On using Directional Information for Parameter Space Decomposition in Ellipse Detection


Aguado, A.S., Montiel, M.E. and Nixon, M.S. (1996) On using Directional Information for Parameter Space Decomposition in Ellipse Detection. Pattern Recognition, 29, (3), 369--381.

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Description/Abstract

In this paper we use the parametric polar representation to extend the application of edge directional information from circle to ellipse extraction. As a result we obtain a mapping which decomposes the parameter space required for ellipse extraction into two independent sub-spaces and one final histogram accumulator. The mapping includes the tangent of the angle of the first and second directional derivatives. These tangents are computed by considering edge direction at two border points. We show that the use of gradient information for parameter space decomposition avoids the intensive point labelling imposed by geometric constraints used by other approaches.

Item Type: Article
Divisions: Faculty of Physical Sciences and Engineering > Electronics and Computer Science > Comms, Signal Processing & Control
ePrint ID: 250059
Date Deposited: 04 May 1999
Last Modified: 27 Mar 2014 19:50
Further Information:Google Scholar
ISI Citation Count:24
URI: http://eprints.soton.ac.uk/id/eprint/250059

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