A Convexity Measure for Open and Closed Contours


Corcoran, Padraig and Mooney, Peter and Winstanley, Adam C. (2011) A Convexity Measure for Open and Closed Contours. In: 22nd British Machine Vision Conference (BMVC 2011), 29 August - 2 September 2011, Dundee, Scotland.

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Abstract

Convexity represents a fundamental descriptor of object shape. This paper presents a new convexity measure for both open and closed simple contours. Given such a contour this measure extracts two corresponding open convex hulls. The shape similarity between these two hulls and the original contour is then computed and normalized to give a measure of convexity. The time complexity of the proposed technique is O(n). The authors believe this technique represents the first measure of convexity which uses shape similarity and which can be applied to both open and closed contours. The proposed technique is shown to provide similar or greater performance relative to two other state of the art techniques.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Research presented in this paper was part-funded by a Strategic Research Cluster grant (07/SRC/I1168) from Science Foundation Ireland under the National Development Plan.
Keywords: Convexity Measure; Open and Closed Contours;
Academic Unit: Faculty of Science and Engineering > Computer Science
Item ID: 4934
Depositing User: Dr. Adam Winstanley
Date Deposited: 21 May 2014 14:15
Refereed: Yes
Funders: Science Foundation Ireland
URI:

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