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Applied Optics

Applied Optics


  • Vol. 38, Iss. 29 — Oct. 10, 1999
  • pp: 6129–6135

Optical implementation of segmented composite filtering

Ayman Al Falou, Gilles Keryer, and Jean-Louis de Bougrenet de la Tocnaye  »View Author Affiliations

Applied Optics, Vol. 38, Issue 29, pp. 6129-6135 (1999)

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We investigate possible performance improvements of coherent optical correlators by using an appropriate filter design. Multidecision strategies are often required in high-level image-processing tasks. For an optical system characterized by a given space–bandwidth product we show that the filter design plays a crucial role in satisfying both system and processing requirements, with respect to the optimization of the encoding capacity. This leads us to the definition of segmented composite filtering, which is discussed in terms of processing performance. This filtering is assessed experimentally in the case of a face-recognition problem.

© 1999 Optical Society of America

OCIS Codes
(070.2580) Fourier optics and signal processing : Paraxial wave optics
(070.2590) Fourier optics and signal processing : ABCD transforms
(070.4550) Fourier optics and signal processing : Correlators
(070.6760) Fourier optics and signal processing : Talbot and self-imaging effects

Original Manuscript: March 1, 1999
Revised Manuscript: July 12, 1999
Published: October 10, 1999

Ayman Al Falou, Gilles Keryer, and Jean-Louis de Bougrenet de la Tocnaye, "Optical implementation of segmented composite filtering," Appl. Opt. 38, 6129-6135 (1999)

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