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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: 325–332

Adaptive phase-shifting algorithm for temporal phase evaluation

Pablo D. Ruiz, Jonathan M. Huntley, and Guillermo H. Kaufmann  »View Author Affiliations


JOSA A, Vol. 20, Issue 2, pp. 325-332 (2003)
http://dx.doi.org/10.1364/JOSAA.20.000325


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Abstract

Most standard temporal-phase-shifting (TPS) algorithms evaluate the phase by computing a windowed Fourier transform (WFT) of the intensity signal at the carrier frequency of the system. However, displacement of the specimen during image acquisition may cause the peak of the transform to shift away from the carrier frequency, leading to phase errors and even unwrapping failure. We present a novel TPS method that searches for the peak of the WFT and evaluates the phase at that frequency instead of at the carrier frequency. The performance of this method is compared with that of standard algorithms by using numerical simulations. Experimental results from high-speed speckle interferometry studies of carbon fiber panels are also presented.

© 2003 Optical Society of America

OCIS Codes
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(120.4290) Instrumentation, measurement, and metrology : Nondestructive testing
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(120.6160) Instrumentation, measurement, and metrology : Speckle interferometry
(120.7280) Instrumentation, measurement, and metrology : Vibration analysis

History
Original Manuscript: April 17, 2002
Revised Manuscript: August 28, 2002
Manuscript Accepted: August 28, 2002
Published: February 1, 2003

Citation
Pablo D. Ruiz, Jonathan M. Huntley, and Guillermo H. Kaufmann, "Adaptive phase-shifting algorithm for temporal phase evaluation," J. Opt. Soc. Am. A 20, 325-332 (2003)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-20-2-325

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