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Proceedings Paper

Computer simulation results for a Hilbert transform optical correlator
Author(s): Alastair D. McAulay
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Paper Abstract

A previously proposed Hilbert transformoptical correlator modified th einut nd filtr images by adding an x-y mirror image t provide a real Fourie tnform. In an improved corrlator we cimpute the intnsity o the fourier trnsform so that filters are guarant4ed psoitiv end ral.The cente peak of the ouptu intnsity is shown to approximate the autoconvolutionof the convolution between the originalimags.The applcain of a Hilbert tranformallows only half of th eforuier plane to be used.This cn be used to speed the correltor by two or to perit an incrase in space-bandwidth product ofinput imgs by two. Result sof cmpute simulatin are shown.

Paper Details

Date Published: 2 November 2000
PDF: 8 pages
Proc. SPIE 4113, Algorithms and Systems for Optical Information Processing IV, (2 November 2000); doi: 10.1117/12.405861
Show Author Affiliations
Alastair D. McAulay, Lehigh Univ. (United States)

Published in SPIE Proceedings Vol. 4113:
Algorithms and Systems for Optical Information Processing IV
Bahram Javidi; Demetri Psaltis, Editor(s)

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