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A Simple Operator for Very Precise Estimation of Ellipses

Jean-Nicolas Ouellet and Patrick Hébert
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Abstract - This paper presents a simple linear operator that accurately estimates the position and parameters of ellipse features. Based on the dual conic model, the operator avoids the intermediate stage of precisely extracting individual edge points by exploitingdirectly the raw gradient information in the neighborhood of an ellipse's boundary. Moreover, under the dual representation, the dual conic can easily be constrained to a dual ellipse when minimizing the algebraic distance. The new operator is assessed and compared to other estimation approaches in simulation as well as in real situation experiments and shows better accuracy than the best approaches, including those limited to the center position.

Bibtex:

@inproceedings{Ouellet672,
author    = { Jean-Nicolas Ouellet and Patrick Hébert },
title     = { A Simple Operator for Very Precise Estimation of Ellipses },
booktitle = { CRV '07: Proceedings of the Fourth Canadian Conference on Computer and Robot Vision },
pages     = { 21--28 },
publisher = { IEEE Computer Society },
address   = { Montréal, Qc, Canada },
year      = { 2007 },
month     = { 28 - 30 May },
ISBN      = { 0-7695-2786-8 },
web       = { http://vision.gel.ulaval.ca/~jouellet/DualEllipse }
}

Dernière modification: 2007/03/16 par jouellet

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