, act=act),
common.ResBlock(conv, n_feats, 5, act=act)
) for _ in args.scale
])
m_body = [
common.ResBlock(
conv, n_feats, kernel_size, act=act
) for _ in range(n_resblocks)
]
m_body.append(conv(n_feats, n_feats, kernel_size))
self.upsample = nn.ModuleList([
common.Upsampler(
conv, s, n_feats, act=False
) for s in args.scale
])
m_tail = [conv(n_feats, args.n_colors, kernel_size)]
self.add_mean = common.MeanShift(args.rgb_range, rgb_mean, rgb_std, 1)
self.head = nn.Sequential(*m_head)
self.body = nn.Sequential(*m_body)
self.tail = nn.Sequential(*m_tail)
def forward(self, x):
x = self.sub_mean(x)
x = self.head(x)
x = self.pre_process[self.scale_idx](x)
res = self.body(x)
res += x
x = self.upsample[self.scale_idx](res)
x = self.tail(x)
x = self.add_mean(x)
return x
def set_scale(self, scale_idx):
self.scale_idx = scale_idx
| 1,837 | 25.637681 | 78 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/CAR/code/model/common.py | import math
import torch
import torch.nn as nn
import torch.nn.functional as F
def default_conv(in_channels, out_channels, kernel_size,stride=1, bias=True):
return nn.Conv2d(
in_channels, out_channels, kernel_size,
padding=(kernel_size//2),stride=stride, bias=bias)
class MeanShift(nn.Conv2d):
def __init__(
self, rgb_range,
rgb_mean=(0.4488, 0.4371, 0.4040), rgb_std=(1.0, 1.0, 1.0), sign=-1):
super(MeanShift, self).__init__(3, 3, kernel_size=1)
std = torch.Tensor(rgb_std)
self.weight.data = torch.eye(3).view(3, 3, 1, 1) / std.view(3, 1, 1, 1)
self.bias.data = sign * rgb_range * torch.Tensor(rgb_mean) / std
for p in self.parameters():
p.requires_grad = False
class BasicBlock(nn.Sequential):
def __init__(
self, conv, in_channels, out_channels, kernel_size, stride=1, bias=True,
bn=False, act=nn.PReLU()):
m = [conv(in_channels, out_channels, kernel_size, bias=bias)]
if bn:
m.append(nn.BatchNorm2d(out_channels))
if act is not None:
m.append(act)
super(BasicBlock, self).__init__(*m)
class ResBlock(nn.Module):
def __init__(
self, conv, n_feats, kernel_size,
bias=True, bn=False, act=nn.PReLU(), res_scale=1):
super(ResBlock, self).__init__()
m = []
for i in range(2):
m.append(conv(n_feats, n_feats, kernel_size, bias=bias))
if bn:
m.append(nn.BatchNorm2d(n_feats))
if i == 0:
m.append(act)
self.body = nn.Sequential(*m)
self.res_scale = res_scale
def forward(self, x):
res = self.body(x).mul(self.res_scale)
res += x
return res
class Upsampler(nn.Sequential):
def __init__(self, conv, scale, n_feats, bn=False, act=False, bias=True):
m = []
if (scale & (scale - 1)) == 0: # Is scale = 2^n?
for _ in range(int(math.log(scale, 2))):
m.append(conv(n_feats, 4 * n_feats, 3, bias))
m.append(nn.PixelShuffle(2))
if bn:
m.append(nn.BatchNorm2d(n_feats))
if act == 'relu':
m.append(nn.ReLU(True))
elif act == 'prelu':
m.append(nn.PReLU(n_feats))
elif scale == 3:
m.append(conv(n_feats, 9 * n_feats, 3, bias))
m.append(nn.PixelShuffle(3))
if bn:
m.append(nn.BatchNorm2d(n_feats))
if act == 'relu':
m.append(nn.ReLU(True))
elif act == 'prelu':
m.append(nn.PReLU(n_feats))
else:
raise NotImplementedError
super(Upsampler, self).__init__(*m)
| 2,799 | 30.460674 | 80 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/CAR/code/model/__init__.py | import os
from importlib import import_module
import torch
import torch.nn as nn
from torch.autograd import Variable
class Model(nn.Module):
def __init__(self, args, ckp):
super(Model, self).__init__()
print('Making model...')
self.scale = args.scale
self.idx_scale = 0
self.self_ensemble = args.self_ensemble
self.chop = args.chop
self.precision = args.precision
self.cpu = args.cpu
self.device = torch.device('cpu' if args.cpu else 'cuda')
self.n_GPUs = args.n_GPUs
self.save_models = args.save_models
module = import_module('model.' + args.model.lower())
self.model = module.make_model(args).to(self.device)
if args.precision == 'half': self.model.half()
if not args.cpu and args.n_GPUs > 1:
self.model = nn.DataParallel(self.model, range(args.n_GPUs))
self.load(
ckp.dir,
pre_train=args.pre_train,
resume=args.resume,
cpu=args.cpu
)
print(self.model, file=ckp.log_file)
def forward(self, x, idx_scale):
self.idx_scale = idx_scale
target = self.get_model()
if hasattr(target, 'set_scale'):
target.set_scale(idx_scale)
if self.self_ensemble and not self.training:
if self.chop:
forward_function = self.forward_chop
else:
forward_function = self.model.forward
return self.forward_x8(x, forward_function)
elif self.chop and not self.training:
return self.forward_chop(x)
else:
return self.model(x)
def get_model(self):
if self.n_GPUs == 1:
return self.model
else:
return self.model.module
def state_dict(self, **kwargs):
target = self.get_model()
return target.state_dict(**kwargs)
def save(self, apath, epoch, is_best=False):
target = self.get_model()
torch.save(
target.state_dict(),
os.path.join(apath, 'model_latest.pt')
