Person real-time tracking for video communication

Yihua Xu; Yunde Jia; Wanchun Liu

doi:10.1117/12.424950

27 April 2001 Person real-time tracking for video communication

Yihua Xu, Yunde Jia, Wanchun Liu

Proceedings Volume 4303, Real-Time Imaging V; (2001) https://doi.org/10.1117/12.424950
Event: Photonics West 2001 - Electronic Imaging, 2001, San Jose, CA, United States

Abstract

This paper presents a real-time head tracking method with a single black/white camera. This method mainly consists of two steps: block-based head tracking, and geometry-based correction. The block-based tracking method only uses low- level image information and can be used to track the free motion of the head. To improve the performance of block- based tracking during person turning around, we introduce a cylindrical model to approximate head, and extract features in the warped cylindrical surface. The correction step is introduced to address the shift caused by error accumulating of the block-based tracking method. This step utilizes the head contour geometry information, and measures the displacements between the head contour model and real contour in a current image, and hereby to correct the results of block tracking. We also set up a tracking system with a 350 megahertz microcomputer base on the proposed method, which operates at 30 frames per second with the tracking window size of 120 by 180 pixels and 80 tracking features.

Citation Download Citation

Yihua Xu, Yunde Jia, and Wanchun Liu "Person real-time tracking for video communication", Proc. SPIE 4303, Real-Time Imaging V, (27 April 2001); https://doi.org/10.1117/12.424950

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