说明：  基于高斯函数的直方图匹配算法对图像灰度值进行拉伸和均衡处理，达到较好的匹配效果。在传统小波包变换融合算法的基础上，提出了一种基于多通道滤波的小波包变换融合算法，对空间高分辨率图像在小波包分解之前先进行多通道滤波，较好地保留了尺度纹理特征并且采用改进的基于区域特征的自适应融合准则，对高频信息和低频信息采用不同的融合准则，提高了空间分辨率。
(On the basis of traditional wavelet packet transform fusion algorithm, a multi-channel filtering based wavelet packet transform fusion algorithm is proposed. The spatial high-resolution image is filtered by multi-channel filter before the decomposition of the wavelet packet. The scale texture features are well preserved and the improved adaptive fusion criterion based on regional features is adopted. The spatial resolution is improved by using different fusion criteria for high frequency information and low frequency information.)