Spatio-temporal analysis of nonrigid motion from 4D data

Abstract
We present a method for analysis of nonrigid motionin time sequences of volume images (4D data). Inthis method nonrigid motion of the deforming objectcontour is dynamically approximated by a deformablesurface. In order to reduce the number of parametersdescribing the deformation, we make use of modalanalysis which provides a spatial smoothing of the surface,and Fourier analysis on time signals of the maindeformation spectrum components, which provides atemporal smoothing. Thus, a...

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