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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 36, Iss. 32 — Nov. 10, 1997
  • pp: 8391–8396

Robust procedure for fringe analysis

Mariano Rivera, Ramon Rodriguez-Vera, and Jose L. Marroquin  »View Author Affiliations


Applied Optics, Vol. 36, Issue 32, pp. 8391-8396 (1997)
http://dx.doi.org/10.1364/AO.36.008391


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Abstract

A robust procedure for analyzing fringe patterns obtained from speckle interferometric techniques is proposed. The fringes generally are observed only in a region <i>S</i> of a rectangular lattice <i>L</i>. We give a method for computing (from <i>S</i>) the region <i>R</i>, where the unwrapped phase is to be computed; this computation is done by use of a morphological filter (in particular, a closing filter). We then use a fast-unwrapping algorithm to compute the phase: a preconditioned conjugate-gradient algorithm that uses the discrete Fourier transform.

© 1997 Optical Society of America

Citation
Mariano Rivera, Ramon Rodriguez-Vera, and Jose L. Marroquin, "Robust procedure for fringe analysis," Appl. Opt. 36, 8391-8396 (1997)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-36-32-8391


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References

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