Abstract

We present the implementation of a clutter-tolerant filter in a hybrid correlator system. Wiener filters were mapped with a complex encoding technique onto a smectic $A^{*}$ liquid-crystal spatial light modulator (SLM). The technique overcomes the problem of representing high-dynamic-range data on SLM’s that have limited modulation capabilities. It also provides a compact image recognition system that is robust enough for many real-world applications. Experimental results are presented.

© 2001 Optical Society of America

Experimental systems implementation of a hybrid optical–digital correlator

James H. Sharp, Nick E. MacKay, Pei C. Tang, Ian A. Watson, Brian F. Scott, David M. Budgett, Chris R. Chatwin, Rupert C. D. Young, Sylvie Tonda, Jean-Pierre Huignard, Tim G. Slack, Neil Collings, Ali-Reza Pourzand, Marcus Duelli, Aldo Grattarola, and Carlo Braccini
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