Interferometry

Dilating Gabor transform for the fringe analysis of 3-D shape measurement

[+] Author Affiliations
Jingang Zhong, Jiawen Weng

Jinan University, Department of Physics, Guangzhou?510632, China

Opt. Eng. 43(4), 895-899 (Apr 01, 2004). doi:10.1117/1.1666870
History: Received Aug. 4, 2003; Revised Nov. 10, 2003; Accepted Nov. 11, 2003; Online March 31, 2004
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In order to overcome the limitations of conventional Fourier transform and Gabor transform analyzing nonstationary signals, dilating Gabor transform is applied to analyze the optical fringes of 3-D shape measurement. The dilating Gabor transformation is introduced by using a changeable window of Gaussian function in a conventional Gabor transform. This phase analysis method provides more accurate results than Fourier transform and Gabor transform. Simulation and experimental results are presented that demonstrate the validity of the principle. © 2004 Society of Photo-Optical Instrumentation Engineers.

© 2004 Society of Photo-Optical Instrumentation Engineers

Citation

Jingang Zhong and Jiawen Weng
"Dilating Gabor transform for the fringe analysis of 3-D shape measurement", Opt. Eng. 43(4), 895-899 (Apr 01, 2004). ; http://dx.doi.org/10.1117/1.1666870


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