数字城市建设中的3维建模理论研究

摘要

数字城市是数字地球建设计划的核心组成部分,是集成了地理信息系统、大比例尺地图测绘、计算机等相关技术后把城市的历史、现在和未来的状态利用信息技术进行数字化虚拟实现的城市工程项目.本文在国内外数字城市的研究与发展现状的基础上,揭示出3维数字城市建设是未来城市建设的必然趋向,分析了建立城市3D模型的数据来源以及获取方法,并给出了数字城市3D模型实例及其实现的关键技术,最后探讨数字城市3维建模的方法.对数字城市建设有一定的指导意义.%Digital city is a core part of construction of digital earth plan.It is integrated with geographic information system,large scale mapping and related technologies,such as computers,after the city's history,present and future state of the use of information technology for digital city project of virtual implementation.Based on the research at home and abroad on the basis of the research and development status of digital city,reveal the 3-d digital city construction is the inevitable trend of future urban construction,then analyzes the source of data for 3 d city model is set up and access methods,and puts forward the 3 d digital city model instance and its key technology,the digital city 3 d modeling are discussed.In this paper,the digital city construction has certain guiding significance.