{M}odélisation de 3-{V}ariétés à base topologique~: application à la géologie.

INPL, Nancy, France

Abstract

Volumic modeling enables to represent real objects by computer science objects. In geology, a 3D model may be defined by a set of surfacic objects partitionning the 3D space in regions. For instance, these surfaces can be horizons or faults (geological objects). A volumic object composed of 3-cells (tetrahedra or arbitrary polyhedra) could be a second way to represent a 3D model. With this kind of representation, it is possible to attach several properties on the nodes of the mesh. Thanks to a topological kernel based on G-Maps, we will study the following issues : - defining efficient data strcutures enabling the decomposition of objects into discrete elements to be represented, - generating and editing meshes for surfacic and volumic objects (removing cells, splitting cells,. . . ), - using a multi-purpose operation called corefinement. We also present several geological applications using corefinement operation : insertion of a gridded chenal in a regular grid (the intersected cells of the channel and the grid are perfect), boolean operations between geological objects,. . . Consulter en bibliothèque

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BibTeX Reference

@PHDTHESIS{Conreaux01M3V,
    author = { Conreaux, Stephane },
     title = { {M}odélisation de 3-{V}ariétés à base topologique~: application à la géologie. },
   chapter = { 0 },
      year = { 2001 },
    school = { INPL, Nancy, France },
  abstract = { Volumic modeling enables to represent real objects by computer science objects. In geology, a 3D model may be defined by a set of surfacic objects partitionning the 3D space in regions. For instance, these surfaces can be horizons or faults (geological objects). A volumic object composed of 3-cells (tetrahedra or arbitrary polyhedra) could be a second way to represent a 3D model. With this kind of representation, it is possible to attach several properties on the nodes of the mesh. Thanks to a topological kernel based on G-Maps, we will study the following issues : - defining efficient data strcutures enabling the decomposition of objects into discrete elements to be represented, - generating and editing meshes for surfacic and volumic objects (removing cells, splitting cells,. . . ), - using a multi-purpose operation called corefinement. We also present several geological applications using corefinement operation : insertion of a gridded chenal in a regular grid (the intersected cells of the channel and the grid are perfect), boolean operations between geological objects,. . .
Consulter en bibliothèque }
}