| 被动式光学运动捕捉系统丢点检测与补偿 |
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| 引用本文： | 王军,胡永刚,韩崇昭. 被动式光学运动捕捉系统丢点检测与补偿[J]. 系统工程与电子技术, 2012, 34(11): 2374-2378. DOI: 10.3969/j.issn.1001-506X.2012.11.32 |
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| 作者姓名： | 王军 胡永刚 韩崇昭 |
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| 作者单位： | 1. 西安交通大学电子与信息工程学院, 陕西 西安 710049；2. 中国酒泉卫星发射中心, 甘肃 兰州 732750 |
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| 基金项目： | 中国博士后科学基金(2011M501456)资助课题 |
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| 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。
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| 关 键 词： | 丢点补偿 丢点检测 三维重建 虚拟人 |
Detection and rectification for missing markers in passive-optical motion capture system |
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| WANG Jun , HU Yong-gang , HAN Chong-zhao. Detection and rectification for missing markers in passive-optical motion capture system[J]. System Engineering and Electronics, 2012, 34(11): 2374-2378. DOI: 10.3969/j.issn.1001-506X.2012.11.32 |
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| Authors: | WANG Jun HU Yong-gang HAN Chong-zhao |
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| Affiliation: | 1. School of Electronic and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, China;;2. Jiuquan Satellite Launch Center, Lanzhou 732750, China |
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| Abstract: | 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. |
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