9 October 1998 Optical implementation of correlation filters for a photorefractive joint transform correlator
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Abstract
An optical photorefractive joint transform correlator (PRJTC) was built using a twisted liquid crystal spatial light modulator in the input plane to display the images and a photorefractive crystal in the Fourier plane to perform the nonlinear correlation. We present here new correlation filters to optimize the correlation. There filters are correlated with the scene instead of the simple reference. To calculated these filters, we introduce two characteristics of the setup to optimize the filters: the nonlinearity of the photorefractive crystal, the coding domain of the displaying device.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jerome Colin, Nicolas Landru, Vincent Laude, Henri J. Rajbenbach, and Jean-Pierre Huignard "Optical implementation of correlation filters for a photorefractive joint transform correlator", Proc. SPIE 3466, Algorithms, Devices, and Systems for Optical Information Processing II, (9 October 1998); doi: 10.1117/12.326779; https://doi.org/10.1117/12.326779
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