Research On The Critical Technology Of 3D Visual Simulation On Road Network In City

The road planning visualization ,it is not only a new way for the planning designers to display their creations, but also a virtual platform on which many new or old road design can be easily analyzed, estimated and contrasted together by the planning designers and the public. With the rapid development of the visualization technique and simulation technique, it is obvious that this technique will be widely used in road planning, road construction and road management in the future. For this reason, in this paper, the focus is given to critical technology of the 3D visualization on road planning.Firstly, the principles of the road planning and the development of 3D visualization are introduced. And then, they are put together, the importance of the 3D visualization on road planning is pointed out. The key technology which is used in realizing the 3D visualization on road planning is discussed. Based on the practice of project, an overall technology scheme to establish a system of the 3D visualization on road planning is presented, the study of 3D model terrain creating, 3D model road creating, scene optimizing and system integrating are made. At last, the road planning 3D visualization system is established on the base of Multigen and Vega.The 3D visualization system on road planning is still a basal application of visualization and GIS technology. The more developing of those technologies, the more possibilities of a new direction for urban planning will be found.