Zero-Shot Object Detection
Keras
PyTorch
JAX
TensorFlow
zeromodels
owlvit
open-vocabulary
object-detection
Instructions to use zeromodels/owlvit-base-patch32 with libraries, inference providers, notebooks, and local apps. Follow these links to get started.
- Libraries
- Keras
How to use zeromodels/owlvit-base-patch32 with Keras:
# Available backend options are: "jax", "torch", "tensorflow". import os os.environ["KERAS_BACKEND"] = "jax" import keras model = keras.saving.load_model("hf://zeromodels/owlvit-base-patch32") - Notebooks
- Google Colab
- Kaggle
Migrate to zeromodels (rename kf_*.json -> zm_*.json, fix refs in config + README, ensure tag + badge)
Browse files- README.md +22 -22
- kf_config.json → zm_config.json +28 -28
- kf_preprocessor.json → zm_preprocessor.json +26 -26
README.md
CHANGED
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@@ -2,10 +2,10 @@
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pipeline_tag: zero-shot-object-detection
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license: apache-2.0
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base_model: google/owlvit-base-patch32
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library_name:
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tags:
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- keras
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-
-
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- owlvit
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- open-vocabulary
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- zero-shot-object-detection
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- tf
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---
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## ***See [our collection](https://huggingface.co/collections/
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# Run OWL-ViT with Keras 3: JAX, PyTorch, or TensorFlow
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[](https://arxiv.org/abs/2205.06230) · [HF Papers](https://huggingface.co/papers/2205.06230)
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For more details on the model, please go to Google's original [model card](https://huggingface.co/google/owlvit-base-patch32).
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-
Pure-**Keras 3** conversion of [`google/owlvit-base-patch32`](https://huggingface.co/google/owlvit-base-patch32) for [
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This is an **open-vocabulary object detection** checkpoint (`OwlViTDetect`): pass free-text prompts at inference time.
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os.environ["KERAS_BACKEND"] = "torch" # or "jax" / "tensorflow"
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from PIL import Image
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-
from
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OwlViTDetect,
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OwlViTProcessor,
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OwlViTImageProcessor,
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)
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model = OwlViTDetect.from_weights("
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processor = OwlViTProcessor.from_weights("
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image_processor = OwlViTImageProcessor.from_weights("
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image = Image.open("your_image.jpg").convert("RGB")
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prompts = ["a photo of a mug", "a photo of a knife"]
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@@ -72,27 +72,27 @@ for score, name, box in zip(
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print(f"{name}: {float(score):.3f} {box}")
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```
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Load any OWL-ViT / OWLv2 variant the same way with `from_weights("
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| Variant | Hub | Family |
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|---|---|---|
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| `owlvit-base-patch32` | [`
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| `owlvit-base-patch16` | [`
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| `owlvit-large-patch14` | [`
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| `owlv2-base-patch16` | [`
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| `owlv2-base-patch16-ensemble` | [`
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| `owlv2-base-patch16-finetuned` | [`
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| `owlv2-large-patch14` | [`
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| `owlv2-large-patch14-ensemble` | [`
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| `owlv2-large-patch14-finetuned` | [`
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## Tips
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- Set `KERAS_BACKEND` **before** importing Keras /
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- Prefer `Processor.from_weights(...)` so image size matches the variant.
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- Open-vocab thresholds are often much lower than closed-set detectors (try `0.1`).
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- OWLv2 pads to square before resize; pass the original `(height, width)` as `target_sizes` carefully (see the OWLv2 docs for the padding trap).
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-
- See [OWL-ViT docs](https://imvision12.github.io/
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- Community / upstream safetensors still work via the `hf:` prefix, e.g. `OwlViTDetect.from_weights("hf:google/owlvit-base-patch32")`.
