摘要
随着数字城市研究的不断深入,海量多分辨率影像的存储和网络发布已经成为GIS当前研究的热点,构建金字塔模型已经广泛应用于管理栅格数据。本文通过层块索引裁切方法,有效地减少了数据的存储单元,极大地提高了海量影像的浏览速度,并在国家测绘局成就展"寻找家园"系统中得到了很好的体现。
With the development of the digital urban studies, the storage of massive multi-resolution images and the network release have become a hot in current GIS. Construction of the pyramid model has been widely applied in the management of raster data. Through subsetting images based on the hierarchical and block index, this article effectively reduced the data storage unit, and enormously enhanced the browsing speed of massive images, which obtained a very good expression in NewMap China system.
出处
《测绘科学》
CSCD
北大核心
2009年第1期180-181,共2页
Science of Surveying and Mapping
关键词
影像
金字塔
层块索引
image
pyramid
hierarchical and block index
