基于小波变换的遥感图像融合算法  

A remote-sensing image fusion based on wavelet transform

作　　者：郭敏如[1] 刘慧[1] 

机构地区：[1]北京化工大学理学院,北京100029

出　　处：《北京化工大学学报（自然科学版）》2007年第S2期126-128,共3页Journal of Beijing University of Chemical Technology(Natural Science Edition)

摘　　要：提出了一种基于小波变换的遥感图像融合的新方法。给出了梯度滤波器的矩阵形式,改进了Petrovic提出的灰度图像融合方法,并将其应用于ETM图像融合。和两幅原图像及灰度融合图像相比,新方法是有效的,不仅较大地增强了图像的空间细节表现能力,而且很好地保留了多光谱影像的光谱信息。A new remote sensing image fusion method based on wavelet transform has been devised for the construction of fusion multi-spectral images.The method utilizes the gradient filter given in matrix form and an improvement of the fusion algorithm proposed by Petrovic,and was applied to the fusion of Landsat Enhanced Thematic Mapper(ETM) images.The resulting images are superior to the original ETM images and gray fusion images.The method not only affords significant enhancement of spatial detail information,but also preserves the spectral information of the original multi-spectral image well.

关 键 词：小波变换 梯度滤波器 图像融合 

分 类 号：TP751[自动化与计算机技术—检测技术与自动化装置]