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

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Quiroga Mellado, Juan Antonio and Estrada, Julio C. and Vargas, Javier and Flores Moreno, Mauricio J. (2012) Windowed phase unwrapping using a first-order dynamic system following iso-phase contours. Applied Optics, 51 (31). pp. 7549-7553. ISSN 1559-128X

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Official URL: 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.


Item Type:Article
Additional Information:

© 2012 Optical Society of America.

Uncontrolled Keywords:Fringe-Pattern Analysis, Interferometry, Algorithms, Maps
Subjects:Sciences > Physics > Optics
ID Code:22185
Deposited On:10 Jul 2013 09:36
Last Modified:07 Feb 2014 10:42

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