222 search results - page 19 / 45 » A Calculus for Shapes in Time and Space |
CGF
2005
13 years 7 months ago
2005
This paper presents a real-time rendering pipeline for implicit surfaces defined by a regular volumetric grid of samples. We use a ray-casting approach on current graphics hardwar...
PAMI
2006
13 years 7 months ago
2006
We propose a new method for rapid 3D object indexing that combines feature-based methods with coarse alignment-based matching techniques. Our approach achieves a sublinear complexi...
CIVR
2007
Springer
14 years 1 months ago
2007
Springer
We present a novel matching and similarity evaluation method for planar geometric shapes represented by sets of polygonal curves. Given two shapes, the matching algorithm randomly...
ICCV
2007
IEEE
14 years 9 months ago
2007
IEEE
Shape analysis requires invariance under translation, scale and rotation. Translation and scale invariance can be realized by normalizing shape vectors with respect to their mean ...
MICCAI
2008
Springer
14 years 8 months ago
2008
Springer
In this paper, we propose a novel explicit 2D+t cyclic shape model that extends the Point Distribution Model (PDM) to shapes like myocardial contours with cyclic dynamics. We also ...