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Modulo 2π fringe orientation angle estimation by phase unwrapping with a regularized phase tracking algorithm



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Quiroga Mellado, Juan Antonio and Servín Guirado, Manuel and Cuevas de la Rosa, Francisco Javier (2002) Modulo 2π fringe orientation angle estimation by phase unwrapping with a regularized phase tracking algorithm. Journal of the Optical Society of America A-Optics Image Science And Vision, 19 (8). pp. 1524-1531. ISSN 0740-3232

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Official URL: http://dx.doi.org/10.1364/JOSAA.19.001524



The fringe orientation angle provides useful information for many fringe-pattern-processing techniques. From a single normalized fringe pattern (background suppressed and modulation normalized), the fringe orientation angle can be obtained by computing the irradiance gradient and performing a further aretangent computation. Because of the 180° ambiguity of the fringe direction, the orientation angle computed from the gradient of a single fringe pattern can be determined only modulo pi. Recently, several studies have shown that a reliable determination of the fringe orientation angle modulo 2π is a key point for a robust demodulation of the phase from a single fringe pattern. We present an algorithm for the computation of the modulo 2π fringe orientation angle by unwrapping the orientation angle obtained from the gradient computation with a regularized phase tracking method. Simulated as well as experimental results are presented.

Item Type:Article
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© 2002 Optical Society of America.
We are grateful for the financial support of this work given by the European Union under project INDUCE, Contract BRPR-CT97-0805, and by the National Council for Science and Technology (CONACYT), Mexico, under project PROSUVE, contract PR48/01-9858.

Uncontrolled Keywords:Demodulation
Subjects:Sciences > Physics > Optics
ID Code:23125
Deposited On:14 Oct 2013 09:08
Last Modified:07 Feb 2014 10:57

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