Object-enhanced optical correlation

Marija S. Scholl; Michael S. Shumate; Gabriel Udomkesmalee

doi:10.1117/12.49707

1 November 1991 Object-enhanced optical correlation

Marija S. Scholl, Michael S. Shumate, Gabriel Udomkesmalee

Proceedings Volume 1564, Optical Information Processing Systems and Architectures III; (1991) https://doi.org/10.1117/12.49707
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

A major drawback of optical correlator systems is the poor quality of correlation signals. Background noise is one of the many sources of false correlation peaks. However, by reconstructing an input scene with the object's amplitude function, an object-enhanced scene - used as input to the optical correlators - (with respect to background) can be obtained. Thus, the optical correlation of this enhanced image improves the signal-to-noise ratio in the correlation image. Furthermore, construction of a filter plane mask that permits simultaneous scene enhancement and cross-correlation operations is described. Experimental results demonstrate the practicality of this approach.

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Marija S. Scholl, Michael S. Shumate, and Gabriel Udomkesmalee "Object-enhanced optical correlation", Proc. SPIE 1564, Optical Information Processing Systems and Architectures III, (1 November 1991); https://doi.org/10.1117/12.49707

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KEYWORDS

Optical signal processing

Optical correlators

Image enhancement

Phase only filters

Fourier transforms

Image filtering

Optical filters

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