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Comprehensive Regularization in a Bi-directional Predictive Network for Video Anomaly Detection

AAAI 2022 · Video › Video segmentation and tracking · approach: Weakly supervised video anomaly detection · 76 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
add backward prediction using backward-time information (ablation)Bidirectional Predictive Networks · UCSD Ped2AUC: 97.3% -> 97.9%Helped
add backward prediction using backward-time information (ablation)Bidirectional Predictive Networks · CUHK AvenueAUC: 89.6% -> 90.0%Helped
add backward prediction using backward-time information (ablation)Bidirectional Predictive Networks · Traffic-TrainAUC: 64.2% -> 66.6%Helped
add a second forward predictor instead of a backward predictor (ablation)Bidirectional Predictive Networks · UCSD Ped2 and CUHK AvenueAUC: 97.3% -> 97.3%; 89.6% -> 89.5%No clear effect
add sequence-wise discriminator for temporal consistency (ablation)Bidirectional Predictive Networks · UCSD Ped2, CUHK Avenue, and Traffic-TrainAUC: 0.2%, 0.1% and 1.0% AUC gainHelped
add multi-modal discriminator for association consistency (ablation)Bidirectional Predictive Networks · UCSD Ped2, CUHK Avenue, and Traffic-TrainAUC: 0.2%, 0.2%, and 0.9%Helped
add Laplacian pyramid loss to MSE (ablation)Appearance prediction · UCSD Ped2, CUHK Avenue, and Traffic-TrainAUC: 98.0% -> 98.3%; 90.1% -> 90.3%; 67.1% -> 68.5%Helped
use a 5-frame video event instead of 3, 7, or 9 frames (ablation)Bidirectional Predictive Networks · UCSD Ped2, CUHK Avenue, and Traffic-TrainAUC: 93.5%, 97.1%, 96.6% -> 98.3%; 88.1%, 89.3%, 89.1% -> 90.3%; 65.7%, 66.7%, 64.5% -> 68.5%Mixed
use the proposed method rather than VECVideo anomaly detection · UCSD Ped2frame-level AUC: 97.3% -> 98.3%Helped
use the proposed method rather than VECVideo anomaly detection · CUHK Avenueframe-level AUC: 89.6% -> 90.3%Helped
use the proposed method rather than VECVideo anomaly detection · ShanghaiTechframe-level AUC: 74.8% -> 78.1%Helped

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