A Study on Biomechanical Noise Reduction Technique Using Length Information

길이 정보를 이용한 생체 잡음 제거 기술에 관한 연구

Gang, Sin-Gil;Yun, Yong-San;Park, Jae-Hui

  • Published : 2000.07.01


When markers attached to body segment are captured by camera, they generally have many noises due to intrinsic biomechanical characteristics. In this study, one technique to reduce these noises is suggested, which constructs a local coordinates of the markers using time-mean lengths of the measured markers and calculates a linear transformation matrix of the interesting body using least square error technique. This matrix is decomposed into two matrices of rotation and flexibility. Suggested method does well for 3 markers or more, and shows consistent results without regard to choice of reference axis.


Motion Analysis;Biomechanical Noise;Polar Decomposition;Rigid Body Information;Filter;Kinematics


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