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Proceedings Paper

Optical Associative Processors With Controlled Nonlinearity In The Fo'urier Domain
Author(s): Bahram Javidi
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Paper Abstract

Two types of optical associative memory for two-dimensional image retrieval using nonlinear correlation is described. The product between the input image and the stored images is obtained by nonlinear correlation technique which has a superior performance compared with the conventional optical correlation techniques in the areas of the light efficiency, the correlation peak to sidelobe ratio and correlation spot size. We show that for some noisy inputs, it is necessary to use nonlinearity at the Fourier plane to improve the correlation SNR. Using this technique, better quality images can be reconstructed and the need for optical gain and the optical feedback may be eliminated.

Paper Details

Date Published: 5 February 1990
PDF: 9 pages
Proc. SPIE 1151, Optical Information Processing Systems and Architectures, (5 February 1990); doi: 10.1117/12.962240
Show Author Affiliations
Bahram Javidi, University of Connecticut (United States)

Published in SPIE Proceedings Vol. 1151:
Optical Information Processing Systems and Architectures
Bahram Javidi, Editor(s)

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