)
if is_best:
torch.save(
target.state_dict(),
os.path.join(apath, 'model_best.pt')
)
if self.save_models:
torch.save(
target.state_dict(),
os.path.join(apath, 'model_{}.pt'.format(epoch))
)
def load(self, apath, pre_train='.', resume=-1, cpu=False):
if cpu:
kwargs = {'map_location': lambda storage, loc: storage}
else:
kwargs = {}
if resume == -1:
self.get_model().load_state_dict(
torch.load(
os.path.join(apath, 'model_latest.pt'),
**kwargs
),
strict=False
)
elif resume == 0:
if pre_train != '.':
print('Loading model from {}'.format(pre_train))
self.get_model().load_state_dict(
torch.load(pre_train, **kwargs),
strict=False
)
else:
self.get_model().load_state_dict(
torch.load(
os.path.join(apath, 'model', 'model_{}.pt'.format(resume)),
**kwargs
),
strict=False
)
def forward_chop(self, x, shave=10, min_size=6400):
scale = self.scale[self.idx_scale]
scale =1
n_GPUs = min(self.n_GPUs, 4)
b, c, h, w = x.size()
h_half, w_half = h // 2, w // 2
h_size, w_size = h_half + shave, w_half + shave
lr_list = [
x[:, :, 0:h_size, 0:w_size],
x[:, :, 0:h_size, (w - w_size):w],
x[:, :, (h - h_size):h, 0:w_size],
x[:, :, (h - h_size):h, (w - w_size):w]]
if w_size * h_size < min_size:
sr_list = []
for i in range(0, 4, n_GPUs):
lr_batch = torch.cat(lr_list[i:(i + n_GPUs)], dim=0)
sr_batch = self.model(lr_batch)
sr_list.extend(sr_batch.chunk(n_GPUs, dim=0))
else:
sr_list = [
self.forward_chop(patch, shave=shave, min_size=min_size) \
for patch in lr_list
]
h, w = scale * h, scale * w
h_half, w_half = scale * h_half, scale * w_half
h_size, w_size = scale * h_size, scale * w_size
shave *= scale
output = x.new(b, c, h, w)
output[:, :, 0:h_half, 0:w_half] \
= sr_list[0][:, :, 0:h_half, 0:w_half]
output[:, :, 0:h_half, w_half:w] \
= sr_list[1][:, :, 0:h_half, (w_size - w + w_half):w_size]
output[:, :, h_half:h, 0:w_half] \
= sr_list[2][:, :, (h_size - h + h_half):h_size, 0:w_half]
output[:, :, h_half:h, w_half:w] \
= sr_list[3][:, :, (h_size - h + h_half):h_size, (w_size - w + w_half):w_size]
return output
def forward_x8(self, x, forward_function):
def _transform(v, op):
if self.precision != 'single': v = v.float()
v2np = v.data.cpu().numpy()
if op == 'v':
tfnp = v2np[:, :, :, ::-1].copy()
elif op == 'h':
tfnp = v2np[:, :, ::-1, :].copy()
elif op == 't':
tfnp = v2np.transpose((0, 1, 3, 2)).copy()
ret = torch.Tensor(tfnp).to(self.device)
if self.precision == 'half': ret = ret.half()
return ret
lr_list = [x]
for tf in 'v', 'h', 't':
lr_list.extend([_transform(t, tf) for t in lr_list])
sr_list = [forward_function(aug) for aug in lr_list]
for i in range(len(sr_list)):
if i > 3:
sr_list[i] = _transform(sr_list[i], 't')
if i % 4 > 1:
sr_list[i] = _transform(sr_list[i], 'h')
if (i % 4) % 2 == 1:
sr_list[i] = _transform(sr_list[i], 'v')
output_cat = torch.cat(sr_list, dim=0)
output = output_cat.mean(dim=0, keepdim=True)
return output
| 6,199 | 31.460733 | 90 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/CAR/code/model/panet.py | from model import common
from model import attention
import torch.nn as nn
def make_model(args, parent=False):
return PANET(args)
class PANET(nn.Module):
def __init__(self, args, conv=common.default_conv):
super(PANET, self).__init__()
n_resblocks = args.n_resblocks
n_feats = args.n_feats
kernel_size = 3
scale = args.scale[0]
rgb_mean = (0.4488, 0.4371, 0.4040)
rgb_std = (1.0, 1.0, 1.0)
self.sub_mean = common.MeanShift(args.rgb_range, rgb_mean, rgb_std)
msa = attention.PyramidAttention()
# define head module
m_head = [conv(args.n_colors, n_feats, kernel_size)]
# define body module
m_body = [
common.ResBlock(
conv, n_feats, kernel_size, nn.PReLU(), res_scale=args.res_scale
) for _ in range(n_resblocks//2)
]
m_body.append(msa)
for i in range(n_resblocks//2):
m_body.append(common.ResBlock(conv,n_feats,kernel_size,nn.PReLU(),res_scale=args.res_scale))
m_body.append(conv(n_feats, n_feats, kernel_size))
# define tail module
#m_tail = [
# common.Upsampler(conv, scale, n_feats, act=False),
# conv(n_feats, args.n_colors, kernel_size)
#]
m_tail = [
conv(n_feats, args.n_colors, kernel_size)
]
self.add_mean = common.MeanShift(args.rgb_range, rgb_mean, rgb_std, 1)
self.head = nn.Sequential(*m_head)
self.body = nn.Sequential(*m_body)
self.tail = nn.Sequential(*m_tail)
def forward(self, x):
#x = self.sub_mean(x)
x = self.head(x)
res = self.body(x)
res += x
x = self.tail(res)
#x = self.add_mean(x)
return x
def load_state_dict(self, state_dict, strict=True):
own_state = self.state_dict()
for name, param in state_dict.items():
if name in own_state:
if isinstance(param, nn.Parameter):
param = param.data
try:
own_state[name].copy_(param)
except Exception:
if name.find('tail') == -1:
raise RuntimeError('While copying the parameter named {}, '
'whose dimensions in the model are {} and '
'whose dimensions in the checkpoint are {}.'
