介绍了数字城市的框架体系和三维城市模型的建模过程，探讨了城市建筑物的CSG建模方法。
This paper introduces the frame system of digital city and the process of 3d city model, discusses CSG model method of buildings.
其次，重点研究了三维城市模型的构建，包括三维地形模型的建立，卫星影像与三维地形模型的融合。
Secondly, put more emphasis on the reconstruction of 3D city model, which involves the 3D terrain and the fuse of Ikonos and terrain.
数码城市往往涉及大范围复杂的自然与人文地物建模，尤其困难的是建立覆盖整个城市范围的三维城市模型。
CyberCity often involves the modeling of Wide-field complex ground object of nature and humanity, especially difficulty in building the three-dimensional model which cover the whole city.
本文在对数字城市的研究体系和三维城市模型进行分析的基础上，着重对数字城市建筑物的构造实体几何(CSG)建模方法进行了研究。
On the basis of analysis of digital city research framework and existing 3d urban model, this paper researches mainly the techniques of building model based on CSG in digital city.
构成区域环境的城市结构以三维因子分析来进行量化分析，此3项因子为：三维的阴影图、航拍图和立体模型。
The urban structure that forms the regional environment is quantitatively analyzed rising fractal dimensional analyses of a 3-dimension shaded picture, an aerial photo, and a 3-dimension model.
提出了纹理库和模型库的思想，确立了城市景观建筑物三维重建的整体思路。
The idea of texture lab and model lab and the unitary thought of city landscape's 3D reconstruction were put forward.
接着介绍了城市三维模型建模原理，针对目前城市建模中存在的问题，提出了混合使用建模技术的方法。
Then the basic principle of city modeling has been introduced, and due to some existing problems, the method of mixed modeling technology is given.
此外，我做的项目总体来说范围很广，从规划，城市设计到细部材料和三维模型。
Also, the projects that I work on generally have a great range, from planning, urban design, to detailing materials and 3d modeling.
构造城市实物模型是三维城市地理信息系统(3dUGIS)应该解决的关键问题。
Building practicality model of city spatial objects is a key question which should be solved in 3d UGIS.
江苏省盐城市地下含水系统为一复合含水层系统，采用真三维模型，将其概化为三度空间上的非均质各向异性。
The groundwater system of Yancheng in Jiangsu Province is a compound aquifer system, three dimensional numerical model is applied and deals with it as inhomogeneous anisotropy aquifer in spatial.
首先分析了海外人才的流动规律，进而构建了人才集聚、高技术产业集聚与城市化的三维模型。
It first analyzes the regulation of the flow of overseas talented personnel and then forms a three-dimensional model of talents convergence, high-tech industrial agglomeration and urbanization.
而城市三维景观重建的核心内容是景观模型的建立，其中包括地貌模型、地物模型的建立。
The core of the 3d reconstruction of the city landscape modeling, including the landform modeling and geographical object modeling.
而在虚拟城市的构建中，城市景观模型的建立与三维可视化更是其基础核心技术。
And the city scene model and 3d visualization are the central technology in the processing of constructing the virtual city.
在对城市景观主要建模对象进行分类的基础上，建立了三维空间数据结构，实现了地形和地物模型三维重建的系列算法。
Based on the classification of the primary modeling objects in the city scene, we separately rebuild the model of the terrain and objects according to the 3d spatial data structure.
构造城市实物模型是三维城市地理信息系统(3dUGIS)解决的关键问题之一。
Building practicality model of city spatial objects is a key question which should be solved in 3d UGIS.
GIS学者在研究三维地形可视化和数字城市可视化时，普遍在地形、城市建筑物的几何模型上叠加了纹理。
The scholars in the GIS domain always add adding texture on geometry model of the 3D things in the study on the 3D terrain and the digital city.
城市三维模型的建立能够提供给人们逼真的城市三维场景，在这个场景中，可以轻松实现三维场景浏览、都市光影分析等功能。
The establishment of the virtual city can provide to the people realistic three-dimensional scene of the city, in which you can easily view three-dimensional scene and urban lighting analysis feature.
基于WEB的城市三维建模与可视化包括三个部分：城市三维数据，模型的构造及显示程序，与用户的交互。
The WEB-based 3-D city modeling and visualization method includes three parts:3-D city data, program for modeling and displaying, interaction with users.
基于WEB的城市三维建模与可视化包括三个部分：城市三维数据，模型的构造及显示程序，与用户的交互。
The WEB-based 3-D city modeling and visualization method includes three parts:3-D city data, program for modeling and displaying, interaction with users.
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