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Learning Normal Dynamics in Videos With Meta Prototype Network

CVPR 2021 · Video › Video segmentation and tracking · approach: Weakly supervised video anomaly detection · 222 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Add DPU to AE (ablation)AE · UCSD Ped1AUC (%): 83.2 -> 85.1Helped
Add DPU to AE (ablation)AE · UCSD Ped2AUC (%): 95.1 -> 96.9Helped
Add DPU to AE (ablation)AE · CUHK AvenueAUC (%): 84.0 -> 89.5Helped
Add DPU to AE (ablation)AE · ShanghaiTechAUC (%): 66.7 -> 73.8Helped
Combine frame-prediction and feature-reconstruction anomaly scores (ablation)DPU-based AE · UCSD Ped2AUC (%): 92.6 / 96.2 -> 96.9Helped
Use frame-prediction score alone rather than combine it with feature reconstruction (ablation)DPU-based AE · UCSD Ped2AUC (%): 96.9 -> 92.6Hurt
Place DPU at full input resolution rather than lower resolution (ablation)DPU-based AE · UCSD Ped2 feature-reconstruction scoreAUC: 81.18, 84.66, 86.72 -> 89.19Helped
Increase prototype count from 1 to 10 (ablation)DPU · UCSD Ped2AUC (Overall): 95.22 -> 96.90Helped
Increase prototype count from 10 to 20 or 40 (ablation)DPU · UCSD Ped2AUC (Overall): 96.90 -> 96.03; 95.74Hurt
Use meta-trained MPU rather than the non-adapted modelDPU-based AE · UCSD Ped2, Shanghai Tech cross-dataset, 10-shot vs 0-shotAUC (%): 90.17 -> 95.75Helped
Use meta-trained MPU rather than the non-adapted modelDPU-based AE · CUHK Avenue, UCF-Crime cross-dataset, 10-shot vs 0-shotAUC (%): 82.26 -> 85.91Helped
Use the proposed MPU instead of rGAN (Meta)Cross-dataset anomaly detection · UCSD Ped1, Shanghai Tech cross-dataset, 1-shotAUC (%): 80.6 -> 78.54Hurt

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