Multiscale windowed Fourier transform for phase extraction of fringe patterns
Applied Optics, Vol. 46, Issue 14, pp. 2670-2675 (2007)
http://dx.doi.org/10.1364/AO.46.002670
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Abstract
A multiscale windowed Fourier transform for phase extraction of fringe patterns is presented. A local stationary length of signal is used to control the window width of a windowed Fourier transform automatically, which is measured by an instantaneous frequency gradient. The instantaneous frequency of the fringe pattern is obtained by detecting the ridge of the wavelet transform. The numerical simulation and experiment have proved the validity of this method. The combination of the windowed Fourier transform and the wavelet transform makes the extracted phase more precise than other methods.
© 2007 Optical Society of America
OCIS Codes
(070.2590) Fourier optics and signal processing : ABCD transforms
(100.2650) Image processing : Fringe analysis
(100.5070) Image processing : Phase retrieval
(100.7410) Image processing : Wavelets
ToC Category:
Image Processing
History
Original Manuscript: September 8, 2006
Revised Manuscript: January 3, 2007
Manuscript Accepted: January 10, 2007
Published: April 23, 2007
Citation
Jingang Zhong and Huiping Zeng, "Multiscale windowed Fourier transform for phase extraction of fringe patterns," Appl. Opt. 46, 2670-2675 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-14-2670
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