12 October 1988 Performance Of A Bipolar Nonlinear Correlator
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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.
© (1988) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Bahram Javidi, Bahram Javidi, Chung-Jung Kuo, Chung-Jung Kuo, Souheil F. Odeh, Souheil F. Odeh, } "Performance Of A Bipolar Nonlinear Correlator", Proc. SPIE 0956, Piece Recognition and Image Processing, (12 October 1988); doi: 10.1117/12.947696; https://doi.org/10.1117/12.947696
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