Paper Info
Title
Unstructured Computational Meshes For Subdivision Geometry Of Scanned Geological Objects
Abstract
This paper presents a generic approach to generation of surface and volume unstructured meshes for complex free-form objects, obtained by laser scanning. A four-stage automated procedure is proposed for discrete data sets: surface mesh extraction from Delaunay tetrahedrization of scanned points, surface mesh simplification, definition of triangular interpolating subdivision faces, Delaunay volumetric meshing of obtained geometry. The mesh simplification approach is based on the medial Hausdorff distance envelope between scanned and simplified geometric surface meshes. The simplified mesh is directly used as an unstructured control mesh for subdivision surface representation that precisely captures arbitrary shapes of faces, composing the boundary of scanned objects. CAD model in Boundary Representation retains sharp and smooth features of the geometry for further meshing. Volumetric meshes with the MezGen code are used in the combined Finite-Discrete element methods for simulation of complex phenomena within the integrated Virtual Geoscience Workbench environment (VGW).
Year
DOI
Venue
2005
10.1007/3-540-29090-7_5
PROCEEDINGS OF THE 14TH INTERNATIONAL MESHING ROUNDTABLE
Keywords
Field
DocType
laser scanning, unstructured mesh, mesh simplification, subdivision surfaces
Boundary representation,Polygon mesh,Volume mesh,T-vertices,Subdivision surface,Subdivision,Hausdorff distance,Geometry,Mathematics,Delaunay triangulation
Conference
Citations 
PageRank 
References 
2
0.40
12
Authors
3
Name
Order
Citations
PageRank
Andrey A. Mezentsev1375.49
Antonio Munjiza220.40
John-paul Latham320.40