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Proceedings Paper

Optical implementation of correlation filters for a photorefractive joint transform correlator
Author(s): Jerome Colin; Nicolas Landru; Vincent Laude; Henri J. Rajbenbach; Jean-Pierre Huignard
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Paper 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.

Paper Details

Date Published: 9 October 1998
PDF: 8 pages
Proc. SPIE 3466, Algorithms, Devices, and Systems for Optical Information Processing II, (9 October 1998); doi: 10.1117/12.326779
Show Author Affiliations
Jerome Colin, Thomson-CSF (France)
Nicolas Landru, Thomson-CSF (France)
Vincent Laude, Thomson-CSF (France)
Henri J. Rajbenbach, Thomson-CSF (Belgium)
Jean-Pierre Huignard, Thomson-CSF (France)

Published in SPIE Proceedings Vol. 3466:
Algorithms, Devices, and Systems for Optical Information Processing II
Bahram Javidi; Demetri Psaltis, Editor(s)

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