Fringe-pattern demodulation using a parametric method based on differential evolution

Authors:
J. F. Jimenez;F. J. Cuevas;J. H. Sossa;L. E. Gomez
Affiliations:
Centro de Investigación en Computación-IPN, Unidad Profesional Adolfo-López Mateos, Zacatenco, México, DF, Mexico;Centro de Investigaciones en Óptica, León Gto., México;Centro de Investigación en Computación-IPN, Unidad Profesional Adolfo-López Mateos, Zacatenco, México, DF, Mexico;Centro de Investigación en Computación-IPN, Unidad Profesional Adolfo-López Mateos, Zacatenco, México, DF, Mexico
Venue:
MCPR'10 Proceedings of the 2nd Mexican conference on Pattern recognition: Advances in pattern recognition
Year:
2010

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Abstract

A parametric method to carry out fringe pattern demodulation by means of Differential Evolution is presented. The phase is approximated by the parametric estimation of an nth-grade polynomial so that no further unwrapping is required. On the other hand, a different parametric function can be chosen according to the prior knowledge of the phase behavior. A differential evolution is codified with the parameters of the function that estimates the phase. The differential evolution evolves until a fitness average threshold is obtained. The method can demodulate noisy fringe patterns and even a one-image closedfringe pattern successfully.