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| HAL : hal-00652076, version 1 |
| DOI : 10.1109/TVCG.2011.282 |
| Voir la fiche détaillée |  BibTeX,EndNote,... |
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| IEEE Transactions on Visualization and Computer Graphics 18, 10 (2012) 1591-1602 |
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| Real-Time Rendering of Rough Refraction |
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| Charles De Rousiers 1Adrien Bousseau 2 |
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| (10/2012) |
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| We present an algorithm to render objects made of transparent materials with rough surfaces in real-time, under all-frequency distant illumination. Rough surfaces cause wide scattering as light enters and exits objects, which significantly complicates the rendering of such materials. We present two contributions to approximate the successive scattering events at interfaces, due to rough refraction: First, an approximation of the Bidirectional Transmittance Distribution Function (BTDF), using spherical Gaussians, suitable for real-time estimation of environment lighting using pre-convolution; second, a combination of cone tracing and macro-geometry filtering to efficiently integrate the scattered rays at the exiting interface of the object. We demonstrate the quality of our approximation by comparison against stochastic ray-tracing. Furthermore we propose two extensions to our method for supporting spatially varying roughness on object surfaces and local lighting for thin objects. |
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| 1 : | ARTIS (INRIA Grenoble Rhône-Alpes / LJK Laboratoire Jean Kuntzmann) |
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CNRS : UMR5224 – INRIA – Laboratoire Jean Kuntzmann – Université Joseph Fourier - Grenoble I – Institut National Polytechnique de Grenoble (INPG) |
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| 2 : | REVES (INRIA Sophia Antipolis) |
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INRIA |
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| 3 : | Computer science department [University College London] (UCL-CS) |
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University College of London (UCL) |
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| 4 : | Electrical Engineering and Computer Science [Berkeley] (EECS) |
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University of California, Berkeley |
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| Domaine | : | Informatique/Synthèse d'image et réalité virtuelle |
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| hal-00652076, version 1 | |
| http://hal.inria.fr/hal-00652076 | |
| oai:hal.inria.fr:hal-00652076 | |
| Contributeur : Nicolas Holzschuch | |
| Soumis le : Mercredi 14 Décembre 2011, 18:12:47 | |
| Dernière modification le : Jeudi 27 Septembre 2012, 18:25:01 | |
