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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 21 — Jul. 20, 2008
  • pp: 3954–3961

Adaptive asynchronous algorithm for fringe pattern demodulation

J. A. Gómez-Pedrero, J. A. Quiroga, and M. Servín  »View Author Affiliations


Applied Optics, Vol. 47, Issue 21, pp. 3954-3961 (2008)
http://dx.doi.org/10.1364/AO.47.003954


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Abstract

We present a spatial adaptive asynchronous algorithm for fringe pattern demodulation. The proposed algorithm is based on the standard five-step asynchronous method with the one modification that we select the best sample spacing for each point of the fringe pattern. As we show, the frequency response of any asynchronous method depends on the sample spacing. This interesting behavior is used to select the best sample spacing as the one that gives the biggest response for each location. The overall result is a spatial demodulation algorithm with an improved frequency response compared to the existing ones. We show the feasibility of the proposed method with theoretical analysis as well as experimental results.

© 2008 Optical Society of America

OCIS Codes
(100.2650) Image processing : Fringe analysis
(120.4120) Instrumentation, measurement, and metrology : Moire' techniques
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(120.5410) Instrumentation, measurement, and metrology : Polarimetry

ToC Category:
Image Processing

History
Original Manuscript: March 27, 2008
Revised Manuscript: May 23, 2008
Manuscript Accepted: June 22, 2008
Published: July 17, 2008

Citation
J. A. Gómez-Pedrero, J. A. Quiroga, and M. Servín, "Adaptive asynchronous algorithm for fringe pattern demodulation," Appl. Opt. 47, 3954-3961 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-21-3954

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