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IPMI
2003
Springer

Adapting Active Shape Models for 3D Segmentation of Tubular Structures in Medical Images

10 years 22 days ago
Adapting Active Shape Models for 3D Segmentation of Tubular Structures in Medical Images
Active Shape Models (ASM) have proven to be an effective approach for image segmentation. In some applications, however, the linear model of gray level appearance around a contour that is used in ASM is not sufficient for accurate boundary localization. Furthermore, the statistical shape model may be too restricted if the training set is limited. This paper describes modifications to both the shape and the appearance model of the original ASM formulation. Shape model flexibility is increased, for tubular objects, by modeling the axis deformation independent of the cross-sectional deformation, and by adding supplementary cylindrical deformation modes. Furthermore, a novel appearance modeling scheme that effectively deals with a highly varying background is developed. In contrast with the conventional ASM approach, the new appearance model is trained on both boundary and non-boundary points, and the probability that a given point belongs to the boundary is estimated non-parametrically. T...
Marleen de Bruijne, Bram van Ginneken, Max A. Vier
Added 16 Nov 2009
Updated 16 Nov 2009
Type Conference
Year 2003
Where IPMI
Authors Marleen de Bruijne, Bram van Ginneken, Max A. Viergever, Wiro J. Niessen
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