.format(name, own_state[name].size(), param.size()))
elif strict:
if name.find('tail') == -1:
raise KeyError('unexpected key "{}" in state_dict'
.format(name))
| 2,779 | 32.493976 | 104 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/CAR/code/model/attention.py | import torch
import torch.nn as nn
import torch.nn.functional as F
from torchvision import transforms
from torchvision import utils as vutils
from model import common
from utils.tools import extract_image_patches,\
reduce_mean, reduce_sum, same_padding
class PyramidAttention(nn.Module):
def __init__(self, level=5, res_scale=1, channel=64, reduction=2, ksize=3, stride=1, softmax_scale=10, average=True, conv=common.default_conv):
super(PyramidAttention, self).__init__()
self.ksize = ksize
self.stride = stride
self.res_scale = res_scale
self.softmax_scale = softmax_scale
self.scale = [1-i/10 for i in range(level)]
self.average = average
escape_NaN = torch.FloatTensor([1e-4])
self.register_buffer('escape_NaN', escape_NaN)
self.conv_match_L_base = common.BasicBlock(conv,channel,channel//reduction, 1, bn=False, act=nn.PReLU())
self.conv_match = common.BasicBlock(conv,channel, channel//reduction, 1, bn=False, act=nn.PReLU())
self.conv_assembly = common.BasicBlock(conv,channel, channel,1,bn=False, act=nn.PReLU())
def forward(self, input):
res = input
#theta
match_base = self.conv_match_L_base(input)
shape_base = list(res.size())
input_groups = torch.split(match_base,1,dim=0)
# patch size for matching
kernel = self.ksize
# raw_w is for reconstruction
raw_w = []
# w is for matching
w = []
#build feature pyramid
for i in range(len(self.scale)):
ref = input
if self.scale[i]!=1:
ref = F.interpolate(input, scale_factor=self.scale[i], mode='bicubic')
#feature transformation function f
base = self.conv_assembly(ref)
shape_input = base.shape
#sampling
raw_w_i = extract_image_patches(base, ksizes=[kernel, kernel],
strides=[self.stride,self.stride],
rates=[1, 1],
padding='same') # [N, C*k*k, L]
raw_w_i = raw_w_i.view(shape_input[0], shape_input[1], kernel, kernel, -1)
raw_w_i = raw_w_i.permute(0, 4, 1, 2, 3) # raw_shape: [N, L, C, k, k]
raw_w_i_groups = torch.split(raw_w_i, 1, dim=0)
raw_w.append(raw_w_i_groups)
#feature transformation function g
ref_i = self.conv_match(ref)
shape_ref = ref_i.shape
#sampling
w_i = extract_image_patches(ref_i, ksizes=[self.ksize, self.ksize],
strides=[self.stride, self.stride],
rates=[1, 1],
padding='same')
w_i = w_i.view(shape_ref[0], shape_ref[1], self.ksize, self.ksize, -1)
w_i = w_i.permute(0, 4, 1, 2, 3) # w shape: [N, L, C, k, k]
w_i_groups = torch.split(w_i, 1, dim=0)
w.append(w_i_groups)
y = []
for idx, xi in enumerate(input_groups):
#group in a filter
wi = torch.cat([w[i][idx][0] for i in range(len(self.scale))],dim=0) # [L, C, k, k]
#normalize
max_wi = torch.max(torch.sqrt(reduce_sum(torch.pow(wi, 2),
axis=[1, 2, 3],
keepdim=True)),
self.escape_NaN)
wi_normed = wi/ max_wi
#matching
xi = same_padding(xi, [self.ksize, self.ksize], [1, 1], [1, 1]) # xi: 1*c*H*W
yi = F.conv2d(xi, wi_normed, stride=1) # [1, L, H, W] L = shape_ref[2]*shape_ref[3]
yi = yi.view(1,wi.shape[0], shape_base[2], shape_base[3]) # (B=1, C=32*32, H=32, W=32)
# softmax matching score
yi = F.softmax(yi*self.softmax_scale, dim=1)
if self.average == False:
yi = (yi == yi.max(dim=1,keepdim=True)[0]).float()
# deconv for patch pasting
raw_wi = torch.cat([raw_w[i][idx][0] for i in range(len(self.scale))],dim=0)
yi = F.conv_transpose2d(yi, raw_wi, stride=self.stride,padding=1)/4.
y.append(yi)
y = torch.cat(y, dim=0)+res*self.res_scale # back to the mini-batch
return y | 4,427 | 46.106383 | 147 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/CAR/code/model/vdsr.py | from model import common
import torch.nn as nn
import torch.nn.init as init
url = {
'r20f64': ''
}
def make_model(args, parent=False):
return VDSR(args)
class VDSR(nn.Module):
def __init__(self, args, conv=common.default_conv):
super(VDSR, self).__init__()
n_resblocks = args.n_resblocks
n_feats = args.n_feats
kernel_size = 3
self.url = url['r{}f{}'.format(n_resblocks, n_feats)]
self.sub_mean = common.MeanShift(args.rgb_range)
self.add_mean = common.MeanShift(args.rgb_range, sign=1)
def basic_block(in_channels, out_channels, act):
return common.BasicBlock(
conv, in_channels, out_channels, kernel_size,
bias=True, bn=False, act=act
)
# define body module
m_body = []
m_body.append(basic_block(args.n_colors, n_feats, nn.ReLU(True)))
for _ in range(n_resblocks - 2):
m_body.append(basic_block(n_feats, n_feats, nn.ReLU(True)))
m_body.append(basic_block(n_feats, args.n_colors, None))
self.body = nn.Sequential(*m_body)
def forward(self, x):
x = self.sub_mean(x)
res = self.body(x)
res += x
x = self.add_mean(res)
return x
| 1,275 | 26.148936 | 73 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/CAR/code/model/utils/tools.py | import os
import torch
import numpy as np
from PIL import Image
import torch.nn.functional as F
def normalize(x):
return x.mul_(2).add_(-1)
def same_padding(images, ksizes, strides, rates):
assert len(images.size()) == 4
batch_size, channel, rows, cols = images.size()
out_rows = (rows + strides[0] - 1) // strides[0]
out_cols = (cols + strides[1] - 1) // strides[1]
effective_k_row = (ksizes[0] - 1) * rates[0] + 1
effective_k_col = (ksizes[1] - 1) * rates[1] + 1
padding_rows = max(0, (out_rows-1)*strides[0]+effective_k_row-rows)
padding_cols = max(0, (out_cols-1)*strides[1]+effective_k_col-cols)
# Pad the input
padding_top = int(padding_rows / 2.)
padding_left = int(padding_cols / 2.)
padding_bottom = padding_rows - padding_top
padding_right = padding_cols - padding_left
paddings = (padding_left, padding_right, padding_top, padding_bottom)
images = torch.nn.ZeroPad2d(paddings)(images)
return images
def extract_image_patches(images, ksizes, strides, rates, padding='same'):
"""
Extract patches from images and put them in the C output dimension.
