Point-based renderign of Trees

Guillaume Gilet 1 Alexandre Meyer 2 Fabrice Neyret 3
1 E-MOTION - Geometry and Probability for Motion and Action
GRAVIR - IMAG - Graphisme, Vision et Robotique, Inria Grenoble - Rhône-Alpes
3 EVASION - Virtual environments for animation and image synthesis of natural objects
GRAVIR - IMAG - Graphisme, Vision et Robotique, Inria Grenoble - Rhône-Alpes, CNRS - Centre National de la Recherche Scientifique : FR71
Abstract : The goal of this paper is the interactive and realistic rendering of 3D trees covering a landscape. The landscape is composed by instantiating one or more block of vegetation on the terrain. A block of vegetation is composed by a single or a compact group of trees. For these blocks of vegetation, we propose a new representation based on triangle+point primitives organized into a regular spatial structure (grid). This structure is defined onto easily adapt the level of details (LOD) of each subpart (cell) of the vegetation element. During the rendering process, we determine a global level of details for each block of vegetation. Then, we refine it for each cell according to the following heuristic: leaves or branches on the rear of tree or inside the forest are statistically less visible than front ones and then can be rendered coarsely. As a result, our method greatly decrease the number of rendered primitives by preserving realism. This allows rendering of large landscape in interactive time, for a camera far away until inside.
Type de document :
Communication dans un congrès
A.K. Peters. Eurographics Workshop on Natural Phenomena 2005, Aug 2005, Dublin, Ireland. p. 67-72, 2005
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https://hal.inria.fr/inria-00402116
Contributeur : Fabrice Neyret <>
Soumis le : lundi 6 juillet 2009 - 16:43:02
Dernière modification le : jeudi 29 mars 2012 - 15:52:52

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  • HAL Id : inria-00402116, version 1

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Guillaume Gilet, Alexandre Meyer, Fabrice Neyret. Point-based renderign of Trees. A.K. Peters. Eurographics Workshop on Natural Phenomena 2005, Aug 2005, Dublin, Ireland. p. 67-72, 2005. <inria-00402116>

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