Real-time Rendering of Heterogeneous Translucent Objects with Arbitrary Shapes

Yajun Wang 1, 2, 3 Jiaping Wang 3 Nicolas Holzschuch 1 Kartic Subr 1 Jun-Hai Yong 4 Baining Guo 2, 3
1 ARTIS - Acquisition, representation and transformations for image synthesis
Inria Grenoble - Rhône-Alpes, LJK - Laboratoire Jean Kuntzmann, INPG - Institut National Polytechnique de Grenoble
Abstract : We present a real-time algorithm for rendering translucent objects of arbitrary shapes. We approximate the scattering of light inside the objects using the diffusion equation, which we solve on-the-fly using the GPU. Our algorithm is general enough to handle arbitrary geometry, heterogeneous materials, deformable objects and modifications of lighting, all in real-time. In a pre-processing step, we discretize the object into a regular 4-connected structure (quadgraph). Due to its regular connectivity, this structure is easily packed into a texture and stored on the GPU. At runtime, we use the quadgraph stored on the GPU to solve the diffusion equation, in real-time, taking into account the varying input conditions: incoming light, object material and geometry. We handle deformable objects, provided the deformation does not change the topological structure of the objects.
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Journal articles
Computer Graphics Forum, Wiley, 2010, 29 (2), pp.497-506. 〈10.1111/j.1467-8659.2009.01619.x〉
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Submitted on : Thursday, December 31, 2009 - 5:29:31 PM
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Yajun Wang, Jiaping Wang, Nicolas Holzschuch, Kartic Subr, Jun-Hai Yong, et al.. Real-time Rendering of Heterogeneous Translucent Objects with Arbitrary Shapes. Computer Graphics Forum, Wiley, 2010, 29 (2), pp.497-506. 〈10.1111/j.1467-8659.2009.01619.x〉. 〈inria-00443634〉

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