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A Dynamic Hierarchical Clustering Method for Trajectory-Based Unusual Video Event Detection

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3 Author(s)
Fan Jiang ; Electr. Eng. & Comput. Sci. Dept., Northwestern Univ., Evanston, IL ; Ying Wu ; Aggelos K. Katsaggelos

The proposed unusual video event detection method is based on unsupervised clustering of object trajectories, which are modeled by hidden Markov models (HMM). The novelty of the method includes a dynamic hierarchical process incorporated in the trajectory clustering algorithm to prevent model overfitting and a 2-depth greedy search strategy for efficient clustering.

Published in:

IEEE Transactions on Image Processing  (Volume:18 ,  Issue: 4 )