中文摘要：

随着近年来中国出境客流井喷式增长，国内用户对境外交通地图产品的需求不断增加。长期以来，境外道路数据因其数据资源较少，道路标准与国内存在较大差异，导致国内用户对其理解与应用等方面都存在着较大难度。境外道路数据在三维环境下的可视化研究工作旨在增强地图表现力，提高用户在难以接触实地情况下的快速认知水平。本文基于空间认知理论，结合地图学和色彩学等学科的知识，对境外矢量道路数据的三维可视化方法进行研究，提出了基于GoogleEarth平台OpenStreetMap（OSM）道路数据的二级解译模式和三维环境下道路符号中的视觉层次建立方法，并在EV—Globe海量空间信息平台的三维环境中进行实验。

英文摘要：

With the explosive increase of overseas tourist, the demand of overseas traffic maps for Chinese users have raised continual-ly. Overseas road data is difficult to understand, describe and apply for Chinese users because it has a small amount of resources. Re-search on the 3D visualization of overseas road data aim to reinforces the expressive force of maps and improves thecognition capabilitywhen user could not easily to approach the field. According to theories of spatial cognition, cartography and chromatics, this paper pro-pose a two level interpreting mode of OpenStreetMap（OSM） road data based on Google Earth, then introduce a method of establishingvisual hierarchy for road symbol in 3D environment and experiment in EV - Globe.