Grid Refinement in Adaptive Non-rigid Registration

  • Hyunjin Park
  • Charles R. Meyer
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2879)


Non-rigid mutual information (MI) registration algorithms with many degrees of freedom (DOF) are quite useful, but they come at high computational cost and have convergence issues. As a remedy adaptive non-rigid registration algorithms, where DOF is increased adaptively (i.e. the grid is refined adaptively), have been proposed. There are at least two ways to refine a grid adaptively: one based on changes in the global measure, the other based on a local measure. We compare these two and show that a local measure method can have better sensitivity to deformations than the global measure. The local measure employed is a novel method using local entropies and local MI.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2003

Authors and Affiliations

  • Hyunjin Park
    • 1
  • Charles R. Meyer
    • 1
  1. 1.Department of RadiologyUniversity of Michigan Medical SchoolUSA

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