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Proceedings Paper

Binary joint Fourier transform correlator considerations
Author(s): Mark Andrew Waring; Jaye M. Waas
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Paper Abstract

Results of research into the performance of a Joint Transform correlator utilizing the binary magnetooptic spatial light modulator are discussed. Computer simulation and experimental correlation plane analyses are presented. Optical correlation performance is discussed, with emphasis on the JFTC's recognition capability in the presence of input noise and clutter. The JFTC suffers significantly more degradation in correlation SNR from the addition of input noise and clutter than the VanderLugt correlator using the same binary SLMs. When the JFTC and the VanderLugt architectures are compared using identical input patterns containing added noise and clutter, the correlation SNR is many times lower in the JFTC than in the VanderLugt. A Fourier plane thresholding technique which dramatically reduces the D.C. correlation intensity is also introduced. This technique achieves reduction in D.C. peak intensity of from 30 to over 80 percent, while affecting the correlation peak intensity by less than 5 percent. Conclusions on the potential for use of the JFTC in various pattern recognition applications are discussed.

Paper Details

Date Published: 1 September 1990
PDF: 12 pages
Proc. SPIE 1295, Real-Time Image Processing II, (1 September 1990); doi: 10.1117/12.21234
Show Author Affiliations
Mark Andrew Waring, Semetex Corp. (United States)
Jaye M. Waas, Semetex Corp. (United States)

Published in SPIE Proceedings Vol. 1295:
Real-Time Image Processing II
Richard D. Juday, Editor(s)

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