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Issue No. 05 - May (2010 vol. 32)
ISSN: 0162-8828
pp: 940-946
Shahar Z. Kovalsky , Ben-Gurion University, Beer-Sheva
Guy Cohen , Ben-Gurion University, Beer-Sheva
Rami Hagege , Ben-Gurion University, Beer-Sheva
Joseph M. Francos , Ben-Gurion University, Beer-Sheva
We consider the problem of registering two observations on an arbitrary object, where the two are related by a geometric affine transformation of their coordinate systems, and by a nonlinear mapping of their intensities. More generally, the framework is that of jointly estimating the geometric and radiometric deformations relating two observations on the same object. We show that the original high-dimensional, nonlinear, and nonconvex search problem of simultaneously recovering the geometric and radiometric deformations can be represented by an equivalent sequence of two linear systems. A solution of this sequence yields an exact, explicit, and efficient solution to the joint estimation problem.
Affine transformations, image registration, linear estimation, parameter estimation, domain registration, nonlinear range registration.

S. Z. Kovalsky, G. Cohen, J. M. Francos and R. Hagege, "Decoupled Linear Estimation of Affine Geometric Deformations and Nonlinear Intensity Transformations of Images," in IEEE Transactions on Pattern Analysis & Machine Intelligence, vol. 32, no. , pp. 940-946, 2010.
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