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Optical Engineering

Generalized in-plane rotation-invariant minimum average correlation energy filter
Author(s): David P. Casasent; Gopalan Ravichandran
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Paper 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.

Paper Details

Date Published: 1 October 1991
PDF: 7 pages
Opt. Eng. 30(10) doi: 10.1117/12.55953
Published in: Optical Engineering Volume 30, Issue 10
Show Author Affiliations
David P. Casasent, Carnegie Mellon Univ. (United States)
Gopalan Ravichandran

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