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Real-time pattern recognition by vanderlugt correlator using amplitude and phase modulation properties of the epson Liquid-Crystal TV

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Abstract

We have built an optical VanderLugt-type correlator that uses two Epson liquid crystal televisions (LCTVs) separately generating the amplitude and phase modulation properties. The input scene is displayed in amplitudemostly regime on the first LCTV. Thereafter a phase-only filter with a different level of phase quantization is addressed in phase-mostly regime on the second LCTV. To characterize this device, the phase and amplitude modulations were experimentally measured and investigated in pattern recognition application where the grey-level input scenes and multilevel kinoforms are displayed on the LCTVs.

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Author notes

  1. Christophe Gorecki

    Present address: LIMMS/CNRS, Institute of Industrial Science, University of Tokyo, 7-22-1, Roppongi, Minato-ku, 106, Tokyo, Japan

Authors and Affiliations

  1. Laboratoire d’Optique P.M. Duffieux, (URA CNRS 214), Université de Franche-Comté, 16 Route de Gray, 25030, Besançon cedex, France

    Christophe Gorecki, Bertrand Trolard & Luc Oriat

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  1. Christophe Gorecki
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  2. Bertrand Trolard
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  3. Luc Oriat
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Gorecki, C., Trolard, B. & Oriat, L. Real-time pattern recognition by vanderlugt correlator using amplitude and phase modulation properties of the epson Liquid-Crystal TV. Optical Review 3, 171–176 (1996). https://doi.org/10.1007/BF02931715

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  • DOI: https://doi.org/10.1007/BF02931715

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