Anais do IX SIBGRAPI'96 (1996), 181-188
Obtenção da Transformação de Corpo Rígido em Registro de Imagens com Deformação usando Thin Plate Splines
José Eduardo C. Castanho e Clésio Tozzi
UNESP/UNICAMP
castanho@azul.bauru.unesp.br
- Abstract:
-
Thin plate splines present features that make them suitable for image registration of
deformed images. They are functions that can be interpreted as a linear combination of a plane
(modelling a general linear transformation) with a smooth surface (modelling an affine-free
deformation). In this way, registration with thin plate splines can be interpreted as a problem
of surface fitting through a scattered set of points. In some applications,as in image registration
of serial sections, it is often necessary to find a rigid body transformation that
matches features in two images under natural deformations. We present a method for image registration
using thin plate splines such that the linear term of the function is assured to be of rigid
body type. The resulting function is optimal in the sense that the total bending energy of the fitted
surface is minimum.
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