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Proceedings Paper

The Use Of Videography For Three-Dimensional Motion Analysis
Author(s): D. A. Hawkins; D. L. Hawthorne; G. S. DeLozier; K. R. Campbell; M. D. Grabiner
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Paper Abstract

Special video path editing capabilities with custom hardware and software, have been developed for use in conjunction with existing video acquisition hardware and firmware. This system has simplified the task of quantifying the kinematics of human movement. A set of retro-reflective markers are secured to a subject performing a given task (i.e. walking, throwing, swinging a golf club, etc.). Multiple cameras, a video processor, and a computer work station collect video data while the task is performed. Software has been developed to edit video files, create centroid data, and identify marker paths. Multi-camera path files are combined to form a 3D path file using the DLT method of cinematography. A separate program converts the 3D path file into kinematic data by creating a set of local coordinate axes and performing a series of coordinate transformations from one local system to the next. The kinematic data is then displayed for appropriate review and/or comparison.

Paper Details

Date Published: 4 February 1988
PDF: 4 pages
Proc. SPIE 0832, High Speed Photography, Videography, and Photonics V, (4 February 1988); doi: 10.1117/12.942206
Show Author Affiliations
D. A. Hawkins, Cleveland Clinic Foundation (United States)
D. L. Hawthorne, Cleveland Clinic Foundation (United States)
G. S. DeLozier, Cleveland Clinic Foundation (United States)
K. R. Campbell, Cleveland Clinic Foundation (United States)
M. D. Grabiner, Cleveland Clinic Foundation (United States)

Published in SPIE Proceedings Vol. 0832:
High Speed Photography, Videography, and Photonics V
Howard C. Johnson, Editor(s)

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