:param padding:
:param images: [batch, channels, in_rows, in_cols]. A 4-D Tensor with shape
:param ksizes: [ksize_rows, ksize_cols]. The size of the sliding window for
each dimension of images
:param strides: [stride_rows, stride_cols]
:param rates: [dilation_rows, dilation_cols]
:return: A Tensor
"""
assert len(images.size()) == 4
assert padding in ['same', 'valid']
batch_size, channel, height, width = images.size()
if padding == 'same':
images = same_padding(images, ksizes, strides, rates)
elif padding == 'valid':
pass
else:
raise NotImplementedError('Unsupported padding type: {}.\
Only "same" or "valid" are supported.'.format(padding))
unfold = torch.nn.Unfold(kernel_size=ksizes,
dilation=rates,
padding=0,
stride=strides)
patches = unfold(images)
return patches # [N, C*k*k, L], L is the total number of such blocks
def reduce_mean(x, axis=None, keepdim=False):
if not axis:
axis = range(len(x.shape))
for i in sorted(axis, reverse=True):
x = torch.mean(x, dim=i, keepdim=keepdim)
return x
def reduce_std(x, axis=None, keepdim=False):
if not axis:
axis = range(len(x.shape))
for i in sorted(axis, reverse=True):
x = torch.std(x, dim=i, keepdim=keepdim)
return x
def reduce_sum(x, axis=None, keepdim=False):
if not axis:
axis = range(len(x.shape))
for i in sorted(axis, reverse=True):
x = torch.sum(x, dim=i, keepdim=keepdim)
return x
| 2,777 | 32.878049 | 79 | py |
Pyramid-Attention-Networks | Pyramid-Attention-Networks-master/CAR/code/model/utils/__init__.py | 0 | 0 | 0 | py | |
time-series-forecasting-release | time-series-forecasting-release/generic_model_trainer.py | import numpy as np
import tensorflow as tf
import argparse
from utility_scripts.persist_optimized_config_results import persist_results
from generic_model_tester import testing
from utility_scripts.hyperparameter_scripts.hyperparameter_config_reader import read_initial_hyperparameter_values
# import the config space and the different types of parameters
from smac.configspace import ConfigurationSpace
from ConfigSpace.hyperparameters import UniformFloatHyperparameter, UniformIntegerHyperparameter
# import SMAC utilities
from smac.scenario.scenario import Scenario
from smac.facade.smac_facade import SMAC
## import the different model architectures
# stacking model
from rnn_architectures.stacking_model.stacking_model_trainer import \
StackingModelTrainer as StackingModelTrainer
# seq2seq model with decoder
from rnn_architectures.seq2seq_model.with_decoder.non_moving_window.unaccumulated_error.seq2seq_model_trainer import \
Seq2SeqModelTrainer as Seq2SeqModelTrainerWithNonMovingWindowUnaccumulatedError
# seq2seq model with dense layer
from rnn_architectures.seq2seq_model.with_dense_layer.non_moving_window.unaccumulated_error.seq2seq_model_trainer import \
Seq2SeqModelTrainerWithDenseLayer as Seq2SeqModelTrainerWithDenseLayerNonMovingWindowUnaccumulatedError
from rnn_architectures.seq2seq_model.with_dense_layer.moving_window.unaccumulated_error.seq2seq_model_trainer import \
Seq2SeqModelTrainerWithDenseLayer as Seq2SeqModelTrainerWithDenseLayerMovingWindow
# import the cocob optimizer
from external_packages import cocob_optimizer
from configs.global_configs import hyperparameter_tuning_configs
from configs.global_configs import model_training_configs
import csv
LSTM_USE_PEEPHOLES = True
BIAS = False
optimized_config_directory = 'results/optimized_configurations/'
learning_rate = 0.0
# function to create the optimizer
def adagrad_optimizer_fn(total_loss):
return tf.train.AdagradOptimizer(learning_rate=learning_rate).minimize(total_loss)
def adam_optimizer_fn(total_loss):
return tf.train.AdamOptimizer(learning_rate=learning_rate).minimize(total_loss)
def cocob_optimizer_fn(total_loss):
return cocob_optimizer.COCOB().minimize(loss=total_loss)
# Training the time series
def train_model_smac(configs):
error, _ = train_model(configs)
return error
# final execution with the optimized config
def train_model(configs):
if "rate_of_learning" in configs.keys():
rate_of_learning = configs["rate_of_learning"]
global learning_rate
learning_rate = rate_of_learning
cell_dimension = configs["cell_dimension"]
num_hidden_layers = configs["num_hidden_layers"]
minibatch_size = configs["minibatch_size"]
max_epoch_size = configs["max_epoch_size"]
max_num_epochs = configs["max_num_epochs"]
l2_regularization = configs["l2_regularization"]
gaussian_noise_stdev = configs["gaussian_noise_stdev"]
random_normal_initializer_stdev = configs["random_normal_initializer_stdev"]
print(configs)
# select the appropriate type of optimizer
error, error_list = model_trainer.train_model(num_hidden_layers=num_hidden_layers,
cell_dimension=cell_dimension,
minibatch_size=minibatch_size,
max_epoch_size=max_epoch_size,
max_num_epochs=max_num_epochs,
l2_regularization=l2_regularization,
gaussian_noise_stdev=gaussian_noise_stdev,
random_normal_initializer_stdev=random_normal_initializer_stdev,
optimizer_fn=optimizer_fn)
print(model_identifier)
return error, error_list
def smac():
# Build Configuration Space which defines all parameters and their ranges
configuration_space = ConfigurationSpace()
rate_of_learning = UniformFloatHyperparameter("rate_of_learning", hyperparameter_values_dic['rate_of_learning'][0],
hyperparameter_values_dic['rate_of_learning'][1],
default_value=hyperparameter_values_dic['rate_of_learning'][0])
cell_dimension = UniformIntegerHyperparameter("cell_dimension",
hyperparameter_values_dic['cell_dimension'][0],
hyperparameter_values_dic['cell_dimension'][1],
default_value=hyperparameter_values_dic['cell_dimension'][
0])
no_hidden_layers = UniformIntegerHyperparameter("num_hidden_layers",
hyperparameter_values_dic['num_hidden_layers'][0],
hyperparameter_values_dic['num_hidden_layers'][1],
default_value=hyperparameter_values_dic['num_hidden_layers'][0])
minibatch_size = UniformIntegerHyperparameter("minibatch_size", hyperparameter_values_dic['minibatch_size'][0],
hyperparameter_values_dic['minibatch_size'][1],
default_value=hyperparameter_values_dic['minibatch_size'][0])
max_epoch_size = UniformIntegerHyperparameter("max_epoch_size", hyperparameter_values_dic['max_epoch_size'][0],
hyperparameter_values_dic['max_epoch_size'][1],
default_value=hyperparameter_values_dic['max_epoch_size'][0])
max_num_of_epochs = UniformIntegerHyperparameter("max_num_epochs", hyperparameter_values_dic['max_num_epochs'][0],
hyperparameter_values_dic['max_num_epochs'][1],
default_value=hyperparameter_values_dic['max_num_epochs'][0])
l2_regularization = UniformFloatHyperparameter("l2_regularization",
hyperparameter_values_dic['l2_regularization'][0],
hyperparameter_values_dic['l2_regularization'][1],
default_value=hyperparameter_values_dic['l2_regularization'][0])
