Shape ellipticity based on the first Hu moment invariant

Authors:
Dragiša Unić;Joviša Unić
Affiliations:
Faculty of Economics and Engineering Management, FIMEK, Novi Sad, Serbia;Computer Science, University of Exeter, Exeter, UK
Venue:
Information Processing Letters
Year:
2013

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Abstract

In this paper we use the first Hu moment invariant to define a new ellipticity measure. The new ellipticity measure ranges over the interval (0,1] and picks the value 1 if and only if the measured shape is an ellipse. The measure is invariant with respect to translation, rotation and scaling transformations. It is straightforward and fast to compute.