| 森林三维真实感建模与可视化LOD技术研究 |
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| 引用本文： | 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].中国科学院研究生院学报,2011,28(3). |
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| 作者姓名： | 刘真余 芮小平 董承玮 |
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| 作者单位： | 中国科学院研究生院资源与环境学院,北京,100049 |
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| 基金项目： | 国家自然科学基金，中国科学院研究生院院长基金 |
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| 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.
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| 关 键 词： | 森林 L系统 三维可视化 层次细节 |
Study On realistic modeling of three-dimensional forest and visualization based on LOD technology |
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| LIU Zhen-Yu,RUI Xiao-Ping,DONG Cheng-Wei.Study On realistic modeling of three-dimensional forest and visualization based on LOD technology[J].Journal of the Graduate School of the Chinese Academy of Sciences,2011,28(3). |
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| Authors: | LIU Zhen-Yu RUI Xiao-Ping DONG Cheng-Wei |
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| Institution: | LIU Zhen-Yu,RUI Xiao-Ping,DONG Cheng-Wei(College of Resources and Environment,Graduate University,Chinese Academy of Sciences,Beijing 100049,China) |
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| 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.E... |
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| Keywords: | forest L-system three-dimensional visualization LOD |
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