| Autor: |
Gregorski, Benjamin, Senecal, Joshua, Duchaineau, Mark A., Joy, Kenneth I. |
| Předmět: |
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| Zdroj: |
IEEE Transactions on Visualization & Computer Graphics; Nov/Dec2004, Vol. 10 Issue 6, p683-694, 12p, 4 Color Photographs, 12 Black and White Photographs, 3 Charts, 2 Graphs |
| Abstrakt: |
We present an algorithm for adaptively extracting and rendering isosurfaces from compressed time-varying volume data sets. Tetrahedral meshes defined by longest edge bisection are used to create a multiresolution representation of the volume in the spatial domain that is adapted over time to approximate the time-varying volume. The reextraction of the isosurface at each time step is accelerated with the vertex programming capabilities of modern graphics hardware. A data layout scheme which follows the access pattern indicated by mesh refinement is used to access the volume in a spatially and temporally coherent manner. This data layout scheme allows our algorithm to be used for out-of-core visualization. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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