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Optical Engineering

Detection of dominant flow and abnormal events in surveillance video
Author(s): Sooyeong Kwak; Hyeran Byun
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Paper Abstract

We propose an algorithm for abnormal event detection in surveillance video. The proposed algorithm is based on a semi-unsupervised learning method, a kind of feature-based approach so that it does not detect the moving object individually. The proposed algorithm identifies dominant flow without individual object tracking using a latent Dirichlet allocation model in crowded environments. It can also automatically detect and localize an abnormally moving object in real-life video. The performance tests are taken with several real-life databases, and their results show that the proposed algorithm can efficiently detect abnormally moving objects in real time. The proposed algorithm can be applied to any situation in which abnormal directions or abnormal speeds are detected regardless of direction.

Paper Details

Date Published: 1 February 2011
PDF: 8 pages
Opt. Eng. 50(2) 027202 doi: 10.1117/1.3542038
Published in: Optical Engineering Volume 50, Issue 2
Show Author Affiliations
Sooyeong Kwak, Yonsei Univ. (Korea, Republic of)
Hyeran Byun, Yonsei Univ. (Korea, Republic of)

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