资源三号卫星正视全色与多光谱影像融合及评价  

The fusion and evaluation of ZY-3 front panchromatic and multi-spectral image

作　　者：吴晓萍[1] 杨武年[1] 李国明[2] 

机构地区：[1]成都理工大学地学空间信息技术国土资源部重点实验室/遥感与GIS研究所,成都610059 [2]四川省第三测绘工程院,成都610500

出　　处：《物探化探计算技术》2014年第1期113-119,共7页Computing Techniques For Geophysical and Geochemical Exploration

基　　金：国家自然科学基金资助项目(41071265;40761018;41372340);高等学校博士学科点专项科研基金课题(20105122110006)

摘　　要：资源三号卫星(ZY-3)是我国发射的首颗民用高分辨率光学传输型立体测绘卫星,其全色波段与多光谱波段有相同的太阳高度角和其他环境条件,影像获取时间一致,因此两种不同分辨率的数据可实现高精度融合形成新的影像。使用Brovey变换、主成分变换、IHS变换、小波变换、GS光谱锐化五种不同的数据融合方法,对ZY-3全色和多光谱影像进行融合,并从清晰度、纹理和色调进行定性分析;从标准差、信息熵、平均梯度、偏差指数、相关系数和光谱扭曲程度进行定量评价。结果表明:基于Gram-Schimdt光谱锐化融合方法产生的遥感图像失真较小,同时很大程度地保持了高分辨率全色波段的空间纹理细节信息,是一种适合于ZY-3图像融合的较好方法。ZY-3satellite is the first civilian optical transmission and three-dimensional mapping satellite with high-resolution.With the same solar elevation angle and other environmental conditions,the two types of different resolutions of panchromatic and multi-spectral images have the same acquisition time,which can achieve high precise fusion to form a new image. Brovey transform,PCA,IHS transform,wavelet transform,GS spectral sharpening were used to fuse panchromatic and multi-spectral images of ZY-3.Qualitative analysis:clarity,texture and tone;Quantitative evaluation:standard deviation,entropy,average gradient,deviation index,correlation coefficients and spectral distortion degree.The results show that the remote sensing image distortion based on Gram-Schmidt spectral sharpening method is smaller,and meanwhile,keeps the high-resolution panchromatic space texture details largely,which is a better resource suitable for ZY-3satellite.

关 键 词：ZY-3 全色波段 多光谱波段 图像融合 定量评价 

分 类 号：TP75[自动化与计算机技术—检测技术与自动化装置]