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Proceedings Paper

Position and orientation measurement for large-size workpiece based on binocular vision
Author(s): Fuguo Liu; Xiaoping Lou; Naiguang Lv; Peng Sun
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Paper Abstract

Based on the CAD model of the free-form surface workpiece, an automatic method to obtain the position and orientation of the workpiece without contact is proposed. The method consists of two steps. The first step is rough localization which gets the approximate correspondence between workpiece and CAD model based on surface features. The second step is fine localization. It is achieved by searching the nearest point on the CAD surface to the light dot by gridsubdivide surface of CAD model. ICP (iterative closest point) algorithm that obtains precise correspondences between the workpiece and the CAD model is used for this step. Experiments were carried out and the results show that the method is efficient and robust.

Paper Details

Date Published: 12 November 2010
PDF: 8 pages
Proc. SPIE 7855, Optical Metrology and Inspection for Industrial Applications, 785529 (12 November 2010); doi: 10.1117/12.871802
Show Author Affiliations
Fuguo Liu, Beijing Information Science and Technology Univ. (China)
Xiaoping Lou, Beijing Information Science and Technology Univ. (China)
Naiguang Lv, Beijing Information Science and Technology Univ. (China)
Peng Sun, Beijing Information Science and Technology Univ. (China)


Published in SPIE Proceedings Vol. 7855:
Optical Metrology and Inspection for Industrial Applications
Kevin Harding; Peisen S. Huang; Toru Yoshizawa, Editor(s)

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