收稿日期: 2010-04-12
修回日期: 2010-08-03
网络出版日期: 2011-05-15
基金资助
国家自然科学基金(40901191)和中国科学院研究生院院长基金资助
Study on realistic modeling of three-dimensional forest and visualization based on LOD technology
Received date: 2010-04-12
Revised date: 2010-08-03
Online published: 2011-05-15
刘真余 , 芮小平 , 董承玮 . 森林三维真实感建模与可视化LOD技术研究[J]. 中国科学院大学学报, 2011 , 28(3) : 322 -327 . DOI: 10.7523/j.issn.2095-6134.2011.3.007
Trees are one of the most important natural features in the forest virtual scene rendering. The three-dimensional visualization model is proposed based on formal language of parametric and random L-system. According to the viewpoint in the spatial position, the model dynamically classifies stand levels of details which are described by various processing for rendering. By adjusting L-system iteration, models of hierarchical storage of tree, and bill-board approach, these levels of details are rendered separately. Experimental results show that this approach is an effective way to simulate forest virtual scene and it meets three-dimensional reality and real-time visualization requirements.
Key words： forest; L-system; three-dimensional visualization; LOD
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