摘要
针对目前遥感影像数据量急剧增加导致其读取和浏览效率低下的问题,本文构建了一个基于GDAL的遥感影像快速读取平台。本文首先分析现有的影像快速读取方法,然后利用GDAL库建立影像金字塔实现影像的快速读取,利用影像分块读取技术实现影像的快速浏览,并加入了影像缩放、直方图均衡化、距离量测和图像选点等基本功能。多组影像测试证明,本平台可以快速读取、浏览大数据量影像。
Aiming at the problem that the data quantity of image increased sharply,which leading to the low efficiency of reading and browsing,this paper proposed a remote sensing image fast reading platform based on GDAL library. Firstly,the existing methods of reading image quickly were analyzed. Then the GDAL library was used to establish the image pyramid for reading image quickly,and the technology of reading image into block was used to browse image quickly. Finally,some basic functions were added such as image scaling,histogram equalization,distance measurement and point selection. Experiments have been conducted on multi-group images showing the efficiency of the read and browse functions in this platform.
引文
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