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Comparative Study
. 2004 Jul;23(7):922-6.
doi: 10.1109/TMI.2004.828352.

Registration-based interpolation

G P Penney  1 , J A Schnabel, D Rueckert, M A Viergever, W J Niessen
Affiliations
Comparative Study

Registration-based interpolation

G P Penney et al. IEEE Trans Med Imaging. 2004 Jul.

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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