Generating and Rendering Large Scale Tiled Plant Populations Weier Martin Hinkenjann André Demme Georg Slusallek Philipp 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. Ecosystem simulation Instantiation Poisson Disc Distribution Ray Tracing Terrain rendering Wang-tiles 004 periodical academic journal JVRB - Journal of Virtual Reality and Broadcasting 10(2013) 1 2013 1860-2037 urn:nbn:de:0009-6-36322 10.20385/1860-2037/10.2013.1 weier2013