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A two-step approach for interactive pre-integrated volume rendering of unstructured grids (2002)
| Content Provider | CiteSeerX |
|---|---|
| Author | Roettger, Stefan Ertl, Thomas |
| Description | In the area of volume visualization the cell projection technique is used widely to display unstructured tetrahedral grids. In this field, the pre-integration of the ray integral has proven to be a powerful method for the display of tetrahedral grids with high quality and at interactive frame rates. Besides the actual performance of the pro-jected tetrahedra algorithm of Shirley and Tuchman, the degree of interactivity is also limited by the update rate of the pre-integrated ray integral and the performance of the graphics card at high screen resolutions. In order to widen those two bottlenecks, we propose a hardware-accelerated pre-integration approach and a rendering method which applies standard 2D texture mapping instead of the previously used 3D texturing. As a result, the update rate of the transfer function is increased by almost a factor of hundred and the rasterization of the tetrahedra is sped up by up to a factor of |
| File Format | |
| Language | English |
| Publisher | IEEE Press |
| Publisher Date | 2002-01-01 |
| Publisher Institution | In Proceedings of the 2002 IEEE symposium on Volume visualization and graphics |
| Access Restriction | Open |
| Subject Keyword | Update Rate Powerful Method Transfer Function Volume Visualization Interactive Pre-integrated Volume Rendering Ray Integral Pre-integrated Ray Unstructured Grid High Quality Hardware-accelerated Pre-integration Approach High Screen Resolution Rendering Method Actual Performance Graphic Card Cell Projection Technique Two-step Approach Interactive Frame Rate Tetrahedral Grid Pro-jected Tetrahedron Algorithm Unstructured Tetrahedral Grid |
| Content Type | Text |
| Resource Type | Article |
