基于QT、GDAL处理遥感影像GeoTIFF数据的应用

Application Of Remote Sensing Image-GeoTiff Based on QT and GDAL

GeoTIFF图像格式可以存储各种地理信息,因此在遥感图像领域应用十分广泛。但随着遥感影像的数据量迅速增长,如何提高对海量影像数据调度及显示成为急需解决的问题。本文利用开源库GDAL实现了对海量遥感影像GeoTIFF格式文件的地理信息读取,通过建立图形金字塔的方式对影像数据进行快速索引,最后利用跨平台QT语言开发,实现GeoTIFF格式文件在各种不同操作系统下放大、缩小及全屏显示。

GeoTIFF image format contains lots of geographic information, and therefore is widely used in the field of remote sensing im- ages. But with the rapid growth of remote sensing image data, it is the urgent problem how to improve efficiency of massive image data access and display. In this paper, Using open source libraries （GDAL） to read the data of GeoTIFF Format Remote Sensing Image file, and create a graphical pyramid image data, Finally, programmed with cross - platform QT development tools, read and display GeoTIFF format file on different operating systems.