On improving the resolution and accuracy of a compact 3D shape measurement system

Jian Gao; Kairen Deng; Peisen Huang

doi:10.1117/12.895340

14 September 2011 On improving the resolution and accuracy of a compact 3D shape measurement system

Jian Gao, Kairen Deng, Peisen Huang

Proceedings Volume 8133, Dimensional Optical Metrology and Inspection for Practical Applications; 81330C (2011) https://doi.org/10.1117/12.895340
Event: SPIE Optical Engineering + Applications, 2011, San Diego, California, United States

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.

Citation Download Citation

Jian Gao, Kairen Deng, and Peisen Huang "On improving the resolution and accuracy of a compact 3D shape measurement system", Proc. SPIE 8133, Dimensional Optical Metrology and Inspection for Practical Applications, 81330C (14 September 2011); https://doi.org/10.1117/12.895340

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