Point-based rendering of trees

Guillaume Gilet, Alexandre Meyer, Fabrice Neyret
Eurographics Workshop on Natural Phenomena - 2005
Download the publication : paper1020.pdf [3.8Mo]  
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.

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BibTex references

@InProceedings\{GMN05,
  author       = "Gilet, Guillaume and Meyer, Alexandre and Neyret, Fabrice",
  title        = "Point-based rendering of trees",
  booktitle    = "Eurographics Workshop on Natural Phenomena",
  year         = "2005",
  editor       = "E. Galin, P. Poulin",
  url          = "http://www-evasion.inrialpes.fr/Publications/2005/GMN05"
}

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» Alexandre Meyer : in lab LJK base , in team EVASION base
» Fabrice Neyret : in lab LJK base , in team EVASION base