Optical implementation of correlation filters for a photorefractive joint transform correlator

Jerome Colin; Nicolas Landru; Vincent Laude; Henri J. Rajbenbach; Jean-Pierre Huignard

doi:10.1117/12.326779

9 October 1998 Optical implementation of correlation filters for a photorefractive joint transform correlator

Jerome Colin, Nicolas Landru, Vincent Laude, Henri J. Rajbenbach, Jean-Pierre Huignard

Proceedings Volume 3466, Algorithms, Devices, and Systems for Optical Information Processing II; (1998) https://doi.org/10.1117/12.326779
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

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.

Citation Download Citation

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); https://doi.org/10.1117/12.326779

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available