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Variations sur le calcul des vecteurs d'éclairement indirect

Abstract : When it comes to global illumination, the computer graphics community is divided into two parts. The first studies the application of a well-known theory in the physics community (radiosity) which tries to find an equilibrium state of thermal transfers between a set of surfaces. When used to compute digital pictures, the quantities transfered are no longer thermic but still electromagnetic waves: the light. More recently, a new way of investigation has appeared, based on statistical mathematical principles (Monte Carlo methods),in order to compute pictures using a ray-tracing algorithm (the rendering equation) and a numerical solution (path-tracing). The work presented in this thesis belongs to the latter method. The indirect light vectors (ILVs), computed with a ray-tracing algorithm, and based on a Monte-Carlo method, are used to simulate light distribution in a close environment. The research presented here focuses on improving this young technique. To do so, we used several different approaches, based on well-know principles or even entirely new ones. This results in a set of propositions allowing to compute ILVs more quickly and more accurately. These propositions are divided into two distinct parts. The first one studies a single ILV, and the second one offers improvements on displaying indirect illumination, when computed with the ILVs.
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Submitted on : Tuesday, March 26, 2013 - 3:00:35 PM
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  • HAL Id : tel-00804892, version 1


Xavier Serpaggi. Variations sur le calcul des vecteurs d'éclairement indirect. Synthèse d'image et réalité virtuelle [cs.GR]. Ecole Nationale Supérieure des Mines de Saint-Etienne; Université Jean Monnet - Saint-Etienne, 2001. Français. ⟨NNT : 2001EMSE0023⟩. ⟨tel-00804892⟩



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