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Proceedings Paper

Filtering techniques for optical pattern recognition
Author(s): Philippe Refregier
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Paper Abstract

Optical pattern recognition and in particularly optical correlation has been the subject of intensive research for many years. The basic principle consists of the comparison of a reference image with the scene to analyze. The potential advantage of optical technologies is their ability to determine the conelation function very rapidly. Most of the research effort has concentrated on technology, and particularly on the spatial light modulators (SLM) which enable to encode the reference and the input images on a coherent optical beam and on the detectors. The recent availability of efficient SLM's and fast detectors has allowed the realization of different [1,2,3] optical correlator demonstrators and the question of their practical fields of applications becomes more stringent.

Paper Details

Date Published: 19 July 1999
PDF: 2 pages
Proc. SPIE 3749, 18th Congress of the International Commission for Optics, (19 July 1999); doi: 10.1117/12.354760
Show Author Affiliations
Philippe Refregier, Ecole Nationale Superieure de Physique de Marseille (France)


Published in SPIE Proceedings Vol. 3749:
18th Congress of the International Commission for Optics
Alexander J. Glass; Joseph W. Goodman; Milton Chang; Arthur H. Guenther; Toshimitsu Asakura, Editor(s)

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