2001 | OriginalPaper | Buchkapitel
Fast Multiresolution Extraction of Multiple Transparent Isosurfaces
verfasst von : Thomas Gerstner
Erschienen in: Data Visualization 2001
Verlag: Springer Vienna
Enthalten in: Professional Book Archive
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In this paper, we present a multiresolution algorithm which is capable to render multiple transparent isosurfaces under real-time constraints. To this end, the underlying 3D data set is covered with a hierarchical tetrahedral grid. The multiresolution extraction algorithm is then based on an adaptive traversal of the tetrahedral grid with the help of error indicators. The display of transparent isosurfaces using alpha blending requires a back-to-front rendering of the isosurface triangles. This is achieved by a hierarchical sorting procedure of the tetrahedra and the hierarchical computation of data gradients. We will also comment on the automated selection of suitable isovalues for visualization applications.