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Estimation of nonlinear errors-in-variables models for computer vision applications (2006)
| Venue: | IEEE Trans. Patt. Anal. Mach. Intell |
| Citations: | 33 - 6 self |
BibTeX
@ARTICLE{Matei06estimationof,
author = {Bogdan C. Matei and Ieee Computer Society and Peter Meer and Senior Member},
title = {Estimation of nonlinear errors-in-variables models for computer vision applications},
journal = {IEEE Trans. Patt. Anal. Mach. Intell},
year = {2006},
volume = {28},
pages = {2006}
}
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Abstract
Abstract—In an errors-in-variables (EIV) model, all the measurements are corrupted by noise. The class of EIV models with constraints separable into the product of two nonlinear functions, one solely in the variables and one solely in the parameters, is general enough to represent most computer vision problems. We show that the estimation of such nonlinear EIV models can be reduced to iteratively estimating a linear model having point dependent, i.e., heteroscedastic, noise process. Particular cases of the proposed heteroscedastic errors-in-variables (HEIV) estimator are related to other techniques described in the vision literature: the Sampson method, renormalization, and the fundamental numerical scheme. In a wide variety of tasks, the HEIV estimator exhibits the same, or superior, performance as these techniques and has a weaker dependence on the quality of the initial solution than the Levenberg-Marquardt method, the standard approach toward estimating nonlinear models. Index Terms—Nonlinear least squares, heteroscedastic regression, camera calibration, 3D rigid motion, uncalibrated vision. 1 MODELING COMPUTER VISION PROBLEMS SOLVING most computer vision problems requires the estimation of a set of parameters from noisy measurements using a statistical model. A statistical model provides a mathematical description of a problem in terms of a constraint equation relating the measurements to the
Keyphrases
nonlinear errors-in-variables model computer vision application computer vision problem statistical model heiv estimator levenberg-marquardt method initial solution heteroscedastic errors-in-variables nonlinear model particular case nonlinear function noise process vision literature uncalibrated vision rigid motion heteroscedastic regression nonlinear eiv model index term eiv model noisy measurement standard approach linear model modeling computer vision problem solving point dependent constraint equation camera calibration fundamental numerical scheme sampson method wide variety mathematical description
