Comparative analysis of quasi-conformal deformations in shape space.
Med Image Comput Comput Assist Interv
; 13(Pt 3): 489-96, 2010.
Article
em En
| MEDLINE
| ID: mdl-20879436
ABSTRACT
A novel approach based on the shape space concept is proposed to classify quasi-conformal deformations of 3D models. A new metric on the quotient space of meshes is introduced to capture changes of the curvature at each vertex of a simplicial complex during deformation. Then, the deformation curve is obtained by calculating the geodesic curve connecting two shapes in the shape space manifold. In order to compare the deformations, the deformation curves are first transferred to the same part of shape space. And then, the Multi-Dimensional Scaling method is employed to eliminate the redundant dimensions facilitating easy comparison of the deformations. To evaluate our method, some synthetic datasets and 23 datasets of gated images of the left heart ventricle during one heartbeat have been examined. Our experiments show that the algorithm can effectively classify normal and abnormal left heart ventricle deformations in shape space.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Algoritmos
/
Interpretação de Imagem Assistida por Computador
/
Imagem Cinética por Ressonância Magnética
/
Imageamento Tridimensional
/
Técnicas de Imagem de Sincronização Cardíaca
/
Ventrículos do Coração
Tipo de estudo:
Diagnostic_studies
/
Evaluation_studies
/
Prognostic_studies
Limite:
Humans
Idioma:
En
Ano de publicação:
2010
Tipo de documento:
Article