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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 31 — Nov. 1, 2012
  • pp: 7549–7553

Windowed phase unwrapping using a first-order dynamic system following iso-phase contours

Julio C. Estrada, Javier Vargas, J. Mauricio Flores-Moreno, and J. Antonio Quiroga  »View Author Affiliations


Applied Optics, Vol. 51, Issue 31, pp. 7549-7553 (2012)
http://dx.doi.org/10.1364/AO.51.007549


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Abstract

In this work, we show a windowed phase-unwrapping technique that uses a first-order dynamic system and scans the phase following its iso-phase contours. In previous works, we have shown that low-pass first-order dynamic systems are very robust and useful in phase-unwrapping problems. However, it is well known that all phase-unwrapping methods have a minimum signal-to-noise ratio that they tolerate. This paper shows that scanning the phase within local windows and using a path following strategy, the first-order unwrapping method increases its tolerance to noise. In this way, using the improved approach, we can unwrap phase maps where the basic dynamic phase-unwrapping system fails. Tests and results are given, as well as the source code in order to show the performance of the proposed method.

© 2012 Optical Society of America

OCIS Codes
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(100.5088) Image processing : Phase unwrapping

ToC Category:
Image Processing

History
Original Manuscript: August 7, 2012
Manuscript Accepted: September 18, 2012
Published: October 24, 2012

Citation
Julio C. Estrada, Javier Vargas, J. Mauricio Flores-Moreno, and J. Antonio Quiroga, "Windowed phase unwrapping using a first-order dynamic system following iso-phase contours," Appl. Opt. 51, 7549-7553 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-31-7549

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