Three-dimensional gauging with stereo computer vision

Kam W. Wong; Ying Ke; Michael S. Lew; Mohammed Taleb Obaidat

doi:10.1117/12.48233

1 September 1991 Three-dimensional gauging with stereo computer vision

Kam W. Wong, Ying Ke, Michael S. Lew, Mohammed Taleb Obaidat

Proceedings Volume 1526, Industrial Vision Metrology; (1991) https://doi.org/10.1117/12.48233
Event: Industrial Vision Metrology, 1991, Winnipeg, Canada

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.

Citation Download Citation

Kam W. Wong, Ying Ke, Michael S. Lew, and Mohammed Taleb Obaidat "Three-dimensional gauging with stereo computer vision", Proc. SPIE 1526, Industrial Vision Metrology, (1 September 1991); https://doi.org/10.1117/12.48233

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