D25 / README.md
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D25: VisA -> T-B1 (unified SFT; viewer-friendly row groups)
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---
tags:
- smart-manufacturing
- sft
- industrial
- vision
license: other
pretty_name: D25
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.
---
# D25
Visual anomaly detection & localization (1-class protocol). 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
**10,821** records (test=2162 · train=8659). 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: the plain-text image-level label `good` or `anomalous` (VisA is binary — no fine-grained defect types). Pixel-level localization is a separate task whose target is the `mask` column — 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
This dataset supports two levels of the anomaly task:
- **Image-level detection**`query` asks only whether the pictured object is **good** or
**anomalous**, and `annot` is the plain-text answer `good` or `anomalous`.
- **Pixel-level localization / segmentation** — for every **anomalous** image the `mask` column carries
the ground-truth defect mask: a **binary image** (pixel `1` = defect, `0` = background) at the input
resolution. **Normal** images have no defect and therefore **no mask** (`null`). A model addressing the
localization task is expected to output a binary mask image of the same height×width (`1` = defect
pixel, `0` = background); this repo ships that mask as the localization target.
**Split — one-class (`1cls`) protocol.** `train` = **normal images only** (no anomalies, no masks);
`test` = **normal + anomalous** images, with a mask on each anomalous image (see the exact counts under
**Records**). This is the standard unsupervised one-class anomaly-detection protocol; VisA's supervised
`2cls` and few-shot protocols (the same images under a different train/test split) are **not** included here.
## Provenance
Underlying dataset: **VisA**. Upstream license: **CC BY 4.0** (this card is `license: other`; respect the upstream terms). Converted read-only from the raw source into the unified schema; conversion script: `D25/convert_d25.py`, published with `publish/push_to_hf.py`, both in [`AI4Manufacturing/forge_model`](https://github.com/AI4Manufacturing/forge_model).
## Overlap / de-duplication (§8)
Subset of MMAD's image pool. Each record carries `metadata.image_sha256` so overlapping images can be kept entirely on one side of a train/eval split.