数据分页技术的海量三维数据模型动态调度  

Dynamic scheduling of three-dimensional massive model data based on databasepager

作　　者：邓世军[1,2] 王永杰[1,2] 窦华成 党增明[1,2] 程良勇 

机构地区：[1]天津市勘察院 [2]天津市星际空间地理信息工程有限公司,天津300384

出　　处：《测绘科学》2013年第4期97-100,共4页Science of Surveying and Mapping

基　　金：天津市规划局科技计划项目(2010-KJA-12)

摘　　要：三维数字城市模型数据量巨大,渲染负担重,为了实现三维可视化的实时性交互,如何对它们进行高效的组织管理是当前的一个难题。本文提出了科学可行的分层分块组织策略,并在研究OSG数据动态分页调度技术后,分析了该算法存在的缺陷,提出合理的三维海量模型数据调度策略,实现了对海量三维模型库的高效动态调度与分层管理。The amount of three-dimensional digital urban model data and rendering urban are very large, how to manage these data effectively for realizing real-time 3D visualization interaction is a big problem. After researching forms, distribution and data characters of three-dimensional digital urban models, this paper proposed the scientific dividing strategy. It studied OSG data dynamic paging scheduling technology, analyzed the deficiency of the algorithm, and proposed the reasonable scheduling strategy of three-dimensional massive model data. Based on the above research result, this paper realized the effective dynamic scheduling display and layered con- trol of three-dimensional massive model library.

关 键 词：三维数字城市 海量数据组织 分页LOD 数据调度 

分 类 号：P208[天文地球—地图制图学与地理信息工程] P282[天文地球—测绘科学与技术]