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Proceedings Paper

Optical architecture of a joint transform local correlator
Author(s): Arne Skov Jensen; Alexander G. Sobolev; Vladimir A. Volkov; Gennady M. Reitblat
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Paper Abstract

Local correlations are correlations of separate or overlapping small areas from relevant image sources: images pairs from spatial and/or temporal optical flows. The information gained from the local correlation functions is the maximum peak position that can be related to certain flow parameters, viz. velocity and depth. From an optical processing point of view, these data structures have the advantage of being their own reference, which is a considerable simplification compared with the data processing scheme of a conventional Van der Lugt correlator. An optical implementation of a joint transform local correlator can be performed with few and very compact optical elements. Three architectures will be discussed: a set-up with a refractive lens array, a set-up with a diffractive lens array and a set-up based on an acousto- optical time integrating correlator.

Paper Details

Date Published: 27 December 1996
PDF: 5 pages
Proc. SPIE 2969, Second International Conference on Optical Information Processing, (27 December 1996); doi: 10.1117/12.262615
Show Author Affiliations
Arne Skov Jensen, Riseo National Lab. (Denmark)
Alexander G. Sobolev, Institute for High-Performance Computer Systems (Russia)
Vladimir A. Volkov, Institute for High-Performance Computer Systems (Russia)
Gennady M. Reitblat, Institute for High-Performance Computer Systems (Russia)


Published in SPIE Proceedings Vol. 2969:
Second International Conference on Optical Information Processing
Zhores I. Alferov; Yuri V. Gulyaev; Dennis R. Pape, Editor(s)

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