Real-time realistic illumination and shading of stratiform clouds

Antoine Bouthors 1 Fabrice Neyret 1 Sylvain Lefebvre 1
1 EVASION - Virtual environments for animation and image synthesis of natural objects
GRAVIR - IMAG - Graphisme, Vision et Robotique, Inria Grenoble - Rhône-Alpes, CNRS - Centre National de la Recherche Scientifique : FR71
Abstract : Realistic rendering of clouds involves solving the complex interaction of light within the cloud and with its environment. Interactive methods achieve efficient cloud rendering by ignoring several lighting effects. However, these effects are visually important, and removing them strongly reduces realism. We present a novel approach for capturing the important effects of multiple anisotropic Mie scattering within cloud layers (i.e., stratiform clouds), and the inter-reflections between the ground and the cloud base under sun and sky illumination. Our model maps well to graphics hardware, enabling the real-time rendering of animated cloud skies over landscapes.
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Antoine Bouthors, Fabrice Neyret, Sylvain Lefebvre. Real-time realistic illumination and shading of stratiform clouds. Eurographics Workshop on Natural Phenomena, Eurographics, Sep 2006, Vienne, Austria. ⟨inria-00402100⟩

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