The Relative Importance Of Phase And Amplitude In Matched Filtering

Joseph L. Horner; Peter D. Gianino

doi:10.1117/12.936151

15 April 1983 The Relative Importance Of Phase And Amplitude In Matched Filtering

Joseph L. Horner, Peter D. Gianino

Proceedings Volume 0422, 10th Intl Optical Computing Conf; (1983) https://doi.org/10.1117/12.936151
Event: 10th International Optical Computing Conference, 1983, Cambridge, United States

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.

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Joseph L. Horner and Peter D. Gianino "The Relative Importance Of Phase And Amplitude In Matched Filtering", Proc. SPIE 0422, 10th Intl Optical Computing Conf, (15 April 1983); https://doi.org/10.1117/12.936151

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