gaussian_noise_stdev = UniformFloatHyperparameter("gaussian_noise_stdev",
hyperparameter_values_dic['gaussian_noise_stdev'][0],
hyperparameter_values_dic['gaussian_noise_stdev'][1],
default_value=hyperparameter_values_dic['gaussian_noise_stdev'][
0])
random_normal_initializer_stdev = UniformFloatHyperparameter("random_normal_initializer_stdev",
hyperparameter_values_dic[
'random_normal_initializer_stdev'][0],
hyperparameter_values_dic[
'random_normal_initializer_stdev'][1],
default_value=hyperparameter_values_dic[
'random_normal_initializer_stdev'][
0])
# add the hyperparameter for learning rate only if the optimization is not cocob
if optimizer == "cocob":
configuration_space.add_hyperparameters(
[cell_dimension, no_hidden_layers, minibatch_size, max_epoch_size, max_num_of_epochs,
l2_regularization, gaussian_noise_stdev, random_normal_initializer_stdev])
else:
configuration_space.add_hyperparameters(
[rate_of_learning, cell_dimension, minibatch_size, max_epoch_size,
max_num_of_epochs, no_hidden_layers,
l2_regularization, gaussian_noise_stdev, random_normal_initializer_stdev])
# creating the scenario object
scenario = Scenario({
"run_obj": "quality",
"runcount-limit": hyperparameter_tuning_configs.SMAC_RUNCOUNT_LIMIT,
"cs": configuration_space,
"deterministic": "true",
"abort_on_first_run_crash": "false"
})
# optimize using an SMAC object
smac = SMAC(scenario=scenario, rng=np.random.RandomState(seed), tae_runner=train_model_smac)
incumbent = smac.optimize()
return incumbent.get_dictionary()
if __name__ == '__main__':
argument_parser = argparse.ArgumentParser("Train different forecasting models")
argument_parser.add_argument('--dataset_name', required=True, help='Unique string for the name of the dataset')
argument_parser.add_argument('--contain_zero_values', required=True,
help='Whether the dataset contains zero values(0/1)')
argument_parser.add_argument('--address_near_zero_instability', required=False,
help='Whether to use a custom SMAPE function to address near zero instability(0/1). Default is 0')
argument_parser.add_argument('--integer_conversion', required=False,
help='Whether to convert the final forecasts to integers(0/1). Default is 0')
argument_parser.add_argument('--initial_hyperparameter_values_file', required=True,
help='The file for the initial hyperparameter configurations')
argument_parser.add_argument('--binary_train_file_train_mode', required=True,
help='The tfrecords file for train dataset in the training mode')
argument_parser.add_argument('--binary_valid_file_train_mode', required=True,
help='The tfrecords file for validation dataset in the training mode')
argument_parser.add_argument('--binary_train_file_test_mode', required=True,
help='The tfrecords file for train dataset in the testing mode')
argument_parser.add_argument('--binary_test_file_test_mode', required=True,
help='The tfrecords file for test dataset in the testing mode')
argument_parser.add_argument('--txt_test_file', required=True, help='The txt file for test dataset')
argument_parser.add_argument('--actual_results_file', required=True, help='The txt file of the actual results')
argument_parser.add_argument('--original_data_file', required=True, help='The txt file of the original dataset')
argument_parser.add_argument('--cell_type', required=False,
help='The cell type of the RNN(LSTM/GRU/RNN). Default is LSTM')
argument_parser.add_argument('--input_size', required=False,
help='The input size of the moving window. Default is 0')
argument_parser.add_argument('--seasonality_period', required=True, help='The seasonality period of the time series')
argument_parser.add_argument('--forecast_horizon', required=True, help='The forecast horizon of the dataset')
argument_parser.add_argument('--optimizer', required=True, help='The type of the optimizer(cocob/adam/adagrad...)')
argument_parser.add_argument('--hyperparameter_tuning', required=True,
help='The method for hyperparameter tuning(bayesian/smac)')
argument_parser.add_argument('--model_type', required=True,
help='The type of the model(stacking/seq2seq/seq2seqwithdenselayer)')
argument_parser.add_argument('--input_format', required=True, help='Input format(moving_window/non_moving_window)')
argument_parser.add_argument('--without_stl_decomposition', required=False,
help='Whether not to use stl decomposition(0/1). Default is 0')
argument_parser.add_argument('--with_truncated_backpropagation', required=False,
help='Whether not to use truncated backpropagation(0/1). Default is 0')
argument_parser.add_argument('--with_accumulated_error', required=False,
help='Whether to accumulate errors over the moving windows. Default is 0')
argument_parser.add_argument('--seed', required=True, help='Integer seed to use as the random seed')
# parse the user arguments
args = argument_parser.parse_args()
dataset_name = args.dataset_name
initial_hyperparameter_values_file = args.initial_hyperparameter_values_file
binary_train_file_path_train_mode = args.binary_train_file_train_mode
binary_validation_file_path_train_mode = args.binary_valid_file_train_mode
contain_zero_values = int(args.contain_zero_values)
if args.input_size:
input_size = int(args.input_size)
else:
input_size = 0
output_size = int(args.forecast_horizon)
optimizer = args.optimizer
hyperparameter_tuning = args.hyperparameter_tuning
model_type = args.model_type
input_format = args.input_format
seed = int(args.seed)
if args.without_stl_decomposition:
without_stl_decomposition = bool(int(args.without_stl_decomposition))
else:
without_stl_decomposition = False
if args.with_truncated_backpropagation:
with_truncated_backpropagation = bool(int(args.with_truncated_backpropagation))
else:
with_truncated_backpropagation = False
if args.cell_type:
cell_type = args.cell_type
else:
cell_type = "LSTM"
if args.with_accumulated_error:
with_accumulated_error = bool(int(args.with_accumulated_error))
else:
with_accumulated_error = False
if args.address_near_zero_instability:
address_near_zero_instability = bool(int(args.address_near_zero_instability))
else:
address_near_zero_instability = False
if args.integer_conversion:
integer_conversion = bool(int(args.integer_conversion))
else:
integer_conversion = False
if with_truncated_backpropagation:
tbptt_identifier = "with_truncated_backpropagation"
else:
tbptt_identifier = "without_truncated_backpropagation"
if without_stl_decomposition:
stl_decomposition_identifier = "without_stl_decomposition"
else:
stl_decomposition_identifier = "with_stl_decomposition"
if with_accumulated_error:
accumulated_error_identifier = "with_accumulated_error"
else:
accumulated_error_identifier = "without_accumulated_error"
