Design and experimental demonstration of a reduced-resolution optical correlator

Paul C. Miller

doi:10.1117/12.279442

24 October 1997 Design and experimental demonstration of a reduced-resolution optical correlator

Paul C. Miller

Proceedings Volume 3159, Algorithms, Devices, and Systems for Optical Information Processing; (1997) https://doi.org/10.1117/12.279442
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

Several designs for a reduced resolution optical correlator are proposed. The design of reduced resolution filters by multiresolution wavelet analysis (MWA) or by downsampling is extended to spatial light modular with fill-factors less than one. A reduced resolution optical correlator is constructed based on one of the above designs, and a comparison of MWA and downsampling filters is performed for different size targets. The experimental results show good qualitative agreement with simulation; however, the first-order correlation peaks were found to be greater for the experimental results. A possible reason for this is suggested and a new technique for measuring the fill-factor is proposed.

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Paul C. Miller "Design and experimental demonstration of a reduced-resolution optical correlator", Proc. SPIE 3159, Algorithms, Devices, and Systems for Optical Information Processing, (24 October 1997); https://doi.org/10.1117/12.279442

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KEYWORDS

Spatial light modulators

Optical correlators

Optical filters

Fourier transforms

Image resolution

Optical resolution

Image filtering

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