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Proceedings Paper

Three-dimensional gauging with stereo computer vision
Author(s): Kam W. Wong; Ying Ke; Michael S. Lew; Mohammed Taleb Obaidat
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Paper Abstract

Three-dimensional gaging involves the measurement and mapping of 3-D surfaces. Gaging accuracy depends on measurement accuracy in the images, image scale, and stereo geometry. Multiple cameras are often needed to provide adequate stereoscopic coverage of the object. This paper reports on an automatic 3-D gaging system that is being developed at the University of Illinois at Urbana-Champaign. A portable 3-D target field, consisting of 198 targets each identified with a bar code, is used to determine the interior and exterior orientation parameters of each camera. Image-processing algorithms have been developed to identify conjugate image points in stereo pair of images, and the object-space coordinates of these points are computed by stereo intersection. Software has also been developed for analysis and data editing.

Paper Details

Date Published: 1 September 1991
PDF: 10 pages
Proc. SPIE 1526, Industrial Vision Metrology, (1 September 1991); doi: 10.1117/12.48233
Show Author Affiliations
Kam W. Wong, Univ. of Illinois/Urbana-Champaign (United States)
Ying Ke, Univ. of Illinois/Urbana-Champaign (United States)
Michael S. Lew, Univ. of Illinois/Urbana-Champaign (United States)
Mohammed Taleb Obaidat, Univ. of Illinois/Urbana-Champaign (United States)

Published in SPIE Proceedings Vol. 1526:
Industrial Vision Metrology

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