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Modélisation multi-échelle procédurale de scènes animées

Frank Perbet 1
1 EVASION - Virtual environments for animation and image synthesis of natural objects
GRAVIR - IMAG - Laboratoire d'informatique GRAphique, VIsion et Robotique de Grenoble, Inria Grenoble - Rhône-Alpes, CNRS - Centre National de la Recherche Scientifique : FR71
Abstract : In computer graphics, 3D animated scenes are more and more rich and detailed. But the current techniques for managing such scenes cannot handle a wide range of observation scales. For example, creating models that allow to zoom from a galactic scale to an atomic scale is a very diffcult task. Our goal is to address this problem in the scope of real-time visualization using standard computers. First, we show that multi-scale procedural modeling is particularly well suited to solve this problem. More precisely, we use complexification modeling which describes a model by its coarse representation and a set of functions which adds local details until the required precision according to perceptual criteria. We introduce a new formalism based on the C++ language which is able to describe a large set of 3D animated models over a large range of scales. We propose a tool which implements this formalism called DynamicGraph. This tool consists of a specialized graphical interface and a real-time rendering algorithm which efficently evaluates the visibility and the required precision. Finally, we illustrate the potential of this approach by several case studies.
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Submitted on : Friday, October 22, 2010 - 11:07:48 AM
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  • HAL Id : tel-00528630, version 1

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IMAG | CNRS | INRIA | UGA

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Frank Perbet. Modélisation multi-échelle procédurale de scènes animées. Informatique [cs]. Institut National Polytechnique de Grenoble - INPG, 2004. Français. ⟨tel-00528630⟩

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