On the consistency of the normalized eight-point algorithm
Date
2007
Authors
Chojnacki, W.
Brooks, M.
Editors
Advisors
Journal Title
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Volume Title
Type:
Journal article
Citation
Journal of Mathematical Imaging and Vision, 2007; 28(1):19-27
Statement of Responsibility
Wojciech Chojnacki and Michael J. Brooks
Conference Name
Abstract
A recently proposed argument to explain the improved performance of the eight-point algorithm that results from using normalized data (Chojnacki, W., et al. in IEEE Trans. Pattern Anal. Mach. Intell. 25(9):1172–1177, 2003) relies upon adoption of a certain model for statistical data distribution. Under this model, the cost function that underlies the algorithm operating on the normalized data is statistically more advantageous than the cost function that underpins the algorithm using unnormalized data. Here we extend this explanation by introducing a more refined, structured model for data distribution. Under the extended model, the normalized eight-point algorithm turns out to be approximately consistent in a statistical sense. The proposed extension provides a link between the existing statistical rationalization of the normalized eight-point algorithm and the approach of Mühlich and Mester for enhancing total least squares estimation methods via equilibration. The paper forms part of a wider effort to rationalize and interrelate foundational methods in vision parameter estimation.