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Proceedings Paper

Volume holographic wavelet correlators with multi-input channels
Author(s): Wenyi Feng; Yingbai Yan; Guofan Jin; Minxian Wu; Qingsheng He
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Paper Abstract

Optical correlators based on volume holographic associative storage and wavelet matched filtering generally have single input channel. In other words, they can only process one input image at a same time. Based on the fact that a volume holographic correlator is not a shift invariance system, novel volume holographic wavelet correlators with multi- input channels are proposed and constructed in this paper to improve the parallelism of processing. Without adding any component, the method of input plane shifting and the technique of angle multiplexing are combined besides the introduction of wavelet transform. With the correlators, several input images can be recognized simultaneously according to a same system output. Conditions of realizing multi-input channel processing are studied in this paper. The mechanism and prototype of the system are described in detail. The performance of the system in human face recognition is testified by experiment. Promising results are given.

Paper Details

Date Published: 1 October 1999
PDF: 8 pages
Proc. SPIE 3805, Photonic Devices and Algorithms for Computing, (1 October 1999); doi: 10.1117/12.363998
Show Author Affiliations
Wenyi Feng, Tsinghua Univ. (United States)
Yingbai Yan, Tsinghua Univ. (China)
Guofan Jin, Tsinghua Univ. (China)
Minxian Wu, Tsinghua Univ. (China)
Qingsheng He, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 3805:
Photonic Devices and Algorithms for Computing
Khan M. Iftekharuddin; Abdul Ahad Sami Awwal, Editor(s)

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