Issue No. 03 - May-June (2013 vol. 33)
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/MCG.2013.19
N. Holzschuch , INRIA Grenoble, Grenoble, France
J-D Gascuel , LJK, France
Some materials, such as coffee, milk, or marble, have a soft translucent aspect because of subsurface scattering. Light enters them and gets scattered several times before leaving in a different place. A full representation of subsurface-scattering effects in illumination simulation is computationally expensive. The main difficulty comes from multiple scattering events. The high number of events increases the results' uncertainty, requiring more computation time. However, a strong correlation exists between the surface effects of multiple scattering and the effects after just two scattering events. This knowledge can help accelerate multiple-scattering effects. In particular, researchers have exploited this knowledge to provide a model and implementation for fast computation of double-scattering events using a precomputed density function stored compactly.
Materials, Scattering, Photonics, Computational modeling, Lighting, Approximation methods, Rendering (computer graphics), Three dimensional displays, Shadow mapping
N. Holzschuch and J. Gascuel, "Double- and Multiple-Scattering Effects in Translucent Materials," in IEEE Computer Graphics and Applications, vol. 33, no. 3, pp. 66-76, 2013.