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Optics Letters

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  • 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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References

  1. R. C. D. Young, S. Huang, G. Le, T. Koukoulas, M. I. Heywood, D. M. Budgett, and C. R. Chatwin, Proc. SPIE 3715, 16 (1999).
  2. D. M. Budgett, M. I. Heywood, R. C. D. Young, C. R. Chatwin, S. Huang, P. Birch, M. Farsari, and C. D. Bradfield, Microprocessors Microsystems 23, 501 (1999).
  3. R. C. D. Young, S. Huang, G. Li, T. Koukoulas, M. I. Heywood, D. M. Budgett, and C. R. Chatwin, Asian J. Phys. 8, 239 (1999).
  4. R. C. D. Young, F. Claret-Tournier, G. Li, P. M. Birch, T. Koukoulas, D. M. Budgett, and C. R. Chatwin, Proc. SPIE 4043, 25 (2000).
  5. S. Tan, R. C. D. Young, D. M. Budgett, J. D. Richardson, and C. R. Chatwin, Opt. Commun. 182, 83 (2000).
  6. P. M. Birch, R. C. D. Young, D. M. Budgett, and C. R. Chatwin, Opt. Commun. 175, 347 (2000).
  7. P. M. Birch, R. Young, D. Budgett, and C. Chatwin, Opt. Lett. 25, 1013 (2000).

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