title: Detection of abnormal events via optical flow feature analysis.
abstract: In this paper, a novel algorithm is proposed to detect abnormal events in video streams. The algorithm is based on the histogram of the optical flow orientation descriptor and the classification method. The details of the histogram of the optical flow orientation descriptor are illustrated for describing movement information of the global video frame or foreground frame. By combining one-class support vector machine and kernel principal component analysis methods, the abnormal events in the current frame can be detected after a learning period characterizing normal behaviors. The difference abnormal detection results are analyzed and explained. The proposed detection method is tested on benchmark datasets, then the experimental results show the effectiveness of the algorithm.
authors: School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China. wangtian@buaa.edu.cn.
authors: Tian
authors: T
authors: Wang
authors: Institut Charles Delaunay-LM2S-UMR STMR 6279 CNRS, University of Technology of Troyes, Troyes 10004, France. hichem.snoussi@utt.fr.
authors: Hichem
authors: H
authors: Snoussi