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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 26, Iss. 8 — Apr. 15, 2001
  • pp: 494–496

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

Philip Birch, Sovira Tan, Rupert Young, Triantafillos Koukoulas, Frederic Claret-Tournier, David Budgett, and Chris Chatwin  »View Author Affiliations


Optics Letters, Vol. 26, Issue 8, pp. 494-496 (2001)
http://dx.doi.org/10.1364/OL.26.000494


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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

OCIS Codes
(070.4550) Fourier optics and signal processing : Correlators
(230.3720) Optical devices : Liquid-crystal devices

Citation
Philip Birch, Sovira Tan, Rupert Young, Triantafillos Koukoulas, Frederic Claret-Tournier, David Budgett, and Chris Chatwin, "Experimental implementation of a Wiener filter in a hybrid digital--optical correlator," Opt. Lett. 26, 494-496 (2001)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-26-8-494

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