摘要
针对虚拟人技术中被动式光学捕捉系统丢点或误匹配问题,利用标志点运动的连续性和局部相关性提出了一种检测和补偿的方法。注意到标志点运动的连续性,利用轨迹的二阶导数检测标志点畸变的时刻。由于标志点在人体分布的局部相关性,从刚性模型和线性模型两个角度,利用与畸变点相邻的标志点修正和补偿畸变点的真正位置。实验结果验证了所提方法的有效性。
Aiming at the problem of markers mismatching and missing in passive-optical motion capture system, a method detecting and rectifying those erroneous points is presented by considering the local relationships and continuity of those markers. First, the abnormal points are detected by finding the extra-large second order derivatives of the markers＇ trajectories. Second, the neighbor markers are used to estimate the abnormal points based on least square from two types of relationships, grid model and linear model. Finally, the experiments show the validity of the proposed method.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2012年第11期2374-2378,共5页
Systems Engineering and Electronics
基金
中国博士后科学基金(2011M501456)资助课题
关键词
丢点补偿
丢点检测
三维重建
虚拟人
missing marker rectification
missing marker detection
3-dimension reconstruction
virtual human
