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http://dx.doi.org/10.7583/JKGS.2012.12.2.053

Acceleration of GPU-based Volume Rendering Using Vertex Splitting  

Yoo, Seong-Yeol (Dept. of Computer Science & Information Engineering, Inha University)
Lee, Eun-Seok (Dept. of Computer Science & Information Engineering, Inha University)
Shin, Byeong-Seok (Dept. of Computer Science & Information Engineering, Inha University)
Publication Information
Journal of Korea Game Society / v.12, no.2, 2012 , pp. 53-62 More about this Journal
Abstract
Visualizing a volume dataset with ray-casting which of visualization methods provides high quality image. However it spends too much time for rendering because the size of volume data are huge. Recently, various researches have been proposed to accelerate GPU-based volume rendering to solve these problems. In this paper, we propose an efficient GPU-based empty space skipping to accelerate volume ray-casting using octree traversal. This method creates min-max octree and searches empty space using vertex splitting. It minimizes the bounding polyhedron by eliminating empty space found in the octree traveral step. The rendering results of our method are identical to those of previous GPU-based volume ray-casting, with the advantage of faster run-time because of using minimized bounding polyhedron.
Keywords
volume rendering; ray-casting; octree traversal; empty space skipping; vertex splitting;
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