基于Skyline的三维景观系统的构建

发布时间：2018-03-01 03:27

本文关键词： Skyline GIS 数字城市三维地理信息系统三维景观　出处：《东北林业大学》2013年硕士论文　论文类型：学位论文

【摘要】：随着我国城市化进程深入发展,城市的建设和管理日益面临新的要求和挑战。利用数字化信息化的手段对城市进行管理和决策支持渐渐成为了主流,“数字城市”概念也就应运而生。作为数字城市一部分的城市三维地理信息系统也逐渐成为地理信息系统(GIS)领域的研究热点。本文依据系统开发的原则,结合“数字城市”建设的需求,以上海某实验区为例,对城市三维景观系统进行了构建和研究,并详细介绍了系统的设计思路和实现过程中用到的关键技术。首先对系统整体的构建进行设计,总结设计流程,研究功能需求和实现方法,制定合理的部署方案。然后就是着手数据的准备,三维景观模型的构建是整个系统的基础,为此本文从三维地形模型和三维地物模型的构建着手,探讨了三维景观模型的构建方法。将实验区地物模型基础数据导入3DMAX,合理添加贴图,制作三维地物模型(.x文件),为在三维场景中达到较好显示效果,需要把.x文件转换成xpl2文件,通过IIS进行发布。将影像数据、数字高程模型进行统一坐标系、重投影等前期处理,添加到Skyline软件的TerraBuilder模块中,经过编辑处理操作,生成具有金字塔结构的三维地形模型即mpt格式的文件,通过TerraGate进行发布。然后在TerraExplorerPro中,根据三维地形模型即MPT文件、三维地物模型即xpl2文件和二维矢量模型的发布路径进行加载,生成包含数字城市三维模型的数据集即.FLY文件。最后,在三维景观模型建立的基础上,采用j Query对界面进行布局和设计,利用TerraDeveloper对三维系统进行开发,借助ArcGIS JavaScript API调用Rest服务实现二维加载和操作,从而初步实现了三维基本操作、鹰眼、数据管理、空间分析、信息查询定位等功能。城市三维景观系统以直观的三维景观代替了抽象的地图符号,这就使得地图超出了传统的地理信息符号化、空间信息水平化和地图内容静止化的状态,进入了动态、时空变换、多维的可交互的地图时代。同时,三维地理信息系统技术的日益成熟为海量优秀的三维模型提供了平台支持,优秀模型的加入又为各种空间分析创造了良好的条件。利用良好的城市三维地理信息系统,对城市进行数字化管理,通过直观的三维信息化服务,为城市规划、建设与运营管理、安全管理提供强有力的决策支持,大力提高了城市运作效率。
[Abstract]:With the development of urbanization in China, The construction and management of cities are facing new demands and challenges increasingly. The concept of "digital city" emerges as the times require. Urban three-dimensional geographic information system (3D GIS) has gradually become a hotspot in the field of GIS (Geographic Information system). According to the principle of system development and the needs of "digital city" construction, this paper takes a certain experimental area in Shanghai as an example to construct and study the urban three-dimensional landscape system. The design ideas and key technologies used in the system implementation are introduced in detail. Firstly, the design of the whole system is designed, the design process is summarized, and the functional requirements and implementation methods are studied. It is necessary to prepare the data, and the construction of 3D landscape model is the basis of the whole system. Therefore, this paper starts with the construction of 3D terrain model and 3D terrain model. The method of constructing 3D landscape model is discussed. The basic data of ground object model in experimental area are imported into 3DMAX, the map is added reasonably, and the 3D feature model is made up of .x file, so as to achieve better display effect in 3D scene. It is necessary to convert .x file into xpl2 file and publish it through IIS. The image data, digital elevation model and other pre-processing, such as unified coordinate system and reprojection, are added to the TerraBuilder module of Skyline software and edited. The three-dimensional terrain model with pyramid structure, that is, the file in mpt format, is generated and published by TerraGate. Then, in TerraExplorerPro, according to the three-dimensional terrain model, that is, MPT file, The 3D feature model, that is, the xpl2 file and the two-dimensional vector model, are loaded to generate the data set (.FLY), which contains the 3D model of the digital city. Finally, based on the establishment of the 3D landscape model, the 3D landscape model is built. J Query is used to layout and design interface, TerraDeveloper is used to develop 3D system, and Rest service is called by ArcGIS JavaScript API to realize two-dimensional loading and operation. Thus, the basic operation of 3D, Eagle Eye, data management, spatial analysis, is preliminarily realized. Information query and positioning functions. The city 3D landscape system replaces the abstract map symbol with the intuitionistic 3D landscape, which makes the map go beyond the traditional geographical information symbolization, the spatial information level and the map content static state, entered the dynamic, Space-time transformation, multi-dimensional interactive map age. At the same time, the technology of 3D GIS is becoming more and more mature, which provides the platform support for the massive excellent 3D model. The addition of excellent models creates good conditions for spatial analysis. Using good 3D GIS to manage the city digitally, it can serve the city planning through intuitionistic three-dimensional information service. Construction and operation management and safety management provide strong decision support and improve the efficiency of urban operation.
【学位授予单位】：东北林业大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P208;TP311.52

【相似文献】