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Optical Engineering

Acousto-optic signal processing for real-time image recognition
Author(s): Perry A. Molley; K. Terry Stalker
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Paper Abstract

The experimental results from an acousto-optic image correlator are presented. The performance ofthis system, which is evaluated in terms of the peak-to-sidelobe ratio, is shown to be improved by subtracting off the signal-dependent bias terms. These bias terms can be optically generated using the same acousto-optic correlator. Structured background features in the input scene can also dramatically affect the correlation result. This paper suggests a novel implementation of the difference-squared error algorithm using a modified acousto-optic architecture that can discriminate better than conventional correlation in scenes with structured background features. Experimental results from real-time systems constructed in the laboratory are presented.

Paper Details

Date Published: 1 September 1990
PDF: 8 pages
Opt. Eng. 29(9) doi: 10.1117/12.55692
Published in: Optical Engineering Volume 29, Issue 9
Show Author Affiliations
Perry A. Molley
K. Terry Stalker

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