【摘要】 传统的三维城市空间数据库中,在实现空间数据共享、互操作以及满足各应用者对数据的特殊要求方面存在着诸多未能解决的问题。通过对OGC标准中CityGML三维模型描述方法的研究,从LOD、坐标系统、拓扑定义方面进行分析研究,从而为城市三维模型信息的描述与管理提供更优的方法。更多还原

【Abstract】 The traditional storage of the three-dimensional urban space database has so many difficult problems at spatial data sharing,interoperability and meeting the needs of different applications.In this article we’ll analyze the CityGML standard which can describe this models from the LOD,coordinate systems,topology analysis of the definition of research to provided a better method to describe and manage the three-dimensional model for cities.更多还原