基于GDAL的遥感影像快速浏览平台的构建
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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.
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
[1]朱建章,石强,陈凤娥,等.遥感大数据研究现状与发展趋势[J].中国图象图形学报,2016,21(11):1 425-1 439.
[2]李德仁,童庆禧,李荣兴,等.高分辨率对地观测的若干前沿科学问题[J].中国科学:地球科学,2012,42(6):805-813.
[3]Marco Quartulli,Igor G.Olaizola.A review of EO image information mining[J].ISPRS Journal of Photogrammetry and Remote Sensing,2013,75(1):11-28.
[4]徐超,韩龙,陈银珠.遥感影像快速浏览技术的实现[J].电子技术与软件工程,2015(16):117-118.
[5]郭春波,王茂芝,汪大明,等.基于内存映射的ENVI标准格式影像指定块数据快速读取[J].四川理工学院学报:自科版,2012,25(5):58-61.
[6]章孝灿,黄智才,陈刚,等.海量遥感图象快速显示技术[J].中国图象图形学报,2002,7(10):1 021-1 026.
[7]宋江洪,赵忠明.图像分块分层结构在海量数据处理中的应用[J].计算机工程与应用,2004,40(33):31-33.
[8]赵岩,王思远,毕海芸,等.基于GDAL的遥感图像浏览关键技术研究[J].计算机工程,2012,38(23):15-18.
[9]艾梦池,程效军.数字影像重采样方法实现及对比分析[J].辽宁工程技术大学学报,2015(12):1 382-1 387.
[10]田杰,吕建新,周晓娟,等.位图的图像处理技术[J].现代电子技术,2001(9):28-31.
[11]Gonzalez R,Woods R,冈萨雷斯,et al.Digital image processing[M].New Jersey:Addison-Wesley,2010.
[2]李德仁,童庆禧,李荣兴,等.高分辨率对地观测的若干前沿科学问题[J].中国科学:地球科学,2012,42(6):805-813.
[3]Marco Quartulli,Igor G.Olaizola.A review of EO image information mining[J].ISPRS Journal of Photogrammetry and Remote Sensing,2013,75(1):11-28.
[4]徐超,韩龙,陈银珠.遥感影像快速浏览技术的实现[J].电子技术与软件工程,2015(16):117-118.
[5]郭春波,王茂芝,汪大明,等.基于内存映射的ENVI标准格式影像指定块数据快速读取[J].四川理工学院学报:自科版,2012,25(5):58-61.
[6]章孝灿,黄智才,陈刚,等.海量遥感图象快速显示技术[J].中国图象图形学报,2002,7(10):1 021-1 026.
[7]宋江洪,赵忠明.图像分块分层结构在海量数据处理中的应用[J].计算机工程与应用,2004,40(33):31-33.
[8]赵岩,王思远,毕海芸,等.基于GDAL的遥感图像浏览关键技术研究[J].计算机工程,2012,38(23):15-18.
[9]艾梦池,程效军.数字影像重采样方法实现及对比分析[J].辽宁工程技术大学学报,2015(12):1 382-1 387.
[10]田杰,吕建新,周晓娟,等.位图的图像处理技术[J].现代电子技术,2001(9):28-31.
[11]Gonzalez R,Woods R,冈萨雷斯,et al.Digital image processing[M].New Jersey:Addison-Wesley,2010.