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## Special Thanks
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pipeline_tag: zero-shot-object-detection
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license: apache-2.0
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base_model: google/owlvit-base-patch32
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+
library_name: zeromodels
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tags:
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- keras
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- zeromodels
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- owlvit
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- open-vocabulary
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- zero-shot-object-detection
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- tf
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---
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## ***See [our collection](https://huggingface.co/collections/zeromodels/owl-vit-6a6a7af2bb61206cd50397ff) for all versions of OWL-ViT.***
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# Run OWL-ViT with Keras 3: JAX, PyTorch, or TensorFlow
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+
[](https://github.com/IMvision12/ZeroModels) [](https://imvision12.github.io/ZeroModels/owlvit/) [](https://huggingface.co/collections/zeromodels/owl-vit-6a6a7af2bb61206cd50397ff)
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# zeromodels/owlvit-base-patch32
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Paper: [Simple Open-Vocabulary Object Detection with Vision Transformers (arXiv:2205.06230)](https://arxiv.org/abs/2205.06230) · [HF Papers](https://huggingface.co/papers/2205.06230)
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For more details on the model, please go to Google's original [model card](https://huggingface.co/google/owlvit-base-patch32).
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+
Pure-**Keras 3** conversion of [`google/owlvit-base-patch32`](https://huggingface.co/google/owlvit-base-patch32) for [zeromodels](https://github.com/IMvision12/ZeroModels). One implementation runs unmodified on **TensorFlow / Torch / JAX**.
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This is an **open-vocabulary object detection** checkpoint (`OwlViTDetect`): pass free-text prompts at inference time.
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os.environ["KERAS_BACKEND"] = "torch" # or "jax" / "tensorflow"
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from PIL import Image
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+
from zeromodels.models.owlvit import (
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OwlViTDetect,
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OwlViTProcessor,
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OwlViTImageProcessor,
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)
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+
model = OwlViTDetect.from_weights("zeromodels/owlvit-base-patch32")
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processor = OwlViTProcessor.from_weights("zeromodels/owlvit-base-patch32")
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image_processor = OwlViTImageProcessor.from_weights("zeromodels/owlvit-base-patch32")
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image = Image.open("your_image.jpg").convert("RGB")
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prompts = ["a photo of a mug", "a photo of a knife"]
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print(f"{name}: {float(score):.3f} {box}")
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```
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Load any OWL-ViT / OWLv2 variant the same way with `from_weights("zeromodels/<variant>")` (use `OwlViTDetect` for this repo):
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| Variant | Hub | Family |
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|---|---|---|
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| `owlvit-base-patch32` | [`zeromodels/owlvit-base-patch32`](https://huggingface.co/zeromodels/owlvit-base-patch32) | OWL-ViT |
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| `owlvit-base-patch16` | [`zeromodels/owlvit-base-patch16`](https://huggingface.co/zeromodels/owlvit-base-patch16) | OWL-ViT |
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+
| `owlvit-large-patch14` | [`zeromodels/owlvit-large-patch14`](https://huggingface.co/zeromodels/owlvit-large-patch14) | OWL-ViT |
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| `owlv2-base-patch16` | [`zeromodels/owlv2-base-patch16`](https://huggingface.co/zeromodels/owlv2-base-patch16) | OWLv2 |
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| `owlv2-base-patch16-ensemble` | [`zeromodels/owlv2-base-patch16-ensemble`](https://huggingface.co/zeromodels/owlv2-base-patch16-ensemble) | OWLv2 |
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+
| `owlv2-base-patch16-finetuned` | [`zeromodels/owlv2-base-patch16-finetuned`](https://huggingface.co/zeromodels/owlv2-base-patch16-finetuned) | OWLv2 |
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+
| `owlv2-large-patch14` | [`zeromodels/owlv2-large-patch14`](https://huggingface.co/zeromodels/owlv2-large-patch14) | OWLv2 |
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+
| `owlv2-large-patch14-ensemble` | [`zeromodels/owlv2-large-patch14-ensemble`](https://huggingface.co/zeromodels/owlv2-large-patch14-ensemble) | OWLv2 |
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+
| `owlv2-large-patch14-finetuned` | [`zeromodels/owlv2-large-patch14-finetuned`](https://huggingface.co/zeromodels/owlv2-large-patch14-finetuned) | OWLv2 |
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## Tips
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+
- Set `KERAS_BACKEND` **before** importing Keras / zeromodels.
