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Proceedings Paper

Fourier transform profilometry based on a fringe pattern with two frequency components
Author(s): Wenjing Chen; Xianyu Su; Yipping Cao; Liqun Xiang; Qican Zhang
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Paper Abstract

A modified Fourier transform profilomtry (FTP) based on a fringe pattern with two frequency components is proposed. We discuss its principle, analyze the maximum measuring range and give an expression to describe the measurable slope of the height variation limitation of this method. The modified FTP provides us another approach to eliminate frequency overlapping. When the spectra distribution of a measured object is not spherical symmetry, we can avoid the frequency aliasing through projecting a fringe pattern with two frequency components, instead of increasing the density of the projected fringe and the resolution of CCD camera. The theoretical analysis and primary experiments verified the method.

Paper Details

Date Published: 20 January 2006
PDF: 9 pages
Proc. SPIE 6027, ICO20: Optical Information Processing, 60271I (20 January 2006); doi: 10.1117/12.667958
Show Author Affiliations
Wenjing Chen, Sichuan Univ. (China)
Xianyu Su, Sichuan Univ. (China)
Yipping Cao, Sichuan Univ. (China)
Liqun Xiang, Sichuan Univ. (China)
Qican Zhang, Sichuan Univ. (China)

Published in SPIE Proceedings Vol. 6027:
ICO20: Optical Information Processing
Yunlong Sheng; Songlin Zhuang; Yimo Zhang, Editor(s)

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