model_identifier = dataset_name + "_" + model_type + "_" + cell_type + "cell" + "_" + input_format + "_" + stl_decomposition_identifier + "_" + hyperparameter_tuning + "_" + optimizer + "_" + tbptt_identifier + "_" + accumulated_error_identifier + "_" + str(
seed)
print("Model Training Started for {}".format(model_identifier))
# select the optimizer
if optimizer == "cocob":
optimizer_fn = cocob_optimizer_fn
elif optimizer == "adagrad":
optimizer_fn = adagrad_optimizer_fn
elif optimizer == "adam":
optimizer_fn = adam_optimizer_fn
# define the key word arguments for the different model types
model_kwargs = {
'use_bias': BIAS,
'use_peepholes': LSTM_USE_PEEPHOLES,
'input_size': input_size,
'output_size': output_size,
'binary_train_file_path': binary_train_file_path_train_mode,
'binary_validation_file_path': binary_validation_file_path_train_mode,
'contain_zero_values': contain_zero_values,
'address_near_zero_instability': address_near_zero_instability,
'integer_conversion': integer_conversion,
'seed': seed,
'cell_type': cell_type,
'without_stl_decomposition': without_stl_decomposition
}
# select the model type
if model_type == "stacking":
model_trainer = StackingModelTrainer(**model_kwargs)
elif model_type == "seq2seq":
model_trainer = Seq2SeqModelTrainerWithNonMovingWindowUnaccumulatedError(**model_kwargs)
elif model_type == "seq2seqwithdenselayer":
if input_format == "non_moving_window":
model_trainer = Seq2SeqModelTrainerWithDenseLayerNonMovingWindowUnaccumulatedError(**model_kwargs)
elif input_format == "moving_window":
model_trainer = Seq2SeqModelTrainerWithDenseLayerMovingWindow(**model_kwargs)
# read the initial hyperparamter configurations from the file
hyperparameter_values_dic = read_initial_hyperparameter_values(initial_hyperparameter_values_file)
optimized_configuration = smac()
# persist the optimized configuration to a file
persist_results(optimized_configuration, optimized_config_directory + '/' + model_identifier + '.txt')
# get the validation errors for the best hyperparameter configs
smape_error, smape_error_list = train_model(optimized_configuration)
# write the final list of validation errors to a file
validation_errors_file = model_training_configs.VALIDATION_ERRORS_DIRECTORY + model_identifier + ".csv"
with open(validation_errors_file, "w") as output:
writer = csv.writer(output, lineterminator='\n')
writer.writerow(smape_error_list)
print("Optimized configuration: {}".format(optimized_configuration))
print("Optimized Value: {}\n".format(smape_error))
# test the model
for i in range(1, 11):
args.seed = i
testing(args, optimized_configuration) | 17,829 | 51.908012 | 262 | py |
time-series-forecasting-release | time-series-forecasting-release/generic_model_tester.py | import csv
import tensorflow as tf
# import the different model types
# stacking model
from rnn_architectures.stacking_model.stacking_model_tester import \
StackingModelTester as StackingModelTester
# seq2seq model with decoder
from rnn_architectures.seq2seq_model.with_decoder.non_moving_window.unaccumulated_error.seq2seq_model_tester import \
Seq2SeqModelTester as Seq2SeqModelTesterWithNonMovingWindowUnaccumulatedError
# seq2seq model with dense layer
from rnn_architectures.seq2seq_model.with_dense_layer.non_moving_window.unaccumulated_error.seq2seq_model_tester import \
Seq2SeqModelTesterWithDenseLayer as Seq2SeqModelTesterWithDenseLayerNonMovingWindowUnaccumulatedError
from rnn_architectures.seq2seq_model.with_dense_layer.moving_window.unaccumulated_error.seq2seq_model_tester import \
Seq2SeqModelTesterWithDenseLayer as Seq2SeqModelTesterWithDenseLayerMovingWindow
# import the cocob optimizer
from external_packages import cocob_optimizer
from utility_scripts.invoke_r_final_evaluation import invoke_r_script
from configs.global_configs import model_testing_configs
LSTM_USE_PEEPHOLES = True
BIAS = False
learning_rate = 0.0
# function to create the optimizer
def adagrad_optimizer_fn(total_loss):
return tf.train.AdagradOptimizer(learning_rate=learning_rate).minimize(total_loss)
def adam_optimizer_fn(total_loss):
return tf.train.AdamOptimizer(learning_rate=learning_rate).minimize(total_loss)
def cocob_optimizer_fn(total_loss):
return cocob_optimizer.COCOB().minimize(loss=total_loss)
def testing(args, config_dictionary):
# to make the random number choices reproducible
global learning_rate
dataset_name = args.dataset_name
contain_zero_values = int(args.contain_zero_values)
binary_train_file_path_test_mode = args.binary_train_file_test_mode
binary_test_file_path_test_mode = args.binary_test_file_test_mode
txt_test_file_path = args.txt_test_file
actual_results_file_path = args.actual_results_file
original_data_file_path = args.original_data_file
if (args.input_size):
input_size = int(args.input_size)
else:
input_size = 0
output_size = int(args.forecast_horizon)
seasonality_period = int(args.seasonality_period)
optimizer = args.optimizer
hyperparameter_tuning = args.hyperparameter_tuning
model_type = args.model_type
input_format = args.input_format
seed = int(args.seed)
if args.without_stl_decomposition:
without_stl_decomposition = bool(int(args.without_stl_decomposition))
else:
without_stl_decomposition = False
if args.with_truncated_backpropagation:
with_truncated_backpropagation = bool(int(args.with_truncated_backpropagation))
else:
with_truncated_backpropagation = False
if args.cell_type:
cell_type = args.cell_type
else:
cell_type = "LSTM"
if args.with_accumulated_error:
with_accumulated_error = bool(int(args.with_accumulated_error))
else:
with_accumulated_error = False
if args.address_near_zero_instability:
address_near_zero_instability = bool(int(args.address_near_zero_instability))
else:
address_near_zero_instability = False
if args.integer_conversion:
integer_conversion = bool(int(args.integer_conversion))
else:
integer_conversion = False
if not with_truncated_backpropagation:
tbptt_identifier = "without_truncated_backpropagation"
else:
tbptt_identifier = "with_truncated_backpropagation"
if not without_stl_decomposition:
stl_decomposition_identifier = "with_stl_decomposition"
else:
stl_decomposition_identifier = "without_stl_decomposition"
if with_accumulated_error:
accumulated_error_identifier = "with_accumulated_error"
else:
accumulated_error_identifier = "without_accumulated_error"
model_identifier = dataset_name + "_" + model_type + "_" + cell_type + "cell" + "_" + input_format + "_" + stl_decomposition_identifier + "_" + hyperparameter_tuning + "_" + optimizer + "_" + tbptt_identifier + "_" + accumulated_error_identifier + "_" + str(
seed)
print("Model Testing Started for {}".format(model_identifier))
print(config_dictionary)
# select the optimizer
if optimizer == "cocob":
optimizer_fn = cocob_optimizer_fn
