Publication: Regularized phase tracking technique for demodulation of isochromatics from a single tricolour image
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2002-01
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IOP Publishing Ltd.
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Abstract
In this work we propose a robust fringe demodulation technique applied to the analysis of tricolour isochromatic fringe patterns produced in photoelasticity. The method used is a regularized phase tracking (RPT) algorithm, which takes into account the different information contained in the three bands of the colour image obtained with an RGB-CCD camera. Automatic determination of the zero-order isochromatic and the area of interest, the use of a discrete fluorescent illumination and the use of the RPT configures a robust method for automatic demodulation of isochromatic fringe patterns. The performance of the method is discussed and experimental results are presented.
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© 2002 IOP Publishing Ltd.
We wish to thank the European Union, project INDUCE, BRPR-CT97-0805, for financial support of this work. MS and JLM were supported in part by grants from Conacyt, México.
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