Sciweavers

335 search results - page 3 / 67
» Volume Queries in Polyhedra
Sort
View
VG
2003
13 years 8 months ago
Cell Projection of Convex Polyhedra
Finite element methods commonly use unstructured grids as the computational domain. As a matter of fact, the volume visualization of these unstructured grids is a time consuming t...
Stefan Röttger, Thomas Ertl
ER
2003
Springer
86views Database» more  ER 2003»
14 years 20 days ago
An Interpolated Volume Model for Databases
In this paper we present a volume data model amenable to querying volumes in databases. Unlike most existing volume models, which are directed towards specific applications (notab...
Tianqiu Wang, Simone Santini, Amarnath Gupta
ESA
2007
Springer
101views Algorithms» more  ESA 2007»
14 years 1 months ago
Linear Data Structures for Fast Ray-Shooting Amidst Convex Polyhedra
We consider the problem of ray shooting in a three-dimensional scene consisting of k (possibly intersecting) convex polyhedra with a total of n facets. That is, we want to preproc...
Haim Kaplan, Natan Rubin, Micha Sharir
SODA
2012
ACM
196views Algorithms» more  SODA 2012»
11 years 10 months ago
Polytope approximation and the Mahler volume
The problem of approximating convex bodies by polytopes is an important and well studied problem. Given a convex body K in Rd , the objective is to minimize the number of vertices...
Sunil Arya, Guilherme Dias da Fonseca, David M. Mo...
CGF
2008
128views more  CGF 2008»
13 years 7 months ago
Hierarchical Convex Approximation of 3D Shapes for Fast Region Selection
Given a 3D solid model S represented by a tetrahedral mesh, we describe a novel algorithm to compute a hierarchy of convex polyhedra that tightly enclose S. The hierarchy can be b...
Marco Attene, Michela Mortara, Michela Spagnuolo, ...