NDLI: Acceleration techniques for GPU-based volume rendering

Content Provider	IEEE Xplore Digital Library
Author	Kruger, J. Westermann, R.
Copyright Year	2003
Description	Author affiliation: Comput. Graphics & Visualization Group, Tech. Univ. Munich, Germany (Kruger, J.; Westermann, R.)
Abstract	Nowadays, direct volume rendering via 3D textures has positioned itself as an efficient tool for the display and visual analysis of volumetric scalar fields. It is commonly accepted, that for reasonably sized data sets appropriate quality at interactive rates can be achieved by means of this technique. However, despite these benefits one important issue has received little attention throughout the ongoing discussion of texture based volume rendering: the integration of acceleration techniques to reduce per-fragment operations. In this paper, we address the integration of early ray termination and empty-space skipping into texture based volume rendering on graphical processing units (GPU). Therefore, we describe volume ray-casting on programmable graphics hardware as an alternative to object-order approaches. We exploit the early z-test to terminate fragment processing once sufficient opacity has been accumulated, and to skip empty space along the rays of sight. We demonstrate performance gains up to a factor of 3 for typical renditions of volumetric data sets on the ATI 9700 graphics card.
Sponsorship	IEEE Comput. Soc. Tech. Comm. on Visualisation and Graphics
Starting Page	287
Ending Page	292
File Size	410439
Page Count	6
File Format	PDF
ISBN	0780381203
DOI	10.1109/VISUAL.2003.1250384
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-10-19
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Acceleration Rendering (computer graphics) Hardware Computer graphics Sampling methods Data visualization Three dimensional displays Computer displays Performance gain Chromium
Content Type	Text
Resource Type	Article

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