Simultaneous use of amplitude and phase to improve the validation process in a joint transform correlator |
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Authors: | John Fredy Barrera Juan Serna |
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Institution: | a Grupo de Óptica y Fotónica, Instituto de Física, Universidad de Antioquia, Medellín, Colombia b Centro de Investigaciones Ópticas (CONICET-CIC) and UID OPTIMO, Facultad Ingeniería, Universidad Nacional de La Plata, P.O. Box 124, La Plata (1900), Argentina |
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Abstract: | We present an alternative technique to enhance the discrimination performance in a JTC architecture, employed as a validation procedure. We define as complex objects those amplitude objects bonded to random phase masks. When using complex objects as reference inputs in a JTC optical validation system, correlation peak intensity and correlation peak shape become simultaneous key parameters to increase the discrimination ability of the system. Simulation results, comparing amplitude-only objects versus complex objects as inputs to the system, reveal the validity of our approach and show the sensitivity of the JTC architecture to the additional phase structures. |
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Keywords: | Optical processing Image processing Pattern recognition Correlators Joint transforms Fourier transforms |
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