D15 / README.md
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D15: DefectSpectrum -> T-B2 (unified SFT; viewer-friendly row groups)
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---
tags:
- smart-manufacturing
- sft
- industrial
- vision
license: other
pretty_name: D15
extra_gated_fields:
Name: text
Affiliation: text
Intended use: text
extra_gated_prompt: >-
This dataset is released for **research use**. Access is reviewed and granted
**manually** by the maintainers. Please state your name, affiliation, and intended use.
---
# D15
Multi-label defect detection & classification (semantic mask GT deferred). Category **B**, task **T-B2**, in the unified Smart-Manufacturing SFT schema.
> The repository name is an internal task code. See **Provenance** below for the underlying dataset.
## Records
**2,711** records (train=2711). 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_types]}``{good, null}` or `{anomalous, [type1, type2, ...]}`, the defect classes present (multi-label), derived from the semantic mask's class indices via the per-category legend. The class-indexed semantic `mask` is localization ground truth for a separate, deferred task; the legend is in `metadata.defect_legend` — 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.** Defect Spectrum (EnVision-Research, ECCV 2024, arXiv:2310.17316) — fine-grained, multi-class
semantic **re-annotation** of 4 defect datasets (DS-MVTec, DS-VISION, DS-DAGM, DS-Cotton-Fabric). One image can
contain **several** defect types; a class-indexed semantic mask marks each, and a per-category legend maps a mask
index to a defect name.
**Query & answer (this repo's SFT task).** `query` is our own instruction template (the raw dataset ships no
natural-language question). It names the source/category, lists that category's possible defect classes, and asks
the model to decide **good vs defective** and, if defective, **list all defect types present** — answering in the
form `{label, [defect_types]}` (multi-label), exactly what `annot` holds (`{good, null}` /
`{anomalous, [type1, type2, ...]}`). The defect types are **derived from the semantic mask + the legend**, so
DS-VISION / DS-DAGM (which have no per-defect folders) get real types too. **The query does not ask for a mask.**
**Mask & legend (deferred localization ground truth).** The `mask` column is the class-indexed semantic
segmentation mask (pixel value = defect-class index; `0` = background); normal images have `mask`=null. The
per-category legend (index -> defect name) is in `metadata.defect_legend`, and the derived classes in
`metadata.defect_types`. A text-output model cannot emit a pixel mask, so localization is deferred (mask kept as GT).
**Defect classes.** The legend (`defects_dict` from each source's `DS-*.md`) defines **98 per-category defect
classes** (58 distinct names): DS-MVTec 15 categories / 71, DS-VISION 6 / 20, DS-DAGM 1 / 5, DS-Cotton-Fabric 1 / 2.
**Split & notes.** No upstream train/val split -> single `train`. Re-annotates MVTec/VISION/DAGM/Cotton (keep on
one side of any split vs the raw sets). `synthetic_*` (generated augmentation) is excluded, and the paper's
per-sample captions are not included here. A few images are labeled anomalous but have an all-zero mask (source
contradiction) -> `{anomalous, []}`.
## Provenance
Underlying dataset: **DefectSpectrum**. Upstream license: **MIT (upstream MVTec/VISION/DAGM/Cotton)** (this card is `license: other`; respect the upstream terms). Converted read-only from the raw source into the unified schema; conversion script: `D15/convert_d15.py`, published with `publish/push_to_hf.py`, both in [`AI4Manufacturing/forge_model`](https://github.com/AI4Manufacturing/forge_model).
## Overlap / de-duplication (§8)
Re-annotates MVTec/VISION/DAGM/Cotton; keep on one side of a split vs the raw sets. Each record carries `metadata.image_sha256` so overlapping images can be kept entirely on one side of a train/eval split.