基于八叉树及LOD视相关大规模三维城市模型研究  

Study of Large-scale Three-dimensional City Model Based on Octree and View-dependent LOD Technology

作　　者：孙青[1] 徐霞[2] 

机构地区：[1]山东财经大学东方学院信息管理系,山东泰安271000 [2]山东科技大学信息学院,山东泰安271000

出　　处：《科技通报》2014年第3期91-94,共4页Bulletin of Science and Technology

基　　金：国家自然科学基金项目(51004068)

摘　　要：针对海量数据的大规模三维城市模型可视化,通过分析线性八叉树的特征,提出了基于线性八叉树的LOD层次细节技术,为实现快速可视化,提出了视相关层次细节方法,运用此方法对某三维城市模型进行实验。结果表明,该方法在八叉树基础上,以细节层次及视相关技术提高了三维可视化的速度,又能实现细节观察的需求。In view of the visualization of Large-Scale Three-Dimensional City Model（3DCM） with massive data, level-of-detail（LOD） technology based on linear octree is proposed with analysis of the linear octree characteristics. In addition, In order to realize Fast Visualizing of 3DCM, the view-dependent LOD technology is put forward, and the experimentize study of one city 3DCM is done. The results showed that the new method can improve the performance of 3D Visualization, and observation of details with 3DCM is obtained.

关 键 词：八叉树 细节层次 视相关 三维可视化 多分辨率 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]