Geoeye-1全色与多光谱影像融合方法  

A Novel Method for Merging Geoeye-1 Panchromatic and Multispectral Images

作　　者：杨智翔[1] 徐佳[1] 何秀凤[1] 

机构地区：[1]河海大学测绘科学与工程系,南京210098

出　　处：《光电工程》2011年第5期120-126,共7页Opto-Electronic Engineering

基　　金：国家自然科学基金(50579013);江苏科技支撑计划(BE2010316);江苏高校研究生创新计划(CX08B_110Z)

摘　　要：针对传统的像素级融合方法对高分辨力影像融合存在较大光谱扭曲的问题,在分析了Geoeye-1传感器光谱响应特性的基础上,提出了一种适合Geoeye-1全色与多光谱影像融合的高保真方法。本文所提的方法的改进之处主要体现在两个方面:低空间分辨力全色影像的构建方式和空间细节信息注入系数的选取。利用澳大利亚霍巴特地区的Geoeye-1全色和多光谱影像进行了试验研究,从主观评价和定量分析综合评价了新方法与传统的影像融合方法的融合效果,结果表明新方法在光谱信息损失最少的情况下,较大地提高了影像的空间分辨力,与其他方法相比具有更好的综合性能。For most of the traditional pixel-level image fusion methods, the spectral distortion is a common problem in high resolution satellite image fusion. A novel spectral preservation fusion method for Geoeye-1 panchromatic and multispectral image fusion is proposed based on the sensor spectral response. The proposed method has improvement in two parts： the construction of low resolution panchromatic image and the modulation coefficients of spatial detail information. To evaluate the performance and efficiency of the proposed method, some traditional image fusion methods were also used to fuse Geoeye-1 images; and the fusion results of each method were evaluated by qualitative and quantitative comparison and analysis. The results show that the proposed method is better than other methods. It can greatly enhance the spatial detail information and minimize color distortion.

关 键 词：Geoeye-1 全色影像 多光谱影像 光谱响应 影像融合 

分 类 号：TP391[自动化与计算机技术—计算机应用技术] TP751[自动化与计算机技术—计算机科学与技术]