3d City Modeling Research

The information technology that based on computer science has greatly changed the life style of human in the 21^st century .The concept of digital city comes from digital earth and digital city is an important component of digital earth. At the same time digital city is the necessary trend of information technology, undoubtedly the reconstruction of city landscape is the primary step and important content of digital city. The reconstruction of city landscape realized by the three-dimensional GIS based on 3S technology can widely used in many fields such as the management of national soil resource, urban planning, police department, power and telecommunication department, travel etc.This thesis has researched some questions as the following based on the project of "Reconstruction of City Landscape of Huizhou" :1. The way of obtain data and the expression way of the space information in reconstruction of city landscape, Introduced the method and principle i n reconstruction of city landscape.2. Deal with the traditional 2D data by use MapBasic, MapInfo & Delphi for the reconstruction of city landscape; It. included the change of DEM, the data mate of CAD and the texture process etc.3. Studied the select of some high-resolution images in modeling.4. Realized the visualization of city landscape in the test area with IMAGIS platform, concluded the problem in the software of IMAGIS. With the test it can prove that the technique put forward in this thesis can enhance its productivity, save money, reduce the errors by man that can' t be avoid, enhance the speed of reconstruction of city landscape greatly.