%0 Journal Article
%T Spatial index for tile map service based on Z curve<br>基于Z曲线的瓦片地图服务空间索引
%A Nie Yunfeng
%A Zhou Wensheng
%A Shu Jian
%A Xu Hu
%A <br>聂云峰
%A 周文生
%A 舒坚
%A 许虎
%J 中国图象图形学报
%D 2012
%I 
%X Tile spatial index is a key technology to improve the tile fetching efficiency and its performance directly affects the overall performance of geographic information network services. This article analyzes the basic principles of grid index and quad-tree index which are widely used in tile map service.Because Z curve has good locality-preserving behavior and a good reduction of dimensionality behavier,we design a new tile spatial index based on Z-curve, called Z-Index. Experimental results show that the performance of Z-Index is better than grid and quad-tree indexing when applied on massive tile datasets.
%K tile map service
%K spatial index
%K Z curve
%K tile quadtree index
%K grid index<br>瓦片地图服务
%K 空间索引
%K Z曲线
%K 瓦片四叉树索引
%K 格网索引
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=D06194629680C940ACE75262F54B9D85&aid=C3C9E433FF4C68C40448052FA9B880E7&yid=99E9153A83D4CB11&vid=BCA2697F357F2001&iid=0B39A22176CE99FB&sid=11CEECA6DA9E4AC5&eid=8BB50A069C48D50B&journal_id=1006-8961&journal_name=中国图象图形学报&referenced_num=0&reference_num=16