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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 20, Iss. 2 — Feb. 1, 2003
  • pp: 240–247

Least-squares phase estimation with multiple parameters in phase-shifting electronic speckle pattern interferometry

Hae Young Yun, Chung Ki Hong, and Seok Won Chang  »View Author Affiliations


JOSA A, Vol. 20, Issue 2, pp. 240-247 (2003)
http://dx.doi.org/10.1364/JOSAA.20.000240


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Abstract

We have developed an accurate and robust phase-estimation method in phase-shifting electronic speckle pattern interferometry. Unlike other methods that assume a constant phase within a fitting window, our method treats the phase variation with a gradient. A cost function that can utilize the information of pixel positions is formulated on the basis of a least-squares criterion. Powell’s iteration method is applied to it to derive the phase and its gradient. An automatic consistency-checking routine and an algorithm that improves the initial guess of the iteration are developed for severe situations with large noise and steep phase variations.

© 2003 Optical Society of America

OCIS Codes
(030.6140) Coherence and statistical optics : Speckle
(100.5070) Image processing : Phase retrieval
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis

History
Original Manuscript: May 14, 2002
Revised Manuscript: August 12, 2002
Manuscript Accepted: August 12, 2002
Published: February 1, 2003

Citation
Hae Young Yun, Chung Ki Hong, and Seok Won Chang, "Least-squares phase estimation with multiple parameters in phase-shifting electronic speckle pattern interferometry," J. Opt. Soc. Am. A 20, 240-247 (2003)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-20-2-240

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