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Proceedings Paper

Person real-time tracking for video communication
Author(s): Yihua Xu; Yunde Jia; Wanchun Liu
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Paper 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.

Paper Details

Date Published: 27 April 2001
PDF: 8 pages
Proc. SPIE 4303, Real-Time Imaging V, (27 April 2001); doi: 10.1117/12.424950
Show Author Affiliations
Yihua Xu, Beijing Institute of Technology (China)
Yunde Jia, Beijing Institute of Technology (China)
Wanchun Liu, Beijing Institute of Technology (China)


Published in SPIE Proceedings Vol. 4303:
Real-Time Imaging V
Nasser Kehtarnavaz, Editor(s)

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