Computer graphics helps communicate 3D concepts, inspect medical or CAD models, and
interact with education and entertainment software. Although canned video sequences of 3D …

La solution la plus commune pour résoudre les problèmes de précision liés aux
arithmétiques des ordinateurs est l'utilisation d'arithmétiques exactes. Nous proposons dans …

Pour une navigation humaine immersive dans un environnement virtuel, il est n ecessaire
de calculer et d'a cher au moins 15 a 20 images (voire paires d'images) par seconde, an …

In this thesis we address level of detail optimization, the problem of automatically selecting
object detail levels in an interactive visualization. A good selection mechanism should select …

Abstract Converting NURBS based CAD Data into polygonal data often leads to
unconnected faces at patch borders, wrong sided face normals and holes in the calculated …

In this paper, we present a model defined by a hierarchy and a superposition of planar
maps. Though this model is not 3-D, it allows to manage levels of detail and to separate out …

The paper focuses on an adaptation of a virtual camera to a horizontal stereoscopic
projection (Virtual Table). To get the correct view to stereoscopic projections it is necessary …

Polyhedra constitute a very powerful tool to model scenes in image synthesis and Computer
Aided Design. Generalized polyhedra are standard polyhedra with non-planar surfaces …

Nowadays, data visualization plays an important role in geo-spatial data investigations,
speci cally in the context of visual exploration at interactive frame rates. Geo-spatial data …

The overall goal of the project is to provide representations and algorithms for the real-time
navigation, on consumer hardware, in a realistic and plausible virtual Earth model. We target …