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Proceedings Paper

The Relative Importance Of Phase And Amplitude In Matched Filtering
Author(s): Joseph L. Horner; Peter D. Gianino
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Paper Abstract

The relationship between phase and amplitude in matched filters is examined. From image processing work, we know that the phase information is significantly more important than amplitude inform-ation in preserving the features of a visual scene. Is the same thing true in the case of a matched filter? From previous workl we know that a pure phase correlation filter can have an optical effi-ciency (Horner Efficiency) of 100% in an optical correlation system. The trade-off for this is in the discrimination ability of the filter. We examine this relationship in the case of alpha-numeric characters using a computer simulation. Phase-only and amplitude-only filters are analyzed. Three-dimensional plots of the autocorrelation and crosscorrelation functions are presented and discussed.

Paper Details

Date Published: 15 April 1983
PDF: 5 pages
Proc. SPIE 0422, 10th Intl Optical Computing Conf, (15 April 1983); doi: 10.1117/12.936151
Show Author Affiliations
Joseph L. Horner, Rome Air Development Center (United States)
Peter D. Gianino, Rome Air Development Center (United States)

Published in SPIE Proceedings Vol. 0422:
10th Intl Optical Computing Conf
Sam Horvitz, Editor(s)

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