Artificial enlargement of a training set for statistical shape models: application to cardiac images

  • Authors:
  • J. Lötjönen;K. Antila;E. Lamminmäki;J. Koikkalainen;M. Lilja;T. Cootes

  • Affiliations:
  • VTT Information Technology, Tampere, Finland;VTT Information Technology, Tampere, Finland;VTT Information Technology, Tampere, Finland;Laboratory of Biomedical Engineering, Helsinki University of Technology, HUT, Finland;Laboratory of Biomedical Engineering, Helsinki University of Technology, HUT, Finland;Division of Imaging Science and Biomedical Engineering, University of Manchester, U.K

  • Venue:
  • FIMH'05 Proceedings of the Third international conference on Functional Imaging and Modeling of the Heart
  • Year:
  • 2005

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Abstract

Different methods were evaluated to enlarge artificially a training set which is used to build a statistical shape model. In this work, the shape model was built from MR data of 25 subjects and it consisted of ventricles, atria and epicardium. The method adding smooth non-rigid deformations to original training set examples produced the best results. The results indicated also that artificial deformation modes model better an unseen object than an equal number of standard PCA modes generated from original data.