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Optical Engineering

Rotation-invariant phase-shifting joint transform correlator by use of circular harmonic expansion
Author(s): Zhaoqi Wang; Jiuhong Guan; Guoguang Mu; Rulian Fu
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Paper Abstract

The performance merits of the phase-shifting joint transform correlator (PSJTC) are evaluated based on the criteria of light efficiency and discrimination capability. The PSJTC is shown to possess much higher light efficiency (three orders of magnitude) and much better discrimination capability (three times with the selected images) than does the conventional joint transform correlator (JTC). The PSJTC is combined with the circular harmonic expansion to achieve a full rotationinvariant correlation with high light efficiency and high discrimination capability. Computer simulation results and 3-D computer plots are presented.

Paper Details

Date Published: 1 October 2000
PDF: 6 pages
Opt. Eng. 39(10) doi: 10.1117/1.1286417
Published in: Optical Engineering Volume 39, Issue 10
Show Author Affiliations
Zhaoqi Wang, Nankai Univ. (China)
Jiuhong Guan, Nankai Univ. (China)
Guoguang Mu, Nankai Univ. (China)
Rulian Fu, Nankai Univ. (China)


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