Abertay Research Collections >
Computing & Engineering Systems >
Computing & Engineering Systems Collection >
Please use this identifier to cite or link to this item:
|Title: ||Triple joint transform correlator|
|Authors: ||Zhang, Hui|
Cartwright, Colin M.
Gillespie, G. A.
|Affiliation: ||University of Abertay Dundee. School of Computing & Engineering Systems|
|Keywords: ||Joint transform correlator|
Optical object recognition
|Issue Date: ||1999|
|Publisher: ||The International Society for Optical Engineering|
|Type: ||Conference Paper|
|Rights: ||Published version (c)SPIE, available from doi:10.1117/12.341300|
|Citation: ||Hui Z., et al. 1999. Triple joint transform correlator. SPIE's 13th Annual International Symposium on Aerospace/Defense Sensing,Simulation and Controls,5-9 April, 1999, Orlando, Florida USA, SPIE Proceedings: Optical Pattern recognition X. 3715. pp.185-196. Available from http://dx.doi.org/doi:10.1117/12.341300|
|Abstract: ||The joint transform correlator (JTC) is a robust architecture for optical object recognition or verification and has been investigated intensively for a number of years. In order to improve its performance digital processing, such as binarization to an appropriate threshold, has been proposed at the recording stage of the joint power spectrum (JPS), this of course to some extent negates the benefits of an optical system. We propose to employ a third beam which is coherent to the beams forming the JPS and is the Fourier transform of an appropriate third input image and thus can be used to modify the JPS so as to implement a phase only filtering action for example. The triple joint transform correlator thus consists of three Fourier spectra incident simultaneously on a photorefractive crystal and can exhibit improved discrimination over the conventional JTC without an intermediate digital processing stage. Computer simulations and experimental results are presented.|
|Appears in Collections:||Computing & Engineering Systems Collection|
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.