Spatio-temporal representation and retrieval using moving object's trajectories

Authors:
Choon-Bo Shim;Jae-Woo Chang
Affiliations:
Dept. of Computer Engineering, Chonbuk National University, Chonju, Chonbuk 560-756, South Korea;Dept. of Computer Engineering, Chonbuk National University, Chonju, Chonbuk 560-756, South Korea
Venue:
MULTIMEDIA '00 Proceedings of the 2000 ACM workshops on Multimedia
Year:
2000

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Abstract

In this paper, we propose a new spatio-temporal representation scheme using moving objects' trajectories in video data. In order to support content-based retrieval on video data very well, our representation scheme considers the moving distance of an object during a given time interval as well as its temporal and spatial relations. Based on our representation scheme, we present a new similarity measure algorithms for the trajectory of moving objects, which provides ranking for the retrieved video results. Finally, we show from our experiment that our representation scheme achieves about 20% higher precision while holding about the same recall, compared with Li's and Shan's schemes.