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Articulated Skeleton Fitting

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4 Author(s)
Gaojin Wen ; ShenZhen Institute of Advanced Technology, Chinese Academy of Sciences, 518007 ShenZhen, China; Institute of Computing Technology, Chinese Academy of Sciences, 100080 Beijing, China. ; Zhaoqi Wang ; Shihong Xia ; Chunpeng Li

As it widely exists in applications as diverse as biomechanics, motion capture and robot control, the fundamental problem of articulated skeleton fitting, which is to fit an articulated skeleton to k frames of corresponding raw joint points under the fixed-bone-length constraint, is proposed in this paper. With different parametrization of the articulated skeleton, three types of potential solutions to the above problem are presented and compared. Special cases for this problem, including that generated under joint trajectory smoothness constraints and from weighted joints, are also discussed and analyzed. Based on the joint location parametrization and the sparse matrix techniques, we propose an efficient and accurate articulated skeleton fitting method (JLP2). Elaborate experiments and interesting applications in motion capture are presented to show its effectiveness.

Published in:

Computer-Aided Design and Computer Graphics, 2007 10th IEEE International Conference on

Date of Conference:

15-18 Oct. 2007