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2005
Springer

Real-Time Multiple Scattering in Participating Media with Illumination Networks

10 years 9 months ago
Real-Time Multiple Scattering in Participating Media with Illumination Networks
This paper proposes a real-time method to compute multiple scattering in non-homogeneous participating media having general phase functions. The volume represented by a particle system is supposed to be static, but the lights and the camera may move. Lights can be arbitrarily close to the volume and can even be inside. Real-time performance is achieved by reusing light scattering paths that are generated with global line bundles traced in sample directions in a preprocessing phase. For each particle we obtain those other particles which can be seen in one of the sample directions, and their radiances toward the given particle. This information is stored in an illumination network that allows the fast iteration of the volumetric rendering equation. The illumination network can be stored in two-dimensional arrays indexed by the particles and the directions, respectively. Interpreting these two-dimensional arrays as texture maps, the iteration of the scattering steps can be efficiently ...
László Szirmay-Kalos, Mateu Sbert, T
Added 28 Jun 2010
Updated 28 Jun 2010
Type Conference
Year 2005
Where RT
Authors László Szirmay-Kalos, Mateu Sbert, Tamás Umenhoffer
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