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IEICE TRANSACTIONS on Information

Ellipse Fitting with Hyperaccuracy

Kenichi KANATANI

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Summary :

For fitting an ellipse to a point sequence, ML (maximum likelihood) has been regarded as having the highest accuracy. In this paper, we demonstrate the existence of a "hyperaccurate" method which outperforms ML. This is made possible by error analysis of ML followed by subtraction of high-order bias terms. Since ML nearly achieves the theoretical accuracy bound (the KCR lower bound), the resulting improvement is very small. Nevertheless, our analysis has theoretical significance, illuminating the relationship between ML and the KCR lower bound.

Publication
IEICE TRANSACTIONS on Information Vol.E89-D No.10 pp.2653-2660
Publication Date
2006/10/01
Publicized
Online ISSN
1745-1361
DOI
10.1093/ietisy/e89-d.10.2653
Type of Manuscript
PAPER
Category
Image Recognition, Computer Vision

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