Shape orientability

Authors:
Joviša Žunić;Paul L. Rosin;Lazar Kopanja
Affiliations:
Computer Science Department, Exeter University, Exeter, UK;School of Computer Science, Cardiff University, Cardiff, UK;Department of Mathematics and Informatics, Novi Sad University, Novi Sad, Serbia and Montenegro
Venue:
ACCV'06 Proceedings of the 7th Asian conference on Computer Vision - Volume Part II
Year:
2006

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Abstract

In this paper we consider some questions related to the orientation of shapes. We introduce as a new shape feature shape orientability, i.e. the degree to which a shape has distinct (but not necessarily unique) orientation. A new method is described for measuring shape orientability, and has several desirable properties. In particular, unlike the standard moment based measure of elongation, it is able to differentiate between the varying levels of orientability of n-fold rotationally symmetric shapes.