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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 3 — Feb. 1, 2012
  • pp: 443–445

Two-step demodulation based on the Gram–Schmidt orthonormalization method

J. Vargas, J. Antonio Quiroga, C. O. S. Sorzano, J. C. Estrada, and J. M. Carazo  »View Author Affiliations


Optics Letters, Vol. 37, Issue 3, pp. 443-445 (2012)
http://dx.doi.org/10.1364/OL.37.000443


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Abstract

This Letter presents an efficient, fast, and straightforward two-step demodulating method based on a Gram–Schmidt (GS) orthonormalization approach. The phase-shift value has not to be known and can take any value inside the range (0,2π), excluding the singular case, where it corresponds to π. The proposed method is based on determining an orthonormalized interferogram basis from the two supplied interferograms using the GS method. We have applied the proposed method to simulated and experimental interferograms, obtaining satisfactory results. A complete MATLAB software package is provided at http://goo.gl/IZKF3.

© 2012 Optical Society of America

OCIS Codes
(100.2650) Image processing : Fringe analysis
(100.5070) Image processing : Phase retrieval

ToC Category:
Image Processing

History
Original Manuscript: October 5, 2011
Revised Manuscript: December 13, 2011
Manuscript Accepted: December 14, 2011
Published: February 1, 2012

Citation
J. Vargas, J. Antonio Quiroga, C. O. S. Sorzano, J. C. Estrada, and J. M. Carazo, "Two-step demodulation based on the Gram–Schmidt orthonormalization method," Opt. Lett. 37, 443-445 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-3-443

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