High-Quality Hardware-Based Ray-Casting Volume Rendering Using Partial Pre-Integration

In this paper, we address the problem of the interactive volume rendering of unstructured meshes and propose a new hardware-based ray-casting algorithm using partial pre-integration. The proposed algorithm makes use of modern programmable graphics card and achieves rendering rates competitive with f...

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Bibliographic Details
Published inXVIII Brazilian Symposium on Computer Graphics and Image Processing (SIBGRAPI'05) pp. 273 - 280
Main Authors Espinha, R., Celes, W.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2005
Subjects
Algorithm design and analysis
Computer graphics
Computer science
Costs
Data visualization
Hardware
Inspection
Proposals
Rendering (computer graphics)
Transfer functions
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Summary:In this paper, we address the problem of the interactive volume rendering of unstructured meshes and propose a new hardware-based ray-casting algorithm using partial pre-integration. The proposed algorithm makes use of modern programmable graphics card and achieves rendering rates competitive with full pre-integration approaches (up to 2M tet/sec). This algorithm allows the interactive modification of the transfer function and results in high-quality images, since no artifact due to under-sampling the full numerical pre-integration exists. We also compare our approach with implementations of cell-projection algorithm and demonstrate that ray-casting can perform better than cell projection, because it eliminates the high costs involved in ordering and transferring data.
ISBN:9780769523897
0769523897
ISSN:1530-1834
2377-5416
DOI:10.1109/SIBGRAPI.2005.29