介绍了用路途全景图（Route panorama）组成道路网并融入地理信息系统的研究成果.为提供比道路地图更为详尽的景观信息,本文用路途全景图建立了一个可漫步的虚拟城市.路途全景图具有数据量小,形式连续,街道覆盖完全,高效采集和易于扩充等特色,可作为一个沿街建筑物和设施的图像索引.研究了获取街道景观的扫描系统,对一市区街道进行完全扫描,并对路途全景图进行信息检索.与利用3维图形建立城市模型相比,路途全景图能在因特网上实时传送,并在大区域内作连续的可视导航.其结果可应用于虚拟旅行、城市导引、历史研究、古迹保护、风土和生活方式记录以及灾害应急控制等.

This paper explores the route panorama and its integration with geographic information system for a visual indexing of a route and city.A more detailed layer than a road map in GIS systems associated with real cityscapes is introduced and implemented.Sequential route panoramas with small amount of data,continuous coverage of route scenes are acquired along all streets in an urban area.We construct an Internet based virtual city for free navigation in the area.Different visualization approaches realize fast streaming of visual data over the Internet and dynamic rendering of scenes in respond to viewer's interaction.The integration of the route panorama with the GIS provides a visual index for discovery and retrieval of the information related to cities and geographic spaces.The applications of the route panorama are applied to city navigation,scene archiving,virtual tour,modeling and simulation,georeferencing,etc.