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JGTOOLS
2008

Simple Empty-Space Removal for Interactive Volume Rendering

13 years 3 months ago
Simple Empty-Space Removal for Interactive Volume Rendering
Interactive volume rendering methods such as texture-based slicing techniques and ray-casting have been well developed in recent years. The rendering performance is generally restricted by the volume size, the fill-rate and the texture fetch speed of the graphics hardware. For most 3D data sets, a fraction of the volume is empty, which will reduce the rendering performance without specific optimization. In this paper, we present a simple kd-tree based space partitioning scheme to efficiently remove the empty spaces from the volume data sets at the preprocessing stage. The splitting rule of the scheme is based on a simple yet effective cost function evaluated through a fast approximation of the bounding volume of the non-empty regions. The scheme culls a large number of empty voxels and encloses the remaining data with a small number of axis-aligned bounding boxes, which are then used for interactive rendering. The number of the boxes is controlled by halting criteria. In addition to it...
Vincent Vidal 0002, Xing Mei, Philippe Decaudin
Added 13 Dec 2010
Updated 13 Dec 2010
Type Journal
Year 2008
Where JGTOOLS
Authors Vincent Vidal 0002, Xing Mei, Philippe Decaudin
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