@Article{MohammadRouhani2012, author="Mohammad Rouhani and Angel Sappa", title="Implicit Polynomial Representation through a Fast Fitting Error Estimation", journal="IEEE Transactions on Image Processing", year="2012", volume="21", number="4", pages="2089--2098", abstract="Impact FactorThis paper presents a simple distance estimation for implicit polynomial fitting. It is computed as the height of a simplex built between the point and the surface (i.e., a triangle in 2-D or a tetrahedron in 3-D), which is used as a coarse but reliable estimation of the orthogonal distance. The proposed distance can be described as a function of the coefficients of the implicit polynomial. Moreover, it is differentiable and has a smooth behavior . Hence, it can be used in any gradient-based optimization. In this paper, its use in a Levenberg-Marquardt framework is shown, which is particularly devoted for nonlinear least squares problems. The proposed estimation is a generalization of the gradient-based distance estimation, which is widely used in the literature. Experimental results, both in 2-D and 3-D data sets, are provided. Comparisons with state-of-the-art techniques are presented, showing the advantages of the proposed approach.", optnote="ADAS", optnote="exported from refbase (http://refbase.cvc.uab.es/show.php?record=1937), last updated on Fri, 23 Jun 2017 10:59:14 +0200", issn="1057-7149", doi="10.1109/TIP.2011.2170080", file=":http://refbase.cvc.uab.es/files/RoS2012b.pdf:PDF" }