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Reasonable Anomaly Detection in Long Sequences

arXiv 2309.03401 ↗First posted 6 Sep 2023cs.CVcited by 0

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Abstract (arXiv)

Video anomaly detection is a challenging task due to the lack in approaches for representing samples. The visual representations of most existing approaches are limited by short-term sequences of observations which cannot provide enough clues for achieving reasonable detections. In this paper, we propose to completely represent the motion patterns of objects by learning from long-term sequences. Firstly, a Stacked State Machine (SSM) model is proposed to represent the temporal dependencies which are consistent across long-range observations. Then SSM model functions in predicting future states based on past ones, the divergence between the predictions with inherent normal patterns and observed ones determines anomalies which violate normal motion patterns. Extensive experiments are carried out to evaluate the proposed approach on the dataset and existing ones. Improvements over state-of-the-art methods can be observed. Our code is available at https://github.com/AllenYLJiang/Anomaly-Detection-in-Sequences.

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References · 35

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23 more
  1. 2019Adaptive Attention Span in Transformerscited by 148
  2. 2020Anomaly Detection in Video via Self-Supervised and Multi-Task Learningcited by 147
  3. 2020Deep Transformer Models for Time Series Forecasting: The Influenza Prevalence Casecited by 129
  4. 2021A Hybrid Video Anomaly Detection Framework via Memory-Augmented Flow Reconstruction and Flow-Guided Frame Predictioncited by 129
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  11. 2021UBnormal: New Benchmark for Supervised Open-Set Video Anomaly Detectioncited by 91
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  17. 2022Video Anomaly Detection by Solving Decoupled Spatio-Temporal Jigsaw Puzzlescited by 62
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