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Proceedings Paper

Optical enhancements of joint-Fourier-transform correlator by image subtraction
Author(s): Osvaldo Perez; Mohammad A. Karim
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Paper Abstract

The performance of the joint Fourier transform correlation (JFTC) algorithm is improved by enhancing the frequency domain horizontal edges for the case where the reference and input scene are in the lower half and upper half, respectively, of the space domain. The enhancement of frequency domain horizontal edges eliminates any vertical edges which corresponds to cross correlation between objects in the input scene. Consequently the correlation peak intensity between similar objects is increased and the cross correlation peaks are reduced.

Paper Details

Date Published: 1 August 1991
PDF: 10 pages
Proc. SPIE 1471, Automatic Object Recognition, (1 August 1991); doi: 10.1117/12.44884
Show Author Affiliations
Osvaldo Perez, Univ. of Dayton (United States)
Mohammad A. Karim, Univ. of Dayton (United States)

Published in SPIE Proceedings Vol. 1471:
Automatic Object Recognition
Firooz A. Sadjadi, Editor(s)

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