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Fusing Correspondenceless 3D Point Distribution Models

  • Marco Pereañez
  • Karim Lekadir
  • Constantine Butakoff
  • Corné Hoogendoorn
  • Alejandro Frangi
Part of the Lecture Notes in Computer Science book series (LNCS, volume 8149)

Abstract

This paper presents a framework for the fusion of multiple point distribution models (PDMs) with unknown point correspondences. With this work, models built from distinct patient groups and imaging modalities can be merged, with the aim to obtain a PDM that encodes a wider range of anatomical variability. To achieve this, two technical challenges are addressed in this work. Firstly, the model fusion must be carried out directly on the corresponding means and eigenvectors as the original data is not always available and cannot be freely exchanged across centers for various legal and practical reasons. Secondly, the PDMs need to be normalized before fusion as the point correspondence is unknown. The proposed framework is validated by integrating statistical models of the left and right ventricles of the heart constructed from different imaging modalities (MRI and CT) and with different landmark representations of the data. The results show that the integration is statistically and anatomically meaningful and that the quality of the resulting model is significantly improved.

Keywords

Point Correspondence Statistical Shape Model Target Mesh Point Distribution Model Surface Correspondence 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Marco Pereañez
    • 1
  • Karim Lekadir
    • 1
  • Constantine Butakoff
    • 2
  • Corné Hoogendoorn
    • 1
  • Alejandro Frangi
    • 3
  1. 1.CISTIBUniversitat Pompeu Fabra and CIBER-BBNBarcelonaSpain
  2. 2.PhySenseUniversitat Pompeu FabraBarcelonaSpain
  3. 3.CISTIBUniversity of SheffieldSheffieldUK

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