Abstract

Simple patterns consisting of three spots (V and Γ) have been recognized by dividing, shifting, and recombining beams onto bistable ZnS interference filters. This experiment demonstrates AND-gate operation, cascading, and a moderate amount of parallelism, but a laser power of several watts was required and the response times were several milliseconds. An associative memory for fingerprint identification has been constructed using a VanderLugt correlator and an interference filter as a reflective thresholding device.

© 1988 Optical Society of America

Performance analysis of associative memories with nonlinearities in the correlation domain

R. J. Marks, L. E. Atlas, J. J. Choi, S. Oh, K. F. Cheung, and D. C. Park
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Evaluation and improvement of associative memory for pattern recognition

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Holographic associative memory with nonlinearities in the correlation domain

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