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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 28, Iss. 18 — Sep. 15, 2003
  • pp: 1657–1659

Phase-shifting windowed Fourier ridges for determination of phase derivatives

Kemao Qian, Seah Hock Soon, and Anand Asundi  »View Author Affiliations


Optics Letters, Vol. 28, Issue 18, pp. 1657-1659 (2003)
http://dx.doi.org/10.1364/OL.28.001657


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Abstract

Determination of the phase or phase derivative from interferometric fringe patterns is an important task in optical interferometry. The use of wavelet ridges was recently shown to be an effective method for phase retrieval from a single fringe pattern. One necessary requirement in this method is the need for carrier frequency. In cases when carrier frequency is not available, the novel phase-shifting windowed Fourier ridges method can be used. Phase derivatives with the proper sign can be directly retrieved even in the presence of noise. An application for curvature determination from speckle shearographic fringes demonstrates the effectiveness of the method.

© 2003 Optical Society of America

OCIS Codes
(100.2650) Image processing : Fringe analysis
(100.5070) Image processing : Phase retrieval
(100.7410) Image processing : Wavelets
(120.5050) Instrumentation, measurement, and metrology : Phase measurement

Citation
Kemao Qian, Seah Hock Soon, and Anand Asundi, "Phase-shifting windowed Fourier ridges for determination of phase derivatives," Opt. Lett. 28, 1657-1659 (2003)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-28-18-1657

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