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Zheyi Fan, Wei Li, Zhonghang He, Zhiwen Liu. Abnormal Crowd Behavior Detection Based on the Entropy of Optical Flow[J]. JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2019, 28(4): 756-763. doi: 10.15918/j.jbit1004-0579.18098
Citation: Zheyi Fan, Wei Li, Zhonghang He, Zhiwen Liu. Abnormal Crowd Behavior Detection Based on the Entropy of Optical Flow[J].JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2019, 28(4): 756-763.doi:10.15918/j.jbit1004-0579.18098

Abnormal Crowd Behavior Detection Based on the Entropy of Optical Flow

doi:10.15918/j.jbit1004-0579.18098
  • Received Date:2018-06-11
  • To improve the detection accuracy and robustness of crowd anomaly detection, especially crowd emergency evacuation detection, the abnormal crowd behavior detection method is proposed. This method is based on the improved statistical global optical flow entropy which can better describe the degree of chaos of crowd. First, the optical flow field is extracted from the video sequences and a 2D optical flow histogram is gained. Then, the improved optical flow entropy, combining information theory with statistical physics is calculated from 2D optical flow histograms. Finally, the anomaly can be detected according to the abnormality judgment formula. The experimental results show that the detection accuracy achieved over 95% in three public video datasets, which indicates that the proposed algorithm outperforms other state-of-the-art algorithms.
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