Experimental implementation of a Wiener filter in a hybrid digital--optical correlator

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&...

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Bibliographic Details
Published inOptics letters Vol. 26; no. 8; p. 494
Main Authors Birch, P, Tan, S, Young, R, Koukoulas, T, Claret-Tournier, F, Budgett, D, Chatwin, C
Format Journal Article
LanguageEnglish
Published United States 15.04.2001
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Summary: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.
ISSN:0146-9592
DOI:10.1364/OL.26.000494