Generating and Rendering Large Scale Tiled Plant Populations

Martin Weier, André Hinkenjann, Georg Demme, Philipp Slusallek
JVRB - Journal of Virtual Reality and Broadcasting, Volume 10, Number 1 - 2013

Abstract

Generating and visualizing large areas of vegetation that look natural makes terrain surfaces much more realistic. However, this is a challenging field in computer graphics, because ecological systems are complex and visually appealing plant models are geometrically detailed. This work presents Silva (System for the Instantiation of Large Vegetated Areas), a system to generate and visualize large vegetated areas based on the ecological surrounding. Silva generates vegetation on Wang-tiles with associated reusable distributions enabling multi-level instantiation. This paper presents a method to generate Poisson Disc Distributions (PDDs) with variable radii on Wang-tile sets (without a global optimization) that is able to generate seamless tilings. Because Silva has a freely configurable generation pipeline and can consider plant neighborhoods it is able to incorporate arbitrary abiotic and biotic components during generation. Based on multi-level instancing and nested kd-trees, the distributions on the Wang-tiles allow their acceleration structures to be reused during visualization. This enables Silva to visualize large vegetated areas of several hundred square kilometers with low render times and a small memory footprint.

BibTex references

@Article{WHDS13,
  author       = {Weier, Martin and Hinkenjann, Andr{\'e} and Demme, Georg and Slusallek, Philipp},
  title        = {Generating and Rendering Large Scale Tiled Plant Populations},
  journal      = {JVRB - Journal of Virtual Reality and Broadcasting},
  number       = {1},
  volume       = {10},
  year         = {2013},
}

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» Georg Demme
» Philipp Slusallek