陕北黄土丘陵沟壑区ALOS遥感影像融合方法研究

【目的】通过几种遥感影像融合方法的比较,筛选适合于陕北黄土丘陵沟壑区遥感影像处理的融合方法。【方法】利用ALOS全色波段与多光谱影像,通过主成分变换、乘法变换和Brovey变换等3种融合方法,对陕北黄土丘陵沟壑区遥感影像进行融合,并对融合后的影像进行效果评价。【结果】所有融合处理图像的标准差和信息熵多大于原始影像,融合后图像的信息量大大增加,其中Brovey变换法在提高目视效果和识别精度方面优于其他2种融合方法。【结论】3种变换融合方法中,Brovey变换更适合于陕北黄土丘陵沟壑区ALOS遥感影像的融合,同时也为提高该区遥感影像的解译精度奠定了基础。

Fusion method of the Loess Hilly Region of Northern Shaanxi Province based on ALOS image

[Objective] The study was done to screen out the fusion method which is suitable for the Loess Hilly Region of Northern Shaanxi Province from contrasted the fusion methods.[Method] Based on ALOS panchromatic and multispectral images,three fusion methods,PCA,Multiplicative and Brovey were used to estimate the effect of the fusion images of the loess hilly region of Northern Shaanxi Province.[Result] Most of the standard deviation and entropy of the fusion images were higher than those of original images,the ...