Optical implementation of optimal trade-off bipolar filters for the shadow-casting incoherent correlator

Vincent Laude; Jean-Pierre Huignard; Philippe Refregier

doi:10.1117/12.217645

28 August 1995 Optical implementation of optimal trade-off bipolar filters for the shadow-casting incoherent correlator

Vincent Laude, Jean-Pierre Huignard, Philippe Refregier

Proceedings Volume 2565, Optical Implementation of Information Processing; (1995) https://doi.org/10.1117/12.217645
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

We design an incoherent correlator based on the shadow casting principle, including a bipolar representation of correlation filters. This correlator is totally new to our knowledge, and is furthermore very simple and low cost, although it can not handle large resolution images. The bipolar technique allows us to represent any linear filter in the correlator. We demonstrate experimentally its efficiency in the case of optimal trade-off filters.

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Vincent Laude, Jean-Pierre Huignard, and Philippe Refregier "Optical implementation of optimal trade-off bipolar filters for the shadow-casting incoherent correlator", Proc. SPIE 2565, Optical Implementation of Information Processing, (28 August 1995); https://doi.org/10.1117/12.217645

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KEYWORDS

Image filtering

Optical correlators

Optical filters

Optimal filtering

Spatial light modulators

Signal to noise ratio

Electronic filtering

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