Kinematic analysis of human body motion

Yuhei Wada; Hiroyuki Yamashita; Tetsu Nishimura; Masaru Itoh; Naoki Watanabe; Shigeru Yanagi

doi:10.1117/12.269884

20 March 1997 Kinematic analysis of human body motion

Yuhei Wada, Hiroyuki Yamashita, Tetsu Nishimura, Masaru Itoh, Naoki Watanabe, Shigeru Yanagi

Proceedings Volume 2921, International Conference on Experimental Mechanics: Advances and Applications; (1997) https://doi.org/10.1117/12.269884
Event: International Conference on Experimental Mechanics: Advances and Applications, 1996, Singapore, Singapore

Abstract

The knowledge of analyzing a human motion can contribute to the treatment and the prevention of sports injuries or the investigation of welfare equipment. It is important to know the human motion by not only the medical field but the mechanical knowledge. The mechanical knowledge is expected to prevent the sports injuries or to design such as an artificial equipment. Here, we suggest a basic procedure to analyze a human motion from the view of the dynamical knowledge. Although the human body is composed of a lot of element and joint, if the slight movement on the joint such as dislocation and distortion is neglected, the human body can be replaced by a mechanical links system. On this assumption, we analyze an actual simple human motion. We take a picture of a simple arm motion from video cameras. And at the same time, we directly measure the vertical acceleration of the hand by an accelerometer. From the video image, we get the vertical acceleration of the hand with assuming the arm as two-links system. On the process of resolving the vertical acceleration of the hand, we introduce the Fourier series for filtering. Finally, we confirm the propriety of our suggested procedure by comparing the calculated acceleration of hand with the directly measured acceleration.

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Yuhei Wada, Hiroyuki Yamashita, Tetsu Nishimura, Masaru Itoh, Naoki Watanabe, and Shigeru Yanagi "Kinematic analysis of human body motion", Proc. SPIE 2921, International Conference on Experimental Mechanics: Advances and Applications, (20 March 1997); https://doi.org/10.1117/12.269884

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KEYWORDS

Motion analysis

Cameras

Video

Injuries

Motion measurement

Kinematics

Solids

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