Performance Of A Bipolar Nonlinear Correlator

Bahram Javidi; Chung-Jung Kuo; Souheil F. Odeh

doi:10.1117/12.947696

12 October 1988 Performance Of A Bipolar Nonlinear Correlator

Bahram Javidi, Chung-Jung Kuo, Souheil F. Odeh

Author Affiliations +

Proceedings Volume 0956, Piece Recognition and Image Processing; (1988) https://doi.org/10.1117/12.947696
Event: SPIE International Symposium on Optical Engineering and Industrial Sensing for Advance Manufacturing Technologies, 1988, Dearborn, MI, United States

Abstract

A joint Fourier transform image correlator that uses a binary spatial light modulator at the Fourier plane is presented. In this system, the Fourier transforms interference intensity is thresholded to only two values so that a binary spatial light modulator can be used to read-out the interference intensity. The performance of the correlator introduced here is compared to the classical joint transform correlator in the following areas: correlation peak, correlation peak to sidelobe ratio, correlation bandwidth, and discrimination. We show that the bipolar Fourier transforms interference intensity can result in a higher correlation intensity and a better defined correlation spot than the classical joint transform correlator. Computer simulation is used to test the correlators and the three dimensional plots of the autocorrelation and cross-correlation functions are presented and discussed.

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Bahram Javidi, Chung-Jung Kuo, and Souheil F. Odeh "Performance Of A Bipolar Nonlinear Correlator", Proc. SPIE 0956, Piece Recognition and Image Processing, (12 October 1988); https://doi.org/10.1117/12.947696

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