虚拟城市可视化的研究与实现

“虚拟城市”技术是“数字地球”技术的重要组成部分,其研究戈键足怎样在Internet／Intranet上建立城市的虚拟可视化模型,是计算机科学、信息科学、地球科学、系统科学的有机融合。该文概括了“数字地球／虚拟城市”的基本概念,探讨基于Web、2DVR、3DVR和GIS柏结合的技术开发虚拟城市系统的新仿真模式及其关键技术和整体开发方案。提出了虚拟场景与外界交互的手段和方法,着重研究全景图、三维模型和网络动态交互技术结合实现交互式网络虚拟城市漫游的方法和实现过程,并给出了运行实例。通过该系统可以为城市规划、交通旅游等提供动态可视化显示的全新技术支持。

Visual Research and Realization of Virtual City

The technology of "virtual city" is an important component of "digital earth" technology, its key is how to set up virtual visual model of city at Internet/Intranet, it is the organic integration of computer science, information science, geoscience and systematic science. This text summarizes the basic conception of "digital earth / the virtual fictitious city " , probes into the combined technology based on Web, 2DVR, 3DVR and GIS and develops a new emulation mode for the virtual urban system, key technologies and the whole scheme. This paper offers the interactive methods of the virtual world and outside world, the method of using the panorama, three dimensional model and active server pages to realize interactive network virtual city roam. Using the system we can offer the brand - new visual technical support for urban planning, tourism etc.