1 July 1997 Joint-transform correlator architecture for wavelet feature extraction
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A version of an image consisting of multiple wavelet scales allows for more flexible feature extraction when compared to the use of one wavelet scale. We proposed an imaging system based on a multiple-input joint-transform correlator, that could be used for multiple wavelet-scale analysis of an input image. Given a single input image and wavelet, for m wavelet scales, m versions of the wavelet and m copies of the input image were generated using conventional optics that are used as inputs to a joint wavelet-transform correlator. The output consisted of 4 m - 1 correlation results, one of which is the desired output. The space-bandwidth product of the system is the same as for a conventional two-input joint-transform correlator.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Samuel Peter Kozaitis, Samuel Peter Kozaitis, Mark A. Getbehead, Mark A. Getbehead, Wesley E. Foor, Wesley E. Foor, } "Joint-transform correlator architecture for wavelet feature extraction", Proc. SPIE 3075, Photonic Processing Technology and Applications, (1 July 1997); doi: 10.1117/12.277625; https://doi.org/10.1117/12.277625

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