Optical correlator using binary phase-only filters implemented with hybrid TV/liquid-crystal spatial light modulators

V. V. Dadeshidze; Igor N. Kompanets; I. L. Lindunen; Anatoly A. Vasiliev

doi:10.1117/12.169363

15 March 1994 Optical correlator using binary phase-only filters implemented with hybrid TV/liquid-crystal spatial light modulators

V. V. Dadeshidze, Igor N. Kompanets, I. L. Lindunen, Anatoly A. Vasiliev

Author Affiliations +

Proceedings Volume 2065, Optics, Illumination, and Image Sensing for Machine Vision VIII; (1994) https://doi.org/10.1117/12.169363
Event: Optical Tools for Manufacturing and Advanced Automation, 1993, Boston, MA, United States

Abstract

A hybrid device which consists of a liquid crystal spatial light modulator (LC SLM) connected through fiber optics to a TV screen, being interfaced to a desk-top computer, is used for generating binary phase-only spatial filters (BPOFs) in a real-time TV/optical correlator. An adaptive optical/digital correlator with a BPOF and nonlinear feedback is described. The LC SLM phase-error correction is implemented using an iterative algorithm. The BPOFs with improved discrimination ability and circular harmonic BPOFs with spatial carrier are generated with the system.

Citation Download Citation

V. V. Dadeshidze, Igor N. Kompanets, I. L. Lindunen, and Anatoly A. Vasiliev "Optical correlator using binary phase-only filters implemented with hybrid TV/liquid-crystal spatial light modulators", Proc. SPIE 2065, Optics, Illumination, and Image Sensing for Machine Vision VIII, (15 March 1994); https://doi.org/10.1117/12.169363

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