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Proceedings Paper

A frequency encoding method for fringe projection profilometry
Author(s): Hongwei Guo; Mingyi Chen; Haitao He
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Paper Abstract

A frequency encoding approach for fringe projection profilometry is proposed. First, a series of fringe patterns are generated in computer where the pixels are encoded with the temporal frequencies. Second, the patterns are cast on the object surface by an LCD projector and then the distorted patterns are captured by a CCD camera. Third, a least squares algorithm based on a linear prediction is deduced to estimate the frequencies, and then the depth map is further reconstructed by using the mapping relationship between the temporal frequency and the depth of the object surface. Experimental results are presented to demonstrate the validity of this technique.

Paper Details

Date Published: 12 April 2005
PDF: 6 pages
Proc. SPIE 5852, Third International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics, (12 April 2005); doi: 10.1117/12.621933
Show Author Affiliations
Hongwei Guo, Shanghai Univ. (China)
Mingyi Chen, Shanghai Univ. (China)
Haitao He, Shanghai Univ. (China)


Published in SPIE Proceedings Vol. 5852:
Third International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics
Chenggen Quan; Fook Siong Chau; Anand Asundi; Brian Stephen Wong; Chwee Teck Lim, Editor(s)

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