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- Prefer `Processor.from_weights(...)` so image size matches the variant.
|
| 93 |
- Open-vocab thresholds are often much lower than closed-set detectors (try `0.1`).
|
| 94 |
- OWLv2 pads to square before resize; pass the original `(height, width)` as `target_sizes` carefully (see the OWLv2 docs for the padding trap).
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+
- See [OWL-ViT docs](https://imvision12.github.io/ZeroModels/owlvit/) and [Loading Weights](https://imvision12.github.io/ZeroModels/loading_weights/).
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- Community / upstream safetensors still work via the `hf:` prefix, e.g. `OwlViTDetect.from_weights("hf:google/owlvit-base-patch32")`.
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## Special Thanks
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kf_config.json → zm_config.json
RENAMED
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{
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"library_name": "
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"
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"model_module": "
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"model_class": "OwlViTDetect",
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"variant": "owlvit-base-patch32",
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"weights": "model.weights.h5",
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"schema_version": 2,
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"weight_dtype": "float32",
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"model_type": "owlvit",
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"text_config": {
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"hidden_dim": 512,
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"intermediate_size": 2048,
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"num_heads": 8,
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"num_layers": 12,
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"max_position_embeddings": 16,
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"vocab_size": 49408
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},
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"vision_config": {
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"image_size": 768,
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"patch_size": 32,
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"hidden_dim": 768,
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"intermediate_size": 3072,
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"num_layers": 12,
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"num_heads": 12
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},
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"projection_dim": 512,
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"image_size": null
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}
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{
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"library_name": "zeromodels",
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"zeromodels_version": "1.2.1",
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"model_module": "zeromodels.models.owlvit",
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"model_class": "OwlViTDetect",
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"variant": "owlvit-base-patch32",
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"weights": "model.weights.h5",
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"schema_version": 2,
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"weight_dtype": "float32",
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"model_type": "owlvit",
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"text_config": {
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"hidden_dim": 512,
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+
"intermediate_size": 2048,
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+
"num_heads": 8,
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+
"num_layers": 12,
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+
"max_position_embeddings": 16,
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+
"vocab_size": 49408
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},
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"vision_config": {
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"image_size": 768,
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"patch_size": 32,
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+
"hidden_dim": 768,
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+
"intermediate_size": 3072,
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+
"num_layers": 12,
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+
"num_heads": 12
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},
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"projection_dim": 512,
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"image_size": null
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}
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kf_preprocessor.json → zm_preprocessor.json
RENAMED
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-
{
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"library_name": "
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"
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"preprocessor_module": "
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"preprocessor_class": "OwlViTImageProcessor",
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"variant": "owlvit-base-patch32",
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"size": {
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"height": 768,
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"width": 768
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},
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"resample": "bicubic",
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-
"do_rescale": true,
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-
"rescale_factor": 0.00392156862745098,
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-
"do_normalize": true,
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-
"image_mean": [
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-
0.48145466,
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-
0.4578275,
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-
0.40821073
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],
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"image_std": [
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-
0.26862954,
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-
0.26130258,
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-
0.27577711
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],
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"return_tensor": true,
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-
"data_format": null
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}
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+
{
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"library_name": "zeromodels",
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"zeromodels_version": "1.1.3",
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"preprocessor_module": "zeromodels.models.owlvit",
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"preprocessor_class": "OwlViTImageProcessor",
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"variant": "owlvit-base-patch32",
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"size": {
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"height": 768,
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"width": 768
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},
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"resample": "bicubic",
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+
"do_rescale": true,
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+
"rescale_factor": 0.00392156862745098,
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+
"do_normalize": true,
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+
"image_mean": [
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+
0.48145466,
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+
0.4578275,
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+
0.40821073
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],
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+
"image_std": [
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+
0.26862954,
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+
0.26130258,
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+
0.27577711
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+
],
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+
"return_tensor": true,
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+
"data_format": null
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}
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