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Towards Total Recall in Industrial Anomaly Detection

CVPR 2022 · Detection and segmentation › Open-set and few-shot detection · approach: Industrial anomaly detection · 1,653 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Use locally aware patch features from intermediate levels 2 and 3 instead of relying on deep, abstract featuresPatchCore · MVTec ADimage AUROC: 99.1 vs 97.9Helped
Subsample the memory bank with greedy coreset selection to 10% (ablation)PatchCore · MVTec ADinference time: 0.6 -> 0.22Helped
Reduce the memory bank to 1% with greedy coreset selection rather than using the full bank (ablation)PatchCore · MVTec ADinference time: 0.6 -> 0.17Helped
Reduce the memory bank to 1% with greedy coreset selection (ablation)PatchCore · MVTec ADimage AUROC: 99.1 -> 99.0No clear effect
Reduce the memory bank to 1% with greedy coreset selection (ablation)PatchCore · MVTec ADpixel AUROC: 98.1 -> 98.0No clear effect
Use greedy coreset subsampling instead of random or learned-proxy subsampling (ablation)PatchCore · MVTec ADanomaly detection and localization performanceHelped
Increase patch-feature stride to 2 (ablation)PatchCore · MVTec ADimage AUROC: 97.6%Hurt
Increase patch-feature stride to 3 (ablation)PatchCore · MVTec ADimage AUROC: 96.8%Hurt
Add hierarchy 1 to hierarchy levels 2 and 3 (ablation)PatchCore-1%, WideResNet101, image size 280 · MVTec ADimage AUROC: 99.4 -> 99.2Hurt
Add hierarchy 1 to hierarchy levels 2 and 3 (ablation)PatchCore-1%, WideResNet101, image size 280 · MVTec ADpixel AUROC: 98.2 -> 98.4Helped
Use an ensemble with higher-resolution images and larger backbones (ablation)PatchCore-1% · MVTec ADimage AUROC: 99.0 -> 99.6Helped
Use the maximum patch distance without neighbor-based score reweighting (ablation)PatchCore · MVTec ADanomaly detection robustnessHurt

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