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Proceedings Paper

Accuracy improvement of shape measurement using whole-space tabulation method
Author(s): M. Fujigaki; A. Masaya; R. Murakami; Y. Morimoto
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Paper Abstract

High-speed and accurate shape measurement method is required in many industrial areas. We proposed a shape measurement method using pixel-by-pixel calibration tables produced with multiple reference planes. In this method, all the relationships between the phase of the projected grating and the spatial coordinates can be obtained for each pixel. We call it "whole-space tabulation method". This method excludes a lens distortion and the intensity warping of the projected grating in measurement results theoretically. Tabulation makes high-speed measurement possible. A high-speed and accurate shape measurement system can be possible to develop easily using this method. Random noise occurring in an imaging device and optical setup, however, causes error in this method. In this paper, accuracy improvement methods and the effectiveness for shape measurement using the whole-space tabulation method are shown.

Paper Details

Date Published: 14 April 2010
PDF: 9 pages
Proc. SPIE 7522, Fourth International Conference on Experimental Mechanics, 75220G (14 April 2010); doi: 10.1117/12.854722
Show Author Affiliations
M. Fujigaki, Wakayama Univ. (Japan)
A. Masaya, Wakayama Univ. (Japan)
R. Murakami, Wakayama Univ. (Japan)
Y. Morimoto, Moiré Institute Inc. (Japan)

Published in SPIE Proceedings Vol. 7522:
Fourth International Conference on Experimental Mechanics
Chenggen Quan; Kemao Qian; Anand Krishna Asundi; Fook Siong Chau, Editor(s)

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