Constraints of progressive transmission of spatial data on the web
Constraints of progressive transmission of spatial data on the web
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DOI：
10.1007/s11806-010-0219-8
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发表时间：
2010-01
影响因子：
6
通讯作者：
T. Ai
中科院分区：
文献类型：
--
作者：
T. Ai
地图数据在万维网上的渐进传输为用户提供了一种自适应的远程数据访问策略。它不仅加快了网络传输速度，而且为信息获取提供了一个有效的导航指南。这种传输的关键技术是空间数据的有效多重表示和服务器端的预组织。本文针对渐进式传输，从服务器端的数据组织、传输过程中的数据控制和到达客户端后的数据恢复三个方面研究了渐进式传输的一些约束条件。两种策略，即在线地图综合和离线地图综合，分别研究了这种渐进传输。
The progressive transmission of map data on the World Wide Web provides the user with a self-adaptive strategy to access remote data. It not only speeds up the web transfer but also offers an efficient navigation guide for information acquisition. The key technology in this transmission is the efficient multiple representation of spatial data and pre-organization on the server site. This paper aims at progressive transmission investigating some constraints from three aspects: data organization on server site, data control in the transmission process and data restore after reaching the client. Two strategies, namely on-line map generalization and off-line map generalization, are examined respectively for this kind of progressive transmission.