对吐哈盆地相邻两幅遥感图像的辐射匹配

在ERDAS软件的支持下,对吐哈盆地相邻的两幅ETM遥感图像采用所介绍的直方图加减均值差和方差均值2种方法进行辐射匹配,并得出基于这2种方法的几点结论用于提高辐射匹配程度。同时为了降低匹配时存在的人为误差,提出了一种新的多样本均值的辐射匹配方法。最后通过对3种匹配方法的结果进行定量性检验,证明多样本均值的辐射匹配方法能达到较好的匹配效果,其匹配结果要优于前2种方法,具有可行性。笔者的目的在于:经过对不同方法的运用、对比及验证,提出了一种更为优越的辐射匹配方法———多样本均值法,以用于对吐哈盆地整体的辐射匹配。较好的匹配效果有助于对盆地内一些相关指数的准确评价和其砂岩型铀矿的分析研究。

Radiometric Matching Methods to the Adjacent Remote Sensing Images of Turpan-Hami Basin

Supported by the ERDAS 8.4 software, this paper just gives an example of two ETM adjacent images of Turpan-Hami Basin which exist different radiation to expound how to adjust the radiation between images by histogram matching and mean-variance methods. It draws the conclusions to enhance level of matching. At the same time, in order to reduce the error caused by human the paper presents a new feasible radiometric matching method which is the basis of multisample-mean. At last, by checking the results of three methods, it testified that the multisample-mean method is better.The aim of the paper is to advance a better method multisample-mean by contrasting to use in radiometric matching of Turpan-Hami Basin. The results are good at study.