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Proceedings Paper

On improving the resolution and accuracy of a compact 3D shape measurement system
Author(s): Jian Gao; Kairen Deng; Peisen Huang
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Paper Abstract

A compact 3-D shape measurement system based on the combined stereovision and phase shifting method has been developed, which consists of a miniature projector and two small cameras arranged as a stereo pair. The projector projects sinusoidal phase shifted fringe patterns, which are captured by both cameras simultaneously. The two phase maps calculated are used for stereo matching. The 3-D shape of the object is then reconstructed by the triangulation method. This research focuses on improving the resolution and accuracy of the measurement system by using a sub-pixel stereo matching method, a multi-image averaging method, and an error compensation method. Experimental results are presented to show the effectiveness of the proposed methods in improving the resolution and accuracy of the system.

Paper Details

Date Published: 14 September 2011
PDF: 6 pages
Proc. SPIE 8133, Dimensional Optical Metrology and Inspection for Practical Applications, 81330C (14 September 2011); doi: 10.1117/12.895340
Show Author Affiliations
Jian Gao, Univ. of Michigan-Shanghai Jiao Tong Univ. Joint Institute (China)
Kairen Deng, Univ. of Michigan-Shanghai Jiao Tong Univ. Joint Institute (China)
Peisen Huang, Univ. of Michigan-Shanghai Jiao Tong Univ. Joint Institute (China)


Published in SPIE Proceedings Vol. 8133:
Dimensional Optical Metrology and Inspection for Practical Applications
Kevin G. Harding; Peisen S. Huang; Toru Yoshizawa, Editor(s)

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