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

被引:87
作者
Jiang, Fan [1 ]
Wu, Ying [1 ]
Katsaggelos, Aggelos K. [1 ]
机构
[1] Northwestern Univ, Dept Elect Engn & Comp Sci, Evanston, IL 60208 USA
关键词
Event detection; unsupervised clustering; video surveillance; RECOGNITION;
D O I
10.1109/TIP.2008.2012070
中图分类号
TP18 [人工智能理论];
学科分类号
081104 ; 0812 ; 0835 ; 1405 ;
摘要
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.
引用
收藏
页码:907 / 913
页数:7
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