Abstract: A push service system for location based tourism information was proposed by the combination of linear quad-tree, wireless network, Geographic Information System (GIS) and cross media techniques. GIS data was used as the spatial index in the interactive tourism information platform and guide subsystem. Other data such as text, image, audio and video were also used to model the scene at the same time. All types of those data were organized and managed through a cross-media model, thus the semantic relations among them were fully mined. This system obtains tourism information easily and pushes it in time, and is far more practical than other guide systems.

Key words: GIS, linear quadtree, cross media data, guide system, Geographic Information System (GIS)

摘要： 结合线性四叉树、无线互联网、地理信息系统(GIS)和跨媒体技术,实现了一个具有高真实感、较强交互能力的旅游信息主动推送服务系统。该系统以GIS矢量数据为空间索引,互动式旅游知识共享平台和导游手段为表现内容,且加载文字、图像和音视频等数据,并对这些海量信息进行跨媒体数据统一建模,以实现不同类型数据的组织和管理。与现有的电子导游系统相比,该系统具有数据采集高效且低成本、信息时效性高和表现手段真实感强等优势。

关键词: GIS, 线性四叉树, 跨媒体数据, 导游系统, 地理信息系统