一种多光谱与高分辨率全色图像融合新算法

提出了一种新的基于小波变换的多光谱与高分辨率图像融合方法.该方法通过强度因子有效地将高分辨率图像经小波分解的低频分量信息融合到多光谱图像经小波分解的低频分量中去,使得经过小波反变换的融合图像较大程度地保留了多光谱图像的光谱信息和高分辨率图像的空间分辨率.给出了该方法的融合结果,并与小波变换法(WT方法)进行了比较,证明了该图像融合方法的正确和有效性.

A NEW ALGORITHM FOR THE FUSION OF MULTI-SPECTRAL AND HIGH-RESOLUTION PANCHROMATIC IMAGES

A new technique is developed based on wavelet transform for the fusion of a high- resolution panchromatic image and a low-resolution, multi-spectral image . The high-resolution panchromatic image approximation can be first merged into the multi-spectral image approximation by edge intensity factor, and then the merged image is reconstructed by means of an inverse wavelet transform using the fused approximation and the details from the high-resolution panchromatic image. The proposed technique is compared with old wavelet merging technique (the WT method). The results of the comparison show the proposed merger performing better in combining and preserving spectral-spatial information for the test images.