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Issue No.06 - November/December (2010 vol.16)
pp: 1533-1540
Roland Fraedrich , Technische Universität München
Stefan Auer , Technische Universität München
Rüdiger Westermann , Technische Universität München
High quality volume rendering of SPH data requires a complex order-dependent resampling of particle quantities along the view rays. In this paper we present an efficient approach to perform this task using a novel view-space discretization of the simulation domain. Our method draws upon recent work on GPU-based particle voxelization for the efficient resampling of particles into uniform grids. We propose a new technique that leverages a perspective grid to adaptively discretize the view-volume, giving rise to a continuous level-of-detail sampling structure and reducing memory requirements compared to a uniform grid. In combination with a level-of-detail representation of the particle set, the perspective grid allows effectively reducing the amount of primitives to be processed at run-time. We demonstrate the quality and performance of our method for the rendering of fluid and gas dynamics SPH simulations consisting of many millions of particles.
Particle visualization, volume rendering, ray-casting, GPU resampling
Roland Fraedrich, Stefan Auer, Rüdiger Westermann, "Efficient High-Quality Volume Rendering of SPH Data", IEEE Transactions on Visualization & Computer Graphics, vol.16, no. 6, pp. 1533-1540, November/December 2010, doi:10.1109/TVCG.2010.148
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