(西北工业大学 计算机学院, 西安 710072)
关键词:外极线约束; 三维Kalman滤波器; 三维人体运动跟踪; 人体约束
3D human motion tracking algorithm in binocular camera system
CAI Jie, ZHENG Jiang-bin
(School of Computer, Northwestern Polytechnical University, Xian 710072, China)
It is very difficult to track human motion which involves self-occlusion and rapid change in trajectory of human motion due to the complexity of human motion. This paper proposed an approach using 3D Kalman filter and human constraints to try to solve these problems in a binocular camera system. Firstly, attached some markers to the human body at key joints, and initialized 3D Kalman filter. Secondly, in order to establish 3D markers, matched the corresponding 2D markers of each binocular image pair by means of epipolar restriction. Thirdly, tracked 3D markers by 3D Kalman filter. Finally, used human constraints to verify the correctness of the tracking results, and revise the tracking errors. Experimental results demonstrate the proposed algorithm can track complex human motion accurately and also can revise the tracking errors. ......