Acousto-optic signal processing for real-time image recognition

Perry A. Molley; K. Terry Stalker

doi:10.1117/12.55692

1 September 1990 Acousto-optic signal processing for real-time image recognition

Perry A. Molley, K. Terry Stalker

Author Affiliations +

Optical Engineering, Vol. 29, Issue 9, (September 1990). https://doi.org/10.1117/12.55692

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.

Citation Download Citation

Perry A. Molley and K. Terry Stalker "Acousto-optic signal processing for real-time image recognition," Optical Engineering 29(9), (1 September 1990). https://doi.org/10.1117/12.55692

Published: 1 September 1990

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