随着遥感影像数据量变得越来越大, 为了提高图像实时缩放和显示的速度, 快速地获取不同分辨率下的图像信息, 往往会对原始图像建立金字塔结构, 根据不同的显示要求, 调用不同金字塔等级中的数据, 来达到快速显示、漫游的目的。-With the amount of remote sensing data become more and more, in order to improve image scaling and display real-time speed, quick access to different resolutions of the image information, may often create the original image pyramid structure, depending on display requirements, call the different pyramid level data, to achieve rapid display, roaming purposes.