基于EV-Globe的三维地理信息系统研究

主要研究实现多尺度、多分辨率、不同时期、海量影像数据的快速加载,通过建立域地理三维演示系统,整合了三维模型场景数据、DEM、DOM等数据,实现了直观的全空间三维可视化、海量多元数据集成逼真的三维场景显示的特性、快捷的二三维一体化应用、高效的三维模型渲染与分析、矢量和影像文件的客户端直接加载,实现了城市DEM和DOM的快速加载、三维场景的对比浏览和地下镜头浏览、自然效果的模拟、地理位置的标注、城市场景的飞行浏览以及空间距离面积的测量、各种应用的分析及查询等功能,在将来的研究中,将根据城市建设及规划应用的需求,发挥三维立体展示优势,研究建设、规划辅助系统。

Research on 3D Geographic Information System Based on EV-Globe

This paper mainly studies the rapid loading of image data of multi-scale,multi-resolution,different periods and massive image data.By establishing a domain geographic three-dimensional demonstration system,the 3D model scene data,DEM,DOM and other data are integrated to realize the intuitive full-space 3D visualization.Massive multi-data integration of realistic 3D scene display features,fast 2D and 3D integration applications,efficient 3D model rendering and analysis,vector loading of vector and image files,enabling fast loading of urban DEM and DOM,3D Comparative browsing of scenes and underground lens browsing,simulation of natural effects,annotation of geographic locations,flight browsing of urban scenes,measurement of spatial distance area,analysis and query of various applications,etc.,in future research,will be based on the city.The needs of construction and planning applications will give full play to the advantages of three-dimensional display,research and construction,and planning assistance systems.