“Real-time droplet modeling using color-space environment matting” by Choudhury, Hao and Chandran
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Title:
- Real-time droplet modeling using color-space environment matting
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Abstract:
Amongst all atmospheric phenomena, rain is probably the most commonly used effect to create realistic immersive virtual environments, and to set the mood in movie storytelling. Although not immediately obvious, the beauty of rain emanates from the interplay of the involved light-matter interaction, generating effects of refraction and reflection, coupled with scattering effects. At the core, rain consists of water droplets under the influence of gravity. Current state of the art methods of generating rain are either computationally burdening, or not realistic enough. The key idea we introduce in this paper is to consider these droplets as transparent objects in the environment matting (EM) framework. This enables careful preprocessing to discover the light transport phenomena. We end up with a free-viewpoint real-time technique of simulating realistic droplets and rain in novel environments.
References:
1. Choudhury, B., Singla, D., and Chandran, S. 2008. Fast color-space decomposition based environment matting. In I3D 2008, 1–1.
2. Garg, K., and Nayar, S. 2006. Photorealistic Rendering of Rain Streaks. ACM Transactions on Graphics 25, 3, 996–1002.
3. Lifeng, W., Zhouchen, L., Tian, F., Xu, Y., Xuan, Y., and Bing, K. S. 2006. Real-time rendering of realistic rain. In SIGGRAPH 2006 Sketches, 156.
4. Rousseau, P., Jolivet, V., and Ghazanfarpour, D. 2006. Realistic real-time rain rendering. Computers&Graphics 30, 4, 507–518.
5. Tatarchuk, N. 2006. Artist-directable real-time rain rendering in city environments. In SIGGRAPH 2006 Courses, 23–64.
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