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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 45, Iss. 34 — Dec. 1, 2006
  • pp: 8722–8732

Spatial carrier fringe pattern demodulation by use of a two-dimensional continuous wavelet transform

Munther A. Gdeisat, David R. Burton, and Michael J. Lalor  »View Author Affiliations


Applied Optics, Vol. 45, Issue 34, pp. 8722-8732 (2006)
http://dx.doi.org/10.1364/AO.45.008722


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Abstract

A novel technique that uses a fan two-dimensional (2D) continuous wavelet transform (CWT) to phase demodulate fringe patterns is proposed. The fan 2D CWT algorithm is tested by using computer generated and real fringe patterns. The result of this investigation reveals that the 2D CWT technique is capable of successfully demodulating fringe patterns. The proposed algorithm demodulates fringe patterns without the requirement of removing their background illumination prior to the demodulation process. Also, the algorithm is exceptionally robust against speckle noise. The performance of the 2D CWT technique in fringe pattern demodulation is compared with that of the 1D CWT algorithms. This comparison indicates that the 2D CWT outperforms its 1D counterpart for this application.

© 2006 Optical Society of America

OCIS Codes
(100.2650) Image processing : Fringe analysis
(100.5070) Image processing : Phase retrieval
(100.7410) Image processing : Wavelets
(120.6160) Instrumentation, measurement, and metrology : Speckle interferometry

ToC Category:
Image Processing

History
Original Manuscript: November 14, 2005
Revised Manuscript: May 1, 2006
Manuscript Accepted: June 21, 2006

Citation
Munther A. Gdeisat, David R. Burton, and Michael J. Lalor, "Spatial carrier fringe pattern demodulation by use of a two-dimensional continuous wavelet transform," Appl. Opt. 45, 8722-8732 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-34-8722

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