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Optical Engineering

Optimization of the polychromatic discrimination capability in multichannel pattern recognition
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Paper Abstract

We present the improvement of color pattern recognition by the optimization of a new parameter, the polychromatic discrimination capability. We use the polychromatic correlation obtained as the addition of the three correlation intensities obtained with the RGB components of the input color scene and the corresponding components of the color target. The polychromatic discrimination capability is defined in this fused correlation plane. We propose a method to optimize this performance parameter, which represents a global criterion for the optimization of the polychromatic correlation. The approach involves the design of regions of support to be used with the matched phase-only filters to optimize the polychromatic discrimination. We present simulation results illustrating the improvements obtained after the optimization process. We also include experimental results obtained with an optical real-time correlator that uses two spatial light modulators. Experimental data confirm the numerical results and show the capacity of the proposed technique to improve color pattern recognition.

Paper Details

Date Published: 1 December 2002
PDF: 10 pages
Opt. Eng. 41(12) doi: 10.1117/1.1517576
Published in: Optical Engineering Volume 41, Issue 12
Show Author Affiliations
Abdelaziz Attaleb, Univ. Autonoma de Barcelona (Spain)
Esmail Ahouzi, Univ. Autonoma de Barcelona (Spain)
Juan Campos, Univ. Autonoma de Barcelona (Spain)
Ignacio Soriano Moreno, Univ. Miguel Hernandez (Spain)
Maria Josefa Yzuel, Univ. Autonoma de Barcelona (Spain)

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