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.
- Event detection
- Unsupervised clustering
- Video surveillance
ASJC Scopus subject areas
- Computer Graphics and Computer-Aided Design