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Proceedings Paper

Application of normalized gray-scale correlation
Author(s): Mark L. Yee; Brian A. Kast; Fred M. Dickey; K. Terry Stalker
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Paper Abstract

Real-time gray-scale correlation in the spatial domain has been demonstrated previously using an acousto-optical (AO) correlator. This work demonstrates normalized gray-scale correlation as implemented on an AO correlator system capable of operating at real-time video rates. Motivation for using normalized gray-scale correlation is presented. The normalized correlation algorithm as implemented on the AO correlator is detailed. The entire real-time AO correlator system is described, including the electronic support hardware and the user interface. Since normalization requires a division operation, system numerical precision issues are addressed. Test results obtained in non-real time experiments are presented.

Paper Details

Date Published: 25 October 1993
PDF: 11 pages
Proc. SPIE 1959, Optical Pattern Recognition IV, (25 October 1993); doi: 10.1117/12.160328
Show Author Affiliations
Mark L. Yee, Sandia National Labs. (United States)
Brian A. Kast, Spectra Research Institute (United States)
Fred M. Dickey, Sandia National Labs. (United States)
K. Terry Stalker, Sandia National Labs. (United States)

Published in SPIE Proceedings Vol. 1959:
Optical Pattern Recognition IV
David P. Casasent, Editor(s)

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