The geological data are incomplete and heterogeneous. They are located on various supports:
- local probings: drillings, wells, tunnels...
- numerical model of terrain
- geological map
- interpreted geological cross-sections
- outcrop informations, directions of interfaces...
| The heterogeneous initial data are discretized. The points obtained are assigned a "color", each color corresponding to a geological formation.
The Voronoi diagram of these points gives a decomposition of the space into convex cells.
This method yields a volumic representation of the subsoil.
|The geological formations determined from the Voronoi diagram are then smoothed, using 3D deformable meshes, while keeping the initial topology of the model.|
|Reconstruction of the subsoil of the region of Morges (French Alps) The data on this example are the numerical model of terrain, the geological map, and eight geological cross-sections. These sections are interpreted and incomplete, on more or less parallel planes.|
|Slides (Stéphane Nullans' defense, in French)|
|Last modified: Thu Nov 9 11:59:53 MET 2000||Monique Teillaud||Topics||Français|