城市空间二维信息系统与三维虚拟场景一体化研究与应用——BDA城市三维信息系统的设计与实现

The research and application of integrating the 2D GIS and 3D virtual-GIS in digital city information

利用二维平面地图来表示多维世界,是人类认识世界改造世界发展史上产生的一次伟大的飞跃。现阶段二维地理信息系统和三维虚拟现实系统各自具有优缺点,将二者结合解决各自的不足之处,即可实现二维地理信息系统的宏观性、整体性和三维虚拟场景系统的现实性、直观性等的优势互补,克服二维地理信息系统的符号抽象性和三维虚拟现实漫游时的“迷失”。在北京经济技术开发区的城市三维信息系统建设中有效实现了二者的集成与应用。

It was a great leap for human beings using the two-dimensional surface map to expressing the multi-dimensional world in the process of cognizing and changing the nature in the history;and it is also a great leap that we can improve the method of making use of virtual-reality technology expressing and analyzing the real world as we develop the science and technology to a certain level nowadays.Nowadays,2D GIS and 3D Virtual-GIS each has good qualities and shortcomings.If we combine them together we can make better use of their advantages and avoid their disadvantages.In such a case we can roam about where we want to go and won't lose the way.Based on foregoing principles we carried it out in the BDA 3D-City GIS and now it has been proved to be a good way to use dynamic integrating method in the digital city information application system.