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Proceedings Paper

Spatial integrating joint transform correlator for pattern recognition by use of an infinite grating filter
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Paper Abstract

A joint transform correlator (JTC) is presented. In the proposed setup the joint transform of the images to be correlated is filtered by an infinite Ronchi ruling, which is generated by a spatial light modulator, SLM, at the Fourier plane. A lens produces the spatial integral of the product of the joint transform of the composite input and the amplitude transmittance of the spatial light modulator, and a photodetector acquire the total light energy transmitted by the SLM. The proposed technique significantly reduces the processing time needed for real-time applications.

Paper Details

Date Published: 1 September 2009
PDF: 9 pages
Proc. SPIE 7442, Optics and Photonics for Information Processing III, 74421C (1 September 2009); doi: 10.1117/12.827869
Show Author Affiliations
Jorge L. Flores, Univ. de Guadalajara (Mexico)
José A. Ferrari, Univ. de la República (Uruguay)
G. Garcia-Torales, Univ. de Guadalajara (Mexico)
Jorge Sánchez Preciado, Univ. de Guadalajara (Mexico)

Published in SPIE Proceedings Vol. 7442:
Optics and Photonics for Information Processing III
Khan M. Iftekharuddin; Abdul Ahad Sami Awwal, Editor(s)

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