Circularity of objects in images

Authors:
M. J. Bottema
Affiliations:
Sch. of Inf. Sci. & Eng., Flinders Univ. of South Australia, Adelaide, SA, Australia
Venue:
ICASSP '00 Proceedings of the Acoustics, Speech, and Signal Processing, 2000. on IEEE International Conference - Volume 04
Year:
2000

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Abstract

The most commonly used measure of circularity of objects in images is shown to give incorrect results. An alternative measure of circularity based on the distance between a set and a discrete disk is described. The alternative measure gives circularity zero (distance zero) for discrete disks and values in the range (0,1) for discrete sets which are not disks.