Lifeng Wang
Sing Bing Kang
ABSTRACT
We propose a new GPU based technique to render realistic rain in real-time. It consists of two parts: off-line image analysis of rain videos, and real-time particle-based synthesis of rain. Videos of real rain are analyzed to extract the rain mattes; random samples of these rain stroke mattes are then used for online synthesis. We incorporate pre-computed radiance transfer (PRT) in our particle system to take into account the scene radiance. The transfer function of a raindrop can be highly efficiently evaluated with a closed-form solution. Our approach achieves high realism with low computation cost and a small memory footprint. Our technique applies to a variety of scenarios, from synthetic 3D scenes to real videos.
Supplemental Material
- Ati Demo, 2005. ATI Radeon series X1000, Demo: ToyShop. http://www.noticias3d.com/articulo.asp?idarticulo=527&pag=10.Google Scholar
- Starik, S., and Werman, M. 2002. Simulation of rain in video. In Proc. 3rd Int'l Workshop on Texture Analysis and Synthesis, 95--100.Google Scholar
Index Terms
- Real-time rendering of realistic rain
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