elif optimizer == "adagrad":
optimizer_fn = adagrad_optimizer_fn
elif optimizer == "adam":
optimizer_fn = adam_optimizer_fn
# define the key word arguments for the different model types
model_kwargs = {
'use_bias': BIAS,
'use_peepholes': LSTM_USE_PEEPHOLES,
'input_size': input_size,
'output_size': output_size,
'binary_train_file_path': binary_train_file_path_test_mode,
'binary_test_file_path': binary_test_file_path_test_mode,
'seed': seed,
'cell_type': cell_type,
'without_stl_decomposition': without_stl_decomposition
}
# select the model type
if model_type == "stacking":
model_tester = StackingModelTester(**model_kwargs)
elif model_type == "seq2seq":
model_tester = Seq2SeqModelTesterWithNonMovingWindowUnaccumulatedError(**model_kwargs)
elif model_type == "seq2seqwithdenselayer":
if input_format == "non_moving_window":
model_tester = Seq2SeqModelTesterWithDenseLayerNonMovingWindowUnaccumulatedError(**model_kwargs)
elif input_format == "moving_window":
model_tester = Seq2SeqModelTesterWithDenseLayerMovingWindow(**model_kwargs)
if 'rate_of_learning' in config_dictionary:
learning_rate = config_dictionary['rate_of_learning']
num_hidden_layers = config_dictionary['num_hidden_layers']
max_num_epochs = config_dictionary['max_num_epochs']
max_epoch_size = config_dictionary['max_epoch_size']
cell_dimension = config_dictionary['cell_dimension']
l2_regularization = config_dictionary['l2_regularization']
minibatch_size = config_dictionary['minibatch_size']
gaussian_noise_stdev = config_dictionary['gaussian_noise_stdev']
random_normal_initializer_stdev = config_dictionary['random_normal_initializer_stdev']
list_of_forecasts = model_tester.test_model(num_hidden_layers=int(round(num_hidden_layers)),
cell_dimension=int(round(cell_dimension)),
minibatch_size=int(round(minibatch_size)),
max_epoch_size=int(round(max_epoch_size)),
max_num_epochs=int(round(max_num_epochs)),
l2_regularization=l2_regularization,
gaussian_noise_stdev=gaussian_noise_stdev,
random_normal_initializer_stdev=random_normal_initializer_stdev,
optimizer_fn=optimizer_fn)
# write the forecasting results to a file
rnn_forecasts_file_path = model_testing_configs.RNN_FORECASTS_DIRECTORY + model_identifier + '.txt'
with open(rnn_forecasts_file_path, "w") as output:
writer = csv.writer(output, lineterminator='\n')
writer.writerows(list_of_forecasts)
# invoke the final evaluation R script
error_file_name = model_identifier + '.txt'
if input_format == "moving_window":
invoke_r_script((rnn_forecasts_file_path, error_file_name, txt_test_file_path,
actual_results_file_path, original_data_file_path, str(input_size), str(output_size),
str(contain_zero_values), str(int(address_near_zero_instability)),
str(int(integer_conversion)), str(int(seasonality_period)), str(int(without_stl_decomposition))), True)
else:
invoke_r_script((rnn_forecasts_file_path, error_file_name, txt_test_file_path,
actual_results_file_path, original_data_file_path, str(output_size), str(contain_zero_values), str(int(address_near_zero_instability)), str(int(integer_conversion)), str(int(seasonality_period)), str(int(without_stl_decomposition))), False)
| 8,308 | 41.829897 | 269 | py |
time-series-forecasting-release | time-series-forecasting-release/external_packages/cocob_optimizer/cocob_optimizer.py | # Copyright 2017 Francesco Orabona. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ==============================================================================
'''
COntinuos COin Betting (COCOB) optimizer
'''
from tensorflow.python.framework import ops
from tensorflow.python.ops import state_ops
from tensorflow.python.ops import control_flow_ops
from tensorflow.python.framework import constant_op
from tensorflow.python.training.optimizer import Optimizer
import tensorflow as tf
class COCOB(Optimizer):
def __init__(self, alpha=100, use_locking=False, name='COCOB'):
'''
constructs a new COCOB optimizer
'''
super(COCOB, self).__init__(use_locking, name)
self._alpha = alpha
def _create_slots(self, var_list):
for v in var_list:
with ops.colocate_with(v):
gradients_sum = constant_op.constant(0,
shape=v.get_shape(),
dtype=v.dtype.base_dtype)
grad_norm_sum = constant_op.constant(0,
shape=v.get_shape(),
dtype=v.dtype.base_dtype)
L = constant_op.constant(1e-8, shape=v.get_shape(), dtype=v.dtype.base_dtype)
tilde_w = constant_op.constant(0.0, shape=v.get_shape(), dtype=v.dtype.base_dtype)
reward = constant_op.constant(0.0, shape=v.get_shape(), dtype=v.dtype.base_dtype)
self._get_or_make_slot(v, L, "L", self._name)
self._get_or_make_slot(v, grad_norm_sum, "grad_norm_sum", self._name)
self._get_or_make_slot(v, gradients_sum, "gradients_sum", self._name)
self._get_or_make_slot(v, tilde_w, "tilde_w", self._name)
self._get_or_make_slot(v, reward, "reward", self._name)
def _apply_dense(self, grad, var):
gradients_sum = self.get_slot(var, "gradients_sum")
grad_norm_sum = self.get_slot(var, "grad_norm_sum")
tilde_w = self.get_slot(var, "tilde_w")
L = self.get_slot(var, "L")
reward = self.get_slot(var, "reward")
L_update = tf.maximum(L,tf.abs(grad))
gradients_sum_update = gradients_sum + grad
grad_norm_sum_update = grad_norm_sum + tf.abs(grad)
reward_update = tf.maximum(reward-grad*tilde_w,0)
new_w = -gradients_sum_update/(L_update*(tf.maximum(grad_norm_sum_update+L_update,self._alpha*L_update)))*(reward_update+L_update)
var_update = var-tilde_w+new_w
tilde_w_update=new_w
gradients_sum_update_op = state_ops.assign(gradients_sum, gradients_sum_update)
grad_norm_sum_update_op = state_ops.assign(grad_norm_sum, grad_norm_sum_update)
var_update_op = state_ops.assign(var, var_update)
tilde_w_update_op = state_ops.assign(tilde_w, tilde_w_update)
L_update_op = state_ops.assign(L, L_update)
reward_update_op = state_ops.assign(reward, reward_update)
return control_flow_ops.group(*[gradients_sum_update_op,
var_update_op,
grad_norm_sum_update_op,
tilde_w_update_op,
reward_update_op,
L_update_op])
def _apply_sparse(self, grad, var):
return self._apply_dense(grad, var)
def _resource_apply_dense(self, grad, handle):
return self._apply_dense(grad, handle)
| 4,063 | 43.659341 | 138 | py |
time-series-forecasting-release | time-series-forecasting-release/external_packages/cocob_optimizer/__init__.py | from cocob_optimizer import * | 29 | 29 | 29 | py |
time-series-forecasting-release | time-series-forecasting-release/preprocess_scripts/CIF_2016/moving_window/create_o12_tfrecords.py | from tfrecords_handler.moving_window.tfrecord_writer import TFRecordWriter
import os
output_path = "../../../datasets/binary_data/CIF_2016/moving_window/"
if not os.path.exists(output_path):
os.makedirs(output_path)
if __name__ == '__main__':
tfrecord_writer = TFRecordWriter(
input_size = 15,
