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基于非参数信念传播的可行C-空间关节人手跟踪方法 被引量:13

3D Articulated Hand Tracking by Nonparametric Belief Propagation on Feasible Configuration Space
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摘要 采用三维人手图模型描述了人手结构、运动学、动力学及自遮挡特性,将人手高维(27维)跟踪问题转为并行跟踪16个6维变量的问题,降低了计算复杂度.在非参数信念传播过程中嵌入连续自适应均值漂移方法得到可行C-空间,在该空间中传递消息以提高跟踪效率.实验结果表明,该方法在人手发生自遮挡的情况下,能快速、鲁棒地跟踪关节人手. We design a pertinence graphical model, combined with domain-specific heuristics among the components of human hand, to describe the hand's 3D structure, kinematics, dynamics and self-occlusion. The modular structure facilitates tracking each hand component (sixteen variables of six degrees of freedom) separately instead of tracking hand configuration of 27 degrees of freedom as a while to reduce the computational complexity. Then, a more efficient belief propagation method embedding continuously adaptive mean shift (CAMSHIFT) algorithm to obtain configuration space (C-space) is proposed. Belief propagation is processed in the feasible C-space to increase the tracking efficiency. The experimental results show that our proposed method can track articulated hand robustly and efficiently under self-occlusion.
出处 《计算机辅助设计与图形学学报》 EI CSCD 北大核心 2008年第4期476-481,共6页 Journal of Computer-Aided Design & Computer Graphics
基金 国家自然科学基金(60473049) 国家"八六三"高技术研究发展计划(2006AA01Z120)
关键词 关节人手跟踪 图模型 非参数信念传播 articulated hand tracking graphical model nonparametric belief propagation
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参考文献18

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