Different weighting approaches for performing heterogeneous correlation

Jehad Khoury; Peter D. Gianino; Charles L. Woods

doi:10.1117/12.458410

6 March 2002 Different weighting approaches for performing heterogeneous correlation

Jehad Khoury, Peter D. Gianino, Charles L. Woods

Proceedings Volume 4734, Optical Pattern Recognition XIII; (2002) https://doi.org/10.1117/12.458410
Event: AeroSense 2002, 2002, Orlando, FL, United States

Abstract

In this paper we introduce three weighting algorithms for performing shift-invariant heterogeneous phase-restricted correlation filters that are capable of identifying an object as belonging to a certain class while rejecting any object that is not a member of that class. We compare the performance of these highly discriminative filters to the performance of the phase-only filter, and the non- discriminative matched correlation filter, in similar circumstances. Even when the proposed filters achieved proper classification, the intensities of the correlation from heterogenous targets were much smaller than those from homogeneous targets. To increase the intensities of these hetero-correlation peaks relative to the autocorrelation peaks, we also introduced a fractional power law into the filter's transfer function, thereby controlling the rejection capability of the filter.

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Jehad Khoury, Peter D. Gianino, and Charles L. Woods "Different weighting approaches for performing heterogeneous correlation", Proc. SPIE 4734, Optical Pattern Recognition XIII, (6 March 2002); https://doi.org/10.1117/12.458410

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KEYWORDS

Image filtering

Phase only filters

Filtering (signal processing)

Fourier transforms

Detection and tracking algorithms

Electronic filtering

Optical filters

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