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188
Mobile-phone screen surface anomaly detection (3 defect types; segmentation GT). Category B, task T-B1, in the unified Smart-Manufacturing SFT schema.
The repository name is an internal task code. See Provenance below for the underlying dataset.
Records
1,220 records (test=1200 · train=20). Pixel masks are embedded as a mask image column.
Unified SFT schema
| field | type | meaning |
|---|---|---|
query |
str | the question / instruction (model input) |
image |
Image | the input image (bytes embedded) |
annot |
str | the answer — for this dataset: plain-text {label, defect_type} — {good, null} or {anomalous, <defect>} (one of oil/scratch/stain). The palette-mode segmentation mask is deferred localization GT, with seg info (mask_path, defect_area_fraction) in metadata — see Task, mask & split below |
reasoning |
null | no native CoT in these datasets |
cate |
"B" | SFT category |
task |
"T-xx" | unified task id |
metadata |
str (JSON) | split, provenance, image_path, image_sha256 (dedup key) |
mask |
Image | null | (T-B1/T-B2 only) the pixel ground-truth mask, bytes embedded |
masks |
list[Image] | (D21 only) multi-region masks |
Task, mask & split
What this is. MSD (Mobile-phone Screen surface Defect; jianzhang96/MSD) — MVTec-style unsupervised anomaly detection & segmentation of phone-screen surfaces (1920×1080, industrial camera). This repo uses the MSD-US package: 20 defect-free training images + 1,200 defective test images across 3 defect types (oil, scratch, stain; 400 each), each with a pixel-level segmentation mask. (The README describes a "PASCAL VOC" packaging; the MSD-US package we use ships no VOC XML — it is AD/segmentation with masks.)
Query & answer (this repo's SFT task). query is our own instruction template (the dataset ships no
question); it names the closed set of 3 defect types and asks for the label + type. annot = plain-text
{good, null} or {anomalous, <defect>} (one of oil/scratch/stain), the type taken from the source folder.
Mask (deferred localization GT). Each defective image ships a palette-mode segmentation mask (matched
1:1 by image stem under test/ground_truth/), with mask_path + defect_area_fraction in metadata;
defect-free images have mask=null. A text-output model cannot emit a pixel mask, so localization is deferred.
Split. train = 20 defect-free images; test = 1,200 defective (oil/scratch/stain, 400 each). This is
the unsupervised protocol — all defect-free images are used for training, so test is defect-only.
Provenance
Underlying dataset: MSD. Upstream license: GPL-3.0 (this card is license: other; respect the upstream terms). Converted read-only from the raw source into the unified schema; conversion script: 188/convert_d88.py, published with publish/push_to_hf.py, both in AI4Manufacturing/forge_model.
Overlap / de-duplication (§8)
None notable. Each record carries metadata.image_sha256 so overlapping images can be kept entirely on one side of a train/eval split.
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