Virtual Global–A new visualization system for virtual geographic environment

摘要：

Virtual Global,a new visualization system is designed and developed by Key Laboratory of Virtual Geographic Environment (Nanjing Normal University) as the visualization platform of the virtual geographic environment.In order to represent various types of data about geographic information,3D scene,geographic models and geographic phenomena simulation in the world wide,Virtual Global is designed in which terrain,imagery data,various types of 3D models and annotation can be represented.Distributed data service and the transfers of compressed data on the internet are supported,too.The high speed transmission of imagery data,large scale terrain real-time roaming,automatic annotation placement and so forth are also implemented.The spatial scattered grid which can satisfy the modeling and simulating of the geography effectively is integrated into this system.Distributed data management is used and massive data is stored on different computer.Progressive data transmission is introduced and data is downloaded according to the requirement of the client.The frequency of access to the internet is reduced.

关键词： Virtual Global Virtual Geographic Environment Vector Data Spatial Analysis

作者: Jingwei Shen Yongjun Wang Hong Tao Min Chen Hongjun Su

作者单位: Key Laboratory of Virtual Geographic Environment (Ministry of Education),Nanjing Normal University,Nanjing,Jiangsu Province,210046,P.R.China

会议类型: 国际会议

会议名称: 第16届国际地理信息科学与技术大会(16th International Conference on GeoInformatics and the Joint Conference)

会议地点: 广州

会议语种:英文

在线出版日期: 2008-06-28（万方平台首次上网日期，不代表论文的发表时间）