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Please use this identifier to cite or link to this item: http://hdl.handle.net/10373/756

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Title: Optical implementation of a photorefractive joint transform correlator with wavelet filters
Authors: Zhang, H.
Cartwright, Colin M.
Ding, M. S.
Gillespie, W. A.
Affiliation: University of Abertay Dundee. School of Computing & Engineering Systems
Keywords: Transform
Wavelet filter
Joint power spectrum
Issue Date: 2000
Publisher: Elsevier
Type: Journal Article
Refereed: peer-reviewed
Rights: Published version (c)Elsevier, available from doi:10.1016/S0030-4018(00)00760-4
Citation: Zhang, H., et al. 2000. Optical implementation of a photorefractive joint transform correlator with wavelet filters. Optics Communications. 181(4-6): pp. 223-230. Available from http://dx.doi.org/doi:10.1016/S0030-4018(00)00760-4
Abstract: We have investigated a real-time photorefractive joint transform correlator (JTC) with a bank of wavelet filters. In the experimental set-up, a photorefractive crystal BSO has been used as the dynamic holographic medium and a bank of discrete wavelet functions, derived from a mother Mexican-hat wavelet have been selected to achieve band-pass operations in the JTC Fourier domain. With the proper dilation factors, shaper correlation peaks, higher discrimination ability and higher noise robustness have been obtained. Experimental results and analysis are presented.
URI: http://hdl.handle.net/10373/756
ISSN: 0030-4018
Appears in Collections:Computing & Engineering Systems Collection

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