Iterative refinement of point correspondences for 3D statistical shape models.

Sharmishtaa Seshamani, Gouthami Chintalapani, Russell H Taylor

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Statistical atlases of bone anatomy are traditionally constructed with point-based models. These methods establish initial point correspondences across the population of shapes and model variations in the shapes using a variety of statistical tools. A drawbacks of such methods is that initial point correspondences are not updated after their first establishment. This paper proposes an iterative method for refining point correspondences for statistical atlases. The statistical model is used to estimate the direction of "pull" along the surface and consistency checks are used to ensure that illegal shapes are not generated. Our method is much faster that previous methods since it does not rely on computationally expensive deformable registration. It is also generalizable and can be used with any statististical model. We perform experiments on a human pelvis atlas consisting of 110 healthy patients and demonstrate that the method can be used to re-estimate point correspondences which reduce the hausdorff distance from 3.2mm to 2.7mm and the surface error from 1.6mm to 1.4mm for PCA modelling with 20 modes.

Original languageEnglish (US)
Title of host publicationMedical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention
Pages417-425
Number of pages9
Volume14
EditionPt 2
StatePublished - 2011

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ASJC Scopus subject areas

  • Medicine(all)

Cite this

Seshamani, S., Chintalapani, G., & Taylor, R. H. (2011). Iterative refinement of point correspondences for 3D statistical shape models. In Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention (Pt 2 ed., Vol. 14, pp. 417-425)