Color encoding of binary fringes for gamma correction in 3-D profiling |
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Authors: | Ayubi Gastón A Di Martino J Matías Alonso Julia R Fernández Ariel Flores Jorge L Ferrari José A |
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Affiliation: | Instituto de Física, Facultad de Ingeniería, UdelaR, J. Herrera y Reissig 565, Montevideo, Uruguay. ayubi@fing.edu.uy |
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Abstract: | Three-dimensional profiling by sinusoidal fringe projection using PSI-algorithms are distorted by the nonlinear response of digital cameras and commercial video projectors. To solve the problem, we present a fringe generation technique that consists of projecting and acquiring a temporal sequence of strictly binary color patterns, whose (adequately weighted) average leads to sinusoidal fringe patterns with the required number of bits, which allows for a reliable three-dimensional profile using a PSI-algorithm. Validation experiments are presented. |
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