数字城市三维模型的可视化技术

Visualization of 3D Modeling in a Digital City

城市表面几何对象经过模型化后,都以数字的形式存储在计算机中,只有将其模型进行可视化,才能看到虚拟的城市及模型化后的城市.主要讨论了采用纹理和贴图技术、LOD模型、动态多分辨率的纹理与影像优化技术,以此来提高城市三维模型的表达、可视化效果.

The visualization of digital city terrain modeling is saved in computer. Only after the digital city is virtualed, can the city visualization and the city modeling be displayed. The map texture technology, LOD algorithm,dynamic multi -differentiating texture technology are conductive to the construction of 3D GIS and effective visualization.