Smooth Mixed-Resolution GPU Volume Rendering

Beyer, Johanna; Hadwiger, Markus; Möller, Torsten; Fritz, Laura

Smooth Mixed-Resolution GPU Volume Rendering

Files

163-170.pdf (1.18 MB)

Date

2008

Authors

Beyer, Johanna
Hadwiger, Markus
Möller, Torsten
Fritz, Laura

Publisher

The Eurographics Association

Abstract

We propose a mixed-resolution volume ray-casting approach that enables more flexibility in the choice of downsampling positions and filter kernels, allows freely mixing volume bricks of different resolutions during rendering, and does not require modifying the original sample values. A C0-continuous function is obtained everywhere with hardware-native filtering at full speed by simply warping texture coordinates of samples in transition regions. Additionally, we propose a simple but powerful, flat texture packing scheme that supports mixing different resolution levels in a single 3D volume cache texture with a very simple and fast address translation scheme. Although this packing constrains full scalability, it enables mixing different resolution levels in GPU-based ray-casting with only a single rendering pass. We demonstrate our approach on large real-world data, obtaining a continuous scalar function and shading at brick boundaries, using single-pass ray-casting at real-time frame rates.

        @inproceedings{:10.2312/VG/VG-PBG08/163-170
,
booktitle = {IEEE/ EG Symposium on Volume and Point-Based Graphics
},
editor = {Hans-Christian Hege and David Laidlaw and Renato Pajarola and Oliver Staadt
},
title = {{Smooth Mixed-Resolution GPU Volume Rendering
}},
author = {Beyer, Johanna and 
Hadwiger, Markus and 
Möller, Torsten and 
Fritz, Laura
},
year = {2008
},
publisher = {The Eurographics Association
},
ISSN = {1727-8376
},
ISBN = {978-3-905674-12-5
},
DOI = {/10.2312/VG/VG-PBG08/163-170
}
}