数字城市建模方法研究与应用  

Research and implementation on modeling method of digital city

作　　者：张超[1,2] 魏占营[1] 王锐[1] 陈学霞[1] 

机构地区：[1]中国测绘科学研究院,北京100039 [2]西安科技大学计算机学院,西安710054

出　　处：《测绘科学》2012年第5期190-193,共4页Science of Surveying and Mapping

基　　金：国家高新技术研究发展计划(863计划):月表形貌与月球构造的信息提取与虚拟月球环境关键技术研究(子课题编号:2010AA122202);中国测绘科学研究院重大科研专项"地理信息集成与共享系统"(7771017)

摘　　要：建筑物模型是大规模数字城市建设的重要组成部分。本文主要讨论了大规模数字城市建设中建筑物的建模方法,包括批量建模方法和重点区域建筑物精细建模方法。文中介绍了建模的基本思想,使用AutoCAD二次开发的插件和OSG(Open Scene Graph)渲染引擎实现了基于DLG(Digital Line Graphic)的模型批量生成和精细模型生成。实验证明,该方法能够快速有效地进行大规模建筑物批量建模,并支持重点区域精细模型的编辑与生成,在最终的三维场景浏览中,模型美观,空间地理坐标精确,量测精度高,符合数字城市的建模要求。Building＇ s model is an important part of the large-scale digital city construction. This thesis discussed the method of modeling, including batch modeling method and detailed modeling method of the primary buildings. This thesis introduced the basic principle of modeling. By using AutoCAD redevelopment plug-in and OSG rendering engine, it realized the generation of batch model- ing and detailed modeling method based on DLG（ Digital Line Graphic）. Experiment proved that this method could effectively and rap- idly create large-scale building models, and also support for the detailed modeling. And then, in the final roaming system, the mod- els had a great sight effect and space geographic coordinates accuracy level, 3-dimension measurements also had a high precision, according with the requirements of the digital city modeling.

关 键 词：DLG 数字城市 OSG 批量建模 精细建模 

分 类 号：P282[天文地球—地图制图学与地理信息工程]