多光谱与高分辨率图像融合的新算法

提出了一种多光谱与高分辨率图像融合的双树复数小波分维算法.充分利用双树复数小波变换良好的方向选择性,对多光谱的1分量和全色图像进行小波分解,进而在不同子带中进行图像融合,低频采用基于区域能量的融合算法,高频定义不同的分形分维作为权系数进行融合,最后将得到的灰度融合图像进行线性拉伸并替代原来的1分量,得到最终的融合图像.实验结果表明,与经典的IHS变换和小波变换相比,该算法光谱扭曲度仅为前两者的30.31%和50.66%.

New fusion algorithm for multispectral and high-resolution panchromatric images

A Multispectral and High-resolution Panchromatic image fusion algorithm based on the DT-CWT transform and fractal dimension is developed.Firstly,the panchromatic images and the component I of the multi-spectral image are decomposed to the domain of the DT-CWT transform which has the advantage of good directions,and the image fusion is then implemented in different subbands.The region energy fusion algorithm is adopted as fusion rules in low-pass subbands and high-pass subbands,and images are merged with dif...