Optimal Initialization for 3D Correspondence Optimization: An Evaluation Study

Matthias Kirschner, Sebastian T. Gollmer, Stefan Wesarg, Thorsten M. Buzug

Abstract

The identification of corresponding landmarks across a set of training shapes is a prerequisite for statistical shape model (SSM) construction. We automatically establish 3D correspondence using one new and several known alternative approaches for consistent, shape-preserving, spherical parameterization. The initial correspondence determined by all employed methods is refined by optimizing a groupwise objective function. The quality of all models before and after optimization is thoroughly evaluated using several data sets of clinically relevant, anatomical objects of varying complexity. Correspondence quality is benchmarked in terms of the SSMs' specificity and generalization ability, which are measured using different surface based distance functions. We find that our new approach performs best for complex objects. Furthermore, all new and previously published methods of our own allow for (i) building SSMs that are significantly better than the well-known SPHARM method, (ii) establishing quasi-optimal correspondence for low and moderately complex objects without additional optimization, and (iii) considerably speeding up convergence, thus, providing means for practical, fast, and accurate SSM construction.

OriginalspracheEnglisch
TitelIPMI 2011: Information Processing in Medical Imaging
Seitenumfang12
ErscheinungsortBerlin Heidelberg
Herausgeber (Verlag)Springer-Verlag Berlin Heidelberg
Erscheinungsdatum30.06.2011
Seiten308-319
ISBN (Print)978-3-642-22091-3
ISBN (elektronisch)978-3-642-22092-0
DOIs
PublikationsstatusVeröffentlicht - 30.06.2011
Veranstaltung22nd International Conference on Information Processing in Medical Imaging
- Kloster Irsee, Deutschland
Dauer: 03.07.201108.07.2011
Konferenznummer: 85325

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