This paper presents an approach for vivid representations of foliage based on implicit surfaces. It approximates the complex lighting interaction within the foliage and enables a clear illustration of its general shape and local density, thus supporting the three-dimensional depth cue of the viewer. Due to its straightforward implementation as a preprocessing step that only adjusts the normal vectors of the geometry, this method has no additional memory requirements during the rendering process, and is especially applicable to real-time visualizations.
@inproceedings{Luft2006ExpressiveIlluminationFoliage,
author = {T. Luft, M. Balzer, O. Deussen},
booktitle = {Konstanzer Schriften in Mathematik und Informatik},
title = {Expressive Illumination of Foliage Based on Implicit Surfaces},
url = {http://graphics.uni-konstanz.de/publikationen/2007/foliage/website/},
volume = {220},
year = {2006}
}