Fringe normalization by using an interpolation algorithm

Francisco Javier Cuevas; Juan Humberto Sossa Azuela; G. Garnica; Juan A. Rayas; M. Carpio; O. Gonzalez

doi:10.1117/12.611686

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14 February 2005 Fringe normalization by using an interpolation algorithm

Francisco Javier Cuevas, Juan Humberto Sossa Azuela, G. Garnica, Juan A. Rayas, M. Carpio, O. Gonzalez

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Proceedings Volume 5776, Eighth International Symposium on Laser Metrology; (2005) https://doi.org/10.1117/12.611686
Event: Eighth International Conference on Laser Metrology, 2005, Merida, Mexico

Abstract

A fringe normalization procedure is presented in this paper. The main idea of the computer algorithm is to normalize the fringe pattern using spline interpolation functions. To achieve this, two splines are fitted using the maximum and minimum irradiance peaks detected over each fringe image line. Then, each pixel in the fringe image is interpolated and normalized by using of the values of the max and min splines. The fringe contrast is enhanced with an error around 1%. Preliminary results are presented.

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Francisco Javier Cuevas, Juan Humberto Sossa Azuela, G. Garnica, Juan A. Rayas, M. Carpio, and O. Gonzalez "Fringe normalization by using an interpolation algorithm", Proc. SPIE 5776, Eighth International Symposium on Laser Metrology, (14 February 2005); https://doi.org/10.1117/12.611686

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