Continuous LOD Model of Coniferous Foliage

—Interactive and realistic rendering of forest is a challenge due to a huge amount of tiny geometric detail. We present an approach to construct continuous level of detail (LOD) models for coniferous foliage geometry. The models are defined with multi-resolution cylinders and semi-transparent lines. When a coniferous leaf is wider than one pixel on the image space, cylinder is used to represent it; otherwise, line will be used. And Line transparency is applied to show the sub-pixel detail of foliage needles. In addition, lines are further merged to a new line when they are too thin on the image space, so that the number of lines will be decreased when they are farther from the viewer. All steps of simplification are recorded in preprocessing. During rendering, appropriate approximation models will be established for different viewpoints automatically on the fly, and the transition from high resolution to a lower one is continuous. Compared with other foliage simplification methods, o...

• Type: Journal
• Year: 2007
• Where: IJVR
• Authors: Qingqiong Deng, Xiaopeng Zhang, Sebastien Gay, Xiangdong Lei
• Keywords: Coniferous Foliage, Coniferous Foliage Geometry, IJVR 2007, Image Space