森林三维真实感建模与可视化LOD技术研究

doi:10.7523/j.issn.2095-6134.2011.3.007

中国科学院大学学报 ›› 2011, Vol. 28 ›› Issue (3): 322-327.DOI: 10.7523/j.issn.2095-6134.2011.3.007

森林三维真实感建模与可视化LOD技术研究

刘真余, 芮小平, 董承玮

中国科学院研究生院资源与环境学院, 北京 100049

收稿日期:2010-04-12 修回日期:2010-08-03 发布日期: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

LIU Zhen-Yu, RUI Xiao-Ping, DONG Cheng-Wei

College of Resources and Environment, Graduate University, Chinese Academy of Sciences, Beijing 100049, China

Received:2010-04-12 Revised:2010-08-03 Published:2011-05-15

摘要/Abstract

摘要：

基于随机参数化L系统的形式化语言对树木进行三维构模.依据树木与视点的空间关系,动态划分了基于林分的层次细节(LOD).对不同的细节层次采用不同的模型进行处理以达到真实感绘制.通过调整L系统的迭代、分层存储树木模型、十字交叉画树等策略分别对各个层次进行渲染,并对层级细节的渲染效率进行了比较.实验证明,本方法能够很好地模拟三维森林虚拟系统,可以满足森林三维场景的真实感和实时可视化效果的要求.

关键词: 森林, L系统, 三维可视化, 层次细节

Abstract:

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

中图分类号:

TP391

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.

LIU Zhen-Yu, RUI Xiao-Ping, DONG Cheng-Wei. Study on realistic modeling of three-dimensional forest and visualization based on LOD technology[J]. , 2011, 28(3): 322-327.

参考文献

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森林三维真实感建模与可视化LOD技术研究

Study on realistic modeling of three-dimensional forest and visualization based on LOD technology

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