Journal of Systems Engineering and Electronics ›› 2012, Vol. 34 ›› Issue (11): 2374-2378.doi: 10.3969/j.issn.1001-506X.2012.11.32

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Detection and rectification for missing markers in passive-optical motion capture system

WANG Jun1,2, HU Yong-gang2, HAN Chong-zhao1   

  1. 1. School of Electronic and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, China;
    2. Jiuquan Satellite Launch Center, Lanzhou 732750, China
  • Online:2012-11-20 Published:2010-01-03

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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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