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Deformable Surface Techniques for Field Visualization
Author(s) -
Sadarjoen I.,
Post Frits H.
Publication year - 1997
Publication title -
computer graphics forum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 120
eISSN - 1467-8659
pISSN - 0167-7055
DOI - 10.1111/1467-8659.16.3conferenceissue.12
Subject(s) - isosurface , polygon (computer graphics) , surface (topology) , visualization , computer science , displacement (psychology) , scientific visualization , field (mathematics) , surface reconstruction , scalar (mathematics) , marching cubes , displacement field , scalar field , algorithm , computer graphics (images) , geometry , mathematics , artificial intelligence , physics , pure mathematics , mathematical physics , psychology , telecommunications , frame (networking) , finite element method , psychotherapist , thermodynamics
Surface extraction from data fields is often used in scientific visualization, as surfaces can represent meaningful information and they are well suited for display. This paper describes a general method for localized surface extraction from scalar and vector fields. An initial polygonal surface is placed within the field, and the shape of the surface is adapted to the field by iterative displacement of surface nodes according to a displacement criterion. To achieve a good approximation of a smooth surface, the polygon mesh can be locally refined during iteration. The type of surface extracted depends on the displacement criterion, which can be any function of the available field variables. Techniques for displacement and mesh refinement are discussed in detail. The results we show are generation of a local isosurface and extraction of a vortex tube. Finally, we will draw conclusions and discuss some issues for further development.