Experimental Implementation of a Wiener Filter in a Hybrid Digital/Optical Correlator

Birch, Philip, Tan, Sovira, Young, Rupert, Koukoulas, Triantafillos, Claret-Tournier, Frederic, Budgett, David and Chatwin, Chris (2001) Experimental Implementation of a Wiener Filter in a Hybrid Digital/Optical Correlator. Optics Letters, 26 (8). pp. 494-496. ISSN 0146-9592

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Abstract

We present the implementation of a clutter-tolerant f 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.

Item Type: Article
Additional Information: This paper is a first in that it was the first experimental implementation of my previously proposed pattern recognition Weiner filter which was implemented using fully complex optical modulation EPSRC-ROPA-GR/L/71230. Thus it is the first optical-hardware implementation of this filter and significantly improved the performance of hybrid-systems by allowing explicit models of background-clutter to be incorporated into the filter and so it greatly improved detection performance. This was one of the first uses of the Boulder Non-Linear Systems analogue-backplane smectic-A* liquid-crystal based spatial-light-modulator which is now a successful product. BNS-Inc, S.Serati-001-303-604-0077 used this paper to help market their SLM.
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Depositing User: Philip Birch
Date Deposited: 06 Feb 2012 19:52
Last Modified: 30 Mar 2012 11:40
URI: http://sro.sussex.ac.uk/id/eprint/22653
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