Color-coded grating 3D profile measurement and its application

Weiyi Liu; Zhaoqi Wang; Guoguang Mu; ZhiLiang Fang

doi:10.1117/12.402587

9 October 2000 Color-coded grating 3D profile measurement and its application

Weiyi Liu, Zhaoqi Wang, Guoguang Mu, ZhiLiang Fang

Proceedings Volume 4221, Optical Measurement and Nondestructive Testing: Techniques and Applications; (2000) https://doi.org/10.1117/12.402587
Event: Optics and Optoelectronic Inspection and Control: Techniques, Applications, and Instruments, 2000, Beijing, China

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.

Citation Download Citation

Weiyi Liu, Zhaoqi Wang, Guoguang Mu, and ZhiLiang Fang "Color-coded grating 3D profile measurement and its application", Proc. SPIE 4221, Optical Measurement and Nondestructive Testing: Techniques and Applications, (9 October 2000); https://doi.org/10.1117/12.402587

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