Interferometry

Advanced continuous wavelet transform algorithm for digital interferogram analysis and processing

[+] Author Affiliations
Zhaoyang Wang

The Catholic University of America, Department of Mechanical Engineering, Washington, DC 20064

Huanfeng Ma

University of Maryland, Department of Electrical and Computer Engineering, College Park, Maryland 20742

Opt. Eng. 45(4), 045601 (April 03, 2006). doi:10.1117/1.2188399
History: Received April 19, 2005; Revised August 18, 2005; Accepted August 29, 2005; Published April 03, 2006
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An advanced continuous wavelet transform algorithm for digital interferogram analysis and processing is proposed. The algorithm is an extension of the traditional wavelet transform; the mother wavelet and normalization parameter are selected based on the characteristics of optical interferograms. To reduce the processing time, a fast Fourier transform scheme is employed to implement the wavelet transform calculation. The algorithm is simple and is a robust tool for interferogram filtering and for whole-field fringe and phase information detection. The concept is verified by computer simulation and actual experimental interferogram analysis.

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© 2006 Society of Photo-Optical Instrumentation Engineers

Citation

Zhaoyang Wang and Huanfeng Ma
"Advanced continuous wavelet transform algorithm for digital interferogram analysis and processing", Opt. Eng. 45(4), 045601 (April 03, 2006). ; http://dx.doi.org/10.1117/1.2188399


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