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188-grounding
Detection-format defect localization on mobile phone screen — 1219 items (20 good + 1199 defective),
derived deterministically from the binary segmentation masks of AI4Manufacturing/188.
The model outputs boxes as text; defect-free images must output [] — detection rejection is
part of the task.
Task
"Locate every defect." annot is a JSON list of {"type": ..., "bbox_xywh": [x, y, w, h]} in the
image's pixel coordinates (origin top-left; see metadata.image_wh), one entry per defect instance
(connected components after proximity grouping; sub-15-px groups denoised), sorted (type, x, y); the
type is one of oil, scratch, stain. Good images have annot = [] (20). 754 defective images are
multi-instance (≥2 boxes).
Verified: every box list re-derived independently from the mask at build — byte-identical on all
1219 rows; goods all []; every box within image bounds.
| field | meaning |
|---|---|
query |
task prompt + JSON output spec (closed class list) |
image |
the mobile phone screen photo (no overlays) |
annot |
JSON box list, [] when defect-free |
reasoning |
null — deterministic |
cate / task |
B / T-B2 |
metadata |
source, image_sha256, image_path, image_wh, r188_record_id, defect_type, n_instances |
Provenance
Built deterministically (no LLM/teacher; reasoning is null) from AI4Manufacturing/188
— MSD mobile-phone-screen inspection — 1,220 photos, 3 defect types (oil, scratch, stain) + good; each anomalous image has a paired binary pixel segmentation mask (binarized from the palette mask at index>0 (the source encodes defect TYPE in the palette index, so LOCATION comes from the mask and TYPE from metadata)).
Generator: annotate/188/build_188_derived.py in forge_model; machine gates
annotate/188/verify_188.py (all green at build: boxes/gold re-derived byte-identical, clean
regions contain zero defect pixels, mcq gold = the true panel, no leaked-artifact vocabulary, image
set sha256-disjoint from all other cached AI4Manufacturing datasets).
Resolution. Images are native 1920×1080 (not downscaled — preserves thin scratches); all coordinates live in that pixel space (see metadata.image_wh).
Query diversity. query is drawn from a fixed pool of surface variants (paraphrases preserving
the task + answer format), selected by an independent per-record hash; a machine gate confirms no
template correlates with the gold.
The repository name is an internal task code (the source dataset's code is
188).
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