Generalized in-plane rotation-invariant minimum average correlation energy filter

David P. Casasent; Gopalan Ravichandran

doi:10.1117/12.55953

1 October 1991 Generalized in-plane rotation-invariant minimum average correlation energy filter

David P. Casasent, Gopalan Ravichandran

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Optical Engineering, Vol. 30, Issue 10, (October 1991). https://doi.org/10.1117/12.55953

Abstract

A rotation-invariant correlation filter to minimize correlation plane energy and produce a sharp and easily detected peak is addressed. The filter uses symmetry requirements to achieve rotation invariance and hence is generalized. Full mathematical detail of the filter synthesis and initial test results are presented. Drawbacks of the existing circular harmonic function (CHF) and other rotation-invariant filters are noted and used as motivation for these new filters.

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David P. Casasent and Gopalan Ravichandran "Generalized in-plane rotation-invariant minimum average correlation energy filter," Optical Engineering 30(10), (1 October 1991). https://doi.org/10.1117/12.55953

Published: 1 October 1991

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