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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 4 — Feb. 1, 2012
  • pp: 413–421

Quality-guided orientation unwrapping for fringe direction estimation

Haixia Wang and Qian Kemao  »View Author Affiliations

Applied Optics, Vol. 51, Issue 4, pp. 413-421 (2012)

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Fringe patterns produced by various optical interferometric techniques encode information such as shape, deformation, and refractive index. Denoising and demodulation are two important procedures to retrieve information from a single closed fringe pattern. Various existing denoising and demodulation techniques require fringe direction/orientation during the processing. Fringe orientation is often easier to obtain but fringe direction is needed in some demodulation techniques. A quality-guided orientation unwrapping scheme is proposed to estimate direction from orientation. Two techniques, one based on windowed Fourier ridges and the other based on fringe gradient, are proposed for the quality-guided orientation unwrapping scheme. The direction qualities are compared for both simulated and experimental fringe patterns. Their application to demodulation technique is also given.

© 2012 Optical Society of America

OCIS Codes
(100.2000) Image processing : Digital image processing
(100.2650) Image processing : Fringe analysis
(100.2960) Image processing : Image analysis

ToC Category:
Image Processing

Original Manuscript: June 29, 2011
Revised Manuscript: September 5, 2011
Manuscript Accepted: September 5, 2011
Published: January 24, 2012

Haixia Wang and Qian Kemao, "Quality-guided orientation unwrapping for fringe direction estimation," Appl. Opt. 51, 413-421 (2012)

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