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GPU-Assisted High Quality Particle Rendering

Deukhyun Cha, Sungjin Son, Insung Ihm
Department of Computer Science and Engineering, Sogang University, Korea
Computer Graphics Forum, Vol. 28, No. 4., pp. 1247-1255

@conference{cha2009gpu,

   title={GPU-Assisted High Quality Particle Rendering},

   author={Cha, D. and Son, S. and Ihm, I.},

   booktitle={Computer Graphics Forum},

   volume={28},

   number={4},

   pages={1247–1255},

   issn={1467-8659},

   year={2009},

   organization={Wiley Online Library}

}

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Visualizing dynamic participating media in particle form by fully solving equations from the light transport theory is a computationally very expensive process. In this paper, we present a computational pipeline for particle volume rendering that is easily accelerated by the current GPU. To fully harness its massively parallel computing power, we transform input particles into a volumetric density field using a GPU-assisted, adaptive density estimation technique that iteratively adapts the smoothing length for local grid cells. Then, the volume data is visualized efficiently based on the volume photon mapping method where our GPU techniques further improve the rendering quality offered by previous implementations while performing rendering computation in acceptable time. It is demonstrated that high quality volume renderings can be easily produced from large particle datasets in time frames of a few seconds to less than a minute.
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