Registration-based interpolation

IEEE Transactions on Medical Imaging
G P PenneyW J Niessen

Abstract

A method is presented to interpolate between neighboring slices in a grey-scale tomographic data set. Spatial correspondence between adjacent slices is established using a nonrigid registration algorithm based on B-splines which optimizes the normalized mutual information similarity measure. Linear interpolation of the image intensities is then carried out along the directions calculated by the registration algorithm. The registration-based method is compared to both standard linear interpolation and shape-based interpolation in 20 tomographic data sets. Results show that the proposed method statistically significantly outperforms both linear and shape-based interpolation.

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Dec 18, 2013·Journal of the Royal Society, Interface·Pablo LamataNic Smith
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