基于ComGIS海量影像的存储与快速显示

Mass Image Data Storage and Quick Display Based on ComGIS

在地理信息系统中,矢量地图数据更新速度慢、现势性不强。而随着航空航天技术的发展遥感影像的采集更加方便、更新速度快,影像的数据量在不断地增大。如何利用现有的计算机硬件资源对海量影像数据进行高效存储和快速显示?为此,在借助ArcGIS中的组件之一,即ArcSDE(空间数据引擎)的基础上提出了利用数据分块、建立影像金字塔来提高海量影像的显示速度。

The data of vector map update so slowly that they could not keep up with the development of situation in the geographic information system （GIS）. While with the development of aviation and spaceflight technique, the collection of remote sense image becomes more convenient and updates more rapidly. How to utilize the existing resource of computer hardware to store effectively and display rapidly mass image data is an important problem to be solved. It was put forward to establish the image pyramid by data block to advance the displaying speed for mass image based on one of ArcGIS component,ArcSDE（the engine of space data）