摘要
传统借助于专业软件浏览地理数据的方式,不仅增加了本地磁盘的占用,而且当数据量较大时浏览效率很低。针对地理数据直接浏览不便的问题,提出了基于Spark的影像文件分布式并行切片方案,并利用Leaflet实现了影像瓦片在线高效可视化。实验结果表明,针对地理大文件的浏览效率明显高于目前常用的GIS软件。
The traditional methods of browsing geospatial data with professional software not only increase the occupancy of the local disk, but also make the browsing efficiency low when the amount of data is large. Aiming at the problem of direct browsing of geospatial data, a distributed parallel tiling scheme of image file based on Spark was proposed in this paper. And then, the efficient visualization of tiles on line was realized by using Leaflet. The experimental result shows that the efficiency of browsing large geospatial files is significantly higher than the current GIS software.
出处
《地理空间信息》
2017年第9期63-65,共3页
Geospatial Information
关键词
地理数据
影像瓦片
并行切片
高效可视化
geospatial file
image tile
parallel tiling
efficient visualization
