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181-grounding
Detection-format anomaly localization — all 16,100 records of
AI4Manufacturing/181, deterministic (no LLM).
annot = [] (14,000 anomaly-free — rejection is in-task) or [{"bbox_xywh": [x,y,w,h]}], the
official ellipse's containing box in native pixels, floored to a 24-px minimum side (118
degenerate thin ellipse rasterizations — mostly Class8 — under-cover their visible mark;
metadata.degenerate_gt flags them and the floored box provably still contains the original,
verified on all 2,100). The query states the containment semantics. Grade by containment /
center-hit — the GT is deliberately coarse; tight-IoU rewards would punish correct answers.
Weak-GT disclosure. DAGM's official labels are deliberately COARSE ellipses ("roughly indicating"
the defect) — every localization here is a containing region, not a tight extent
(metadata.coarse_gt: true). Grade localization by containment/center-hit, never tight IoU.
Overlap / de-duplication (§8)
270 of these images (all anomalous, DAGM Classes covered by DefectSpectrum) also appear byte-identical
in the D15 family
(D15-annotated /
D15-mcq /
D15-region /
D15-grounding) with FINE masks and
defect-type labels. Reconstruct the exact overlap via metadata.image_sha256. Both official DAGM
splits are processed identically here (project policy): metadata.split preserves the original
Train/Test membership — carve your own held-out set downstream and keep it out of training.
Provenance
Built from AI4Manufacturing/181 by
annotate/181/build_181_derived.py (forge_model), verified by verify_181.py (box == mask-derived
ellipse bbox on all 2,100; [] exactly for goods; template independence). Convert box conventions at
train time via common/box_convert.py — regenerate, don't regex.
Companions: 181-annotated,
181-mcq,
181-region.
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