output_size = 12,
train_file_path = '../../../datasets/text_data/CIF_2016/moving_window/stl_12i15.txt',
validate_file_path = '../../../datasets/text_data/CIF_2016/moving_window/stl_12i15v.txt',
test_file_path = '../../../datasets/text_data/CIF_2016/moving_window/cif12test.txt',
binary_train_file_path = output_path + 'stl_12i15.tfrecords',
binary_validation_file_path = output_path + 'stl_12i15v.tfrecords',
binary_test_file_path = output_path + 'cif12test.tfrecords'
)
tfrecord_writer.read_text_data()
tfrecord_writer.write_train_data_to_tfrecord_file()
tfrecord_writer.write_validation_data_to_tfrecord_file()
tfrecord_writer.write_test_data_to_tfrecord_file() | 1,052 | 44.782609 | 97 | py |
time-series-forecasting-release | time-series-forecasting-release/preprocess_scripts/CIF_2016/moving_window/create_o6_tfrecords.py | from tfrecords_handler.moving_window.tfrecord_writer import TFRecordWriter
import os
output_path = "../../../datasets/binary_data/CIF_2016/moving_window/"
if not os.path.exists(output_path):
os.makedirs(output_path)
if __name__ == '__main__':
tfrecord_writer = TFRecordWriter(
input_size = 7,
output_size = 6,
train_file_path = '../../../datasets/text_data/CIF_2016/moving_window/stl_6i7.txt',
validate_file_path = '../../../datasets/text_data/CIF_2016/moving_window/stl_6i7v.txt',
test_file_path = '../../../datasets/text_data/CIF_2016/moving_window/cif6test.txt',
binary_train_file_path = output_path + 'stl_6i7.tfrecords',
binary_validation_file_path = output_path + 'stl_6i7v.tfrecords',
binary_test_file_path = output_path + 'cif6test.tfrecords'
)
tfrecord_writer.read_text_data()
tfrecord_writer.write_train_data_to_tfrecord_file()
tfrecord_writer.write_validation_data_to_tfrecord_file()
tfrecord_writer.write_test_data_to_tfrecord_file() | 1,040 | 44.26087 | 95 | py |
time-series-forecasting-release | time-series-forecasting-release/preprocess_scripts/CIF_2016/moving_window/without_stl_decomposition/create_o12_tfrecords.py | from tfrecords_handler.moving_window.tfrecord_writer import TFRecordWriter
import os
output_path = "../../../../datasets/binary_data/CIF_2016/moving_window/without_stl_decomposition/"
if not os.path.exists(output_path):
os.makedirs(output_path)
if __name__ == '__main__':
tfrecord_writer = TFRecordWriter(
input_size = 15,
output_size = 12,
train_file_path = '../../../../datasets/text_data/CIF_2016/moving_window/without_stl_decomposition/cif_12i15.txt',
validate_file_path = '../../../../datasets/text_data/CIF_2016/moving_window/without_stl_decomposition/cif_12i15v.txt',
test_file_path = '../../../../datasets/text_data/CIF_2016/moving_window/without_stl_decomposition/cif12test.txt',
binary_train_file_path = output_path + 'cif_12i15.tfrecords',
binary_validation_file_path = output_path + 'cif_12i15v.tfrecords',
binary_test_file_path = output_path + 'cif12test.tfrecords'
)
tfrecord_writer.read_text_data()
tfrecord_writer.write_train_data_to_tfrecord_file()
tfrecord_writer.write_validation_data_to_tfrecord_file()
tfrecord_writer.write_test_data_to_tfrecord_file() | 1,172 | 50 | 126 | py |
time-series-forecasting-release | time-series-forecasting-release/preprocess_scripts/CIF_2016/moving_window/without_stl_decomposition/create_o6_tfrecords.py | from tfrecords_handler.moving_window.tfrecord_writer import TFRecordWriter
import os
output_path = "../../../../datasets/binary_data/CIF_2016/moving_window/without_stl_decomposition/"
if not os.path.exists(output_path):
os.makedirs(output_path)
if __name__ == '__main__':
tfrecord_writer = TFRecordWriter(
input_size = 7,
output_size = 6,
train_file_path = '../../../../datasets/text_data/CIF_2016/moving_window/without_stl_decomposition/cif_6i7.txt',
validate_file_path = '../../../../datasets/text_data/CIF_2016/moving_window/without_stl_decomposition/cif_6i7v.txt',
test_file_path = '../../../../datasets/text_data/CIF_2016/moving_window/without_stl_decomposition/cif6test.txt',
binary_train_file_path = output_path + 'cif_6i7.tfrecords',
binary_validation_file_path = output_path + 'cif_6i7v.tfrecords',
binary_test_file_path = output_path + 'cif6test.tfrecords'
)
tfrecord_writer.read_text_data()
tfrecord_writer.write_train_data_to_tfrecord_file()
tfrecord_writer.write_validation_data_to_tfrecord_file()
tfrecord_writer.write_test_data_to_tfrecord_file() | 1,156 | 49.304348 | 124 | py |
time-series-forecasting-release | time-series-forecasting-release/preprocess_scripts/CIF_2016/non_moving_window/create_o12_tfrecords.py | from tfrecords_handler.non_moving_window.tfrecord_writer import TFRecordWriter
import os
output_path = "../../../datasets/binary_data/CIF_2016/non_moving_window/"
if not os.path.exists(output_path):
os.makedirs(output_path)
if __name__ == '__main__':
tfrecord_writer = TFRecordWriter(
output_size = 12,
train_file_path='../../../datasets/text_data/CIF_2016/non_moving_window/cif_stl_12.txt',
validate_file_path='../../../datasets/text_data/CIF_2016/non_moving_window/cif_stl_12v.txt',
test_file_path='../../../datasets/text_data/CIF_2016/non_moving_window/cif_test_12.txt',
binary_train_file_path=output_path + 'cif_stl_12.tfrecords',
binary_validation_file_path=output_path + 'cif_stl_12v.tfrecords',
binary_test_file_path=output_path + 'cif_test_12.tfrecords',
without_stl_decomposition=False
)
tfrecord_writer.read_text_data()
tfrecord_writer.write_train_data_to_tfrecord_file()
tfrecord_writer.write_validation_data_to_tfrecord_file()
tfrecord_writer.write_test_data_to_tfrecord_file() | 1,084 | 46.173913 | 100 | py |
time-series-forecasting-release | time-series-forecasting-release/preprocess_scripts/CIF_2016/non_moving_window/create_o6_tfrecords.py | from tfrecords_handler.non_moving_window.tfrecord_writer import TFRecordWriter
import os
output_path = "../../../datasets/binary_data/CIF_2016/non_moving_window/"
if not os.path.exists(output_path):
os.makedirs(output_path)
if __name__ == '__main__':
tfrecord_writer = TFRecordWriter(
output_size = 6,
train_file_path = '../../../datasets/text_data/CIF_2016/non_moving_window/cif_stl_6.txt',
validate_file_path = '../../../datasets/text_data/CIF_2016/non_moving_window/cif_stl_6v.txt',
test_file_path = '../../../datasets/text_data/CIF_2016/non_moving_window/cif_test_6.txt',
binary_train_file_path = output_path + 'cif_stl_6.tfrecords',
binary_validation_file_path = output_path + 'cif_stl_6v.tfrecords',
binary_test_file_path = output_path + 'cif_test_6.tfrecords',
)
tfrecord_writer.read_text_data()
tfrecord_writer.write_train_data_to_tfrecord_file()
tfrecord_writer.write_validation_data_to_tfrecord_file()
tfrecord_writer.write_test_data_to_tfrecord_file() | 1,049 | 46.727273 | 101 | py |
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