Multiple-input joint transform correlator for wavelet feature extraction

被引：9
|
作者：
Kozaitis, SP
Getbehead, MA
机构：
[1] Florida Inst Technol, Div Elect Comp Sci & Engn, Melbourne, FL 32901 USA
[2] Rome Lab, Photon Ctr, Griffiss AFB, NY 13441 USA
来源：
OPTICAL ENGINEERING | 1998年 / 37卷 / 04期
关键词：
correlator; feature extraction; joint transform correlator; optical pattern recognition; wavelet transform;
D O I：
10.1117/1.602036
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We describe a joint transform correlator (JTC) that uses multiple input images encoded in the spatial domain for multiwavelet feature extraction. We extend the theory of a JTC to multiple inputs, which enables various combinations of cross-correlations between input images to be performed. Furthermore, we provide experimental results for four inputs with an optically addressed spatial light modulator in the Fourier plane. In addition, it is possible that the space-bandwidth product for multiwavelet feature extraction can be made the same as for a two-input JTC. (C) 1998 Society of Photo-Optical instrumentation Engineers.
引用
收藏
页码：1325 / 1331
页数：7
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