Research On The Application Of The 3D Visualization GIS In City Planning

We have gradually entered a new world which character is digitalization,with the development of the information technology. Digitalization gradually infiltrates into our city including the work of city planning,construction,management and services,and also acts a more and more important role as the methods for building a continuable city. At present, visualization in city 3D scene is core technique of Cyber City. Querying and anglicizing information and base on city 3D scene not only provide vision taste for user, make user have geist cognition for city construction, but also make decision-maker, designer and user have more lifelike, impersonal and rational cognition for status in quo of city layout and blueprint of design. So we need these new technologies of 3D-GIS and visualization to aid the city planner and decision maker to make plans and decisions, and to provide the information platform for public participation city planning.In this paper, the technique of 3D Visualization GIS and the application of 3D-GIS in city planning were researched. The main work as the following:(1)How to acquire and deal with 3D data of terrain data, construction data and other data which were needed in 3D city model was reseArched in this part.(2)Building and displaying the 3D city model suited for aiding city planning, and querying and analyzing information from the 3D city model.(3)The methods and application of 3D Visualization GIS in city planning making and managements.(4)Some instances and examples of the application of 3D Visualization GIS in city planning making and managements.