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Proceedings Paper

Quantitative Analysis Of Accuracy In The 3-D Video-Based Motion Analysis Corporation System
Author(s): D. L. Hawthorne,; G. S. DeLozier; D. A. Hawkins; K. R. Campbell; M . D . Grabiner
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Paper Abstract

A complete system to quantify three-dimensional human movement kinematics was developed and initial accuracy testing was completed. This video-based system incorporates a video processor produced by Motion Analysis Corporation to edge-detect markers in a calibrated space, a SUN computer work station to receive data from the video processor, and appropriate software for analysis of the data. A series of tests was performed to compare static and dynamic accuracy of this video-based system to that reported of other video and film-based systems. The mean absolute errors for the static testing were 4.0 mm in the X direction, 2.5 mm in the Y direction, and 5.4 mm in the Z direction, with standard deviations of 4.0, 1.8, and 5.9 mm respectively. The mean absolute errors for the static testing were 11.1, 2.6, and 17.6 mm in the X, Y, and Z directions, respectively, with standard deviations of 0.4, 0.5, and 1.1 mm. These errors are comparable to those of other video-based systems but are slightly higher than those found with film-based systems.

Paper Details

Date Published: 4 February 1988
PDF: 6 pages
Proc. SPIE 0832, High Speed Photography, Videography, and Photonics V, (4 February 1988); doi: 10.1117/12.942207
Show Author Affiliations
D. L. Hawthorne,, Cleveland Clinic Foundation (United States)
G. S. DeLozier, Cleveland Clinic Foundation (United States)
D. A. Hawkins, 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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