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一种新的手势运动数据重定向方法
引用本文:葛春宝,陈益强,尹宝才,高文,杨长水.一种新的手势运动数据重定向方法[J].计算机学报,2006,29(10):1850-1855.
作者姓名:葛春宝  陈益强  尹宝才  高文  杨长水
作者单位:1. 北京工业大学多媒体与智能软件技术北京市重点实验室,北京,100022;中国科学院计算技术研究所,北京,100080
2. 中国科学院计算技术研究所,北京,100080
3. 北京工业大学多媒体与智能软件技术北京市重点实验室,北京,100022
基金项目:国家自然科学基金;国家高技术研究发展计划(863计划);北京市教委科技发展计划项目;北京市自然科学基金
摘    要:提出了一种新的重新定向手势运动数据的方法.它把通过运动捕获设备捕获的手势数据重新定向到具有不同大小和比例的虚拟人模型上,从而生成与原运动含义相同且真实自然的动画.首先通过手势特征分析在人体上选择关键敏感点和次关键敏感点,然后利用提出的基于空间相对位置的方法确定重定向后敏感点的位置,最后采用改进的逆运动学方法实现了手势运动的重定向.实验表明,提出的方法使得中国手语合成系统的可懂度提高30%以上.

关 键 词:角色动画  运动重定向  关键敏感点  逆运动学  中国手语
收稿时间:2004-10-09
修稿时间:2004-10-092006-01-23

A New Method for Motion Retargeting for the Hand Gesture
GE Chun-Bao,CHEN Yi-Qiang,YIN Bao-Cai,GAO Wen,YANG Chang-Shui.A New Method for Motion Retargeting for the Hand Gesture[J].Chinese Journal of Computers,2006,29(10):1850-1855.
Authors:GE Chun-Bao  CHEN Yi-Qiang  YIN Bao-Cai  GAO Wen  YANG Chang-Shui
Affiliation:1.Multimedia and Intelligent Software Technology Beijing Municipal Key Laboratory, Beijing University of Technology, Beijing 100022;2.institute of Computing Technology, Chinese Academy of Sciences, Beijing 100080
Abstract:Existed motion retargeting algorithms mostly focused on the motion between the character and the environment and seldom considered the interaction among the segments of a character, especially for the hand gesture. In this paper a new method for motion retargeting for the hand gesture is proposed. Realistic and natural animations with similar meanings to the original can be produced through the way. First many sensitive points are defined on the human body, and key sensitive points and secondary sensitive points are selected through analyzing the importance of the sensitive points. Then a novel method based on the relative position of the original sensitive points is proposed to compute the target sensitive point position, Finally an adapted IK solver is utilized to realize the retargeting problem. Experimental results show that the proposed method dramatically improves the recognition rate of the Chinese sign language synthesis system about 30%.
Keywords:character animation  motion retargeting  key sensitive point  IK  Chinese Sign Language
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