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Optical Engineering

Joint wavelet transform correlator with power spectrum subtraction for improved performance
Author(s): Sheng Zhong; Shutian Liu; Jiuxing Jiang; Chunfei Li
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Paper Abstract

Power spectrum subtraction is introduced into the joint wavelet transform correlator to improve its performance. Because the joint wavelet transform correlator is not a matched recognition, its performance is quite poor when the conventional joint-transform correlator is employed. By subtracting the power spectra of the target image and the reference image, the power spectrum subtraction technique may greatly improve the joint wavelet transform correlator. In comparison with the conventional joint wavelet transform correlator, the new correlator has narrower dc output, bigger space-bandwidth product, stronger wavelet transform output, and greater background-noise resistance. Both theoretical analysis and computer simulation verify its efficiency.

Paper Details

Date Published: 1 October 1997
PDF: 6 pages
Opt. Eng. 36(10) doi: 10.1117/1.601505
Published in: Optical Engineering Volume 36, Issue 10
Show Author Affiliations
Sheng Zhong, Harbin Institute of Technology (China)
Shutian Liu, Harbin Institute of Technology (China)
Jiuxing Jiang, Harbin Univ. of Science and Technology (China)
Chunfei Li, Harbin Institute of Technology (China)

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