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Proceedings Paper

Color-coded grating 3D profile measurement and its application
Author(s): Weiyi Liu; Zhaoqi Wang; Guoguang Mu; ZhiLiang Fang
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Paper Abstract

A fast and efficient technique for profilometric measurement using color-coded grating is proposed. Four colors are used to code the grating and each color represents only one logical state. There are 48 stripes in one period of the color grating, which is large enough for normal measurement. As compared with the previous techniques, it has the advantages of simple hardware without moving mechanical part, single exposure for obtaining 3D information, little influence of the noise and the nonlinearity of the CCD camera on the measurement accuracy, and higher anti- color-blurring capability. The suggested technique is suitable for on-line inspection and dynamic measurement of moving objects.

Paper Details

Date Published: 9 October 2000
PDF: 4 pages
Proc. SPIE 4221, Optical Measurement and Nondestructive Testing: Techniques and Applications, (9 October 2000); doi: 10.1117/12.402587
Show Author Affiliations
Weiyi Liu, Nankai Univ. (China)
Zhaoqi Wang, Nankai Univ. (China)
Guoguang Mu, Nankai Univ. (China)
ZhiLiang Fang, Nankai Univ. (China)

Published in SPIE Proceedings Vol. 4221:
Optical Measurement and Nondestructive Testing: Techniques and Applications
FeiJun Song; Frank Chen; Michael Y.Y. Hung; H.M. Shang, Editor(s)

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