Transformation Functions for Image Registration
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چکیده
This paper presents a survey of past transformation functions for image registration and introduces a new transformation function for registration of images containing rigid as well as nonrigid regions. Included in the survey are similarity transformation, linear transformation, and nonlinear transformation. Nonlinear transformation itself includes thin-plate splines, radial basis functions, approximation methods, piecewise methods, and piecewise approximation methods. Transformation functions for registration of both 2-D and 3-D (volumetric) images are discussed and their properties are investigated. Accuracies of the transformations in registration of images with various degrees of geometric differences are determined and compared.
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