منابع مشابه
Diffeomorphic Statistical Shape Models
We describe a method of constructing parametric statistical models of shape variation which can generate continuous diffeomorphic (non-folding) deformation £elds. Traditional statistical shape models are constructed by analysis of the positions of a set of landmark points. Here we analyse the parameters of continuous warp £elds, constructed by composing simple parametric diffeomorphic warps. Th...
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In this thesis we present an approach to combine a probabilistic Shape-fromShading algorithm with statistical models of facial shapes. Thesis presents how Fisher-Bingham (FB8) distributions are sampled using Gibbs sampling to give normal distributions on the tangent plane. These normal distributions are in turn combined with normal distributions arising from statistical models of facial shapes....
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Statistical shape models are used widely as a basis for segmenting and interpreting images. A major drawback of the approach is the need, during training, to establish a dense correspondence across a training set of segmented shapes. We show that model construction can be treated as an optimisation problem, automating the process and guaranteeing the effectiveness of the resulting models. This ...
متن کاملAnatomic Segmentation of Statistical Shape Models
Background: Shape segmentation is one of the fundamental tools in shape processing and analysis, and it provides a starting point for building part based shape models. A multitude of methods for segmenting static and dynamic shapes has been developed over the last decades [1] based on various intrinsic and extrinsic geometric features. Interestingly, so far no method seems to make explicit use ...
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The configuration matrix of a set of labeled landmarks is one the most used shape representations. However, it is well-known that the configuration matrix is not invariant under translation, scaling and rotation. This problem is revisited in this work where a local tangent shape space characterization at a reference shape is obtained as the null space of the subspace spanned by the reference sh...
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ژورنال
عنوان ژورنال: Image and Vision Computing
سال: 2008
ISSN: 0262-8856
DOI: 10.1016/j.imavis.2006.12.005