中文说明：应用背景该代码是采用平稳小波变换进行多聚焦图像融合，从而获得一副清晰的图像，采用matlab编写，可以直接运行，带有一副示例图像，实验效果好。关键技术首先是SWT，SWT级平稳小波变换，是一种多尺度、多方向、时频局部的图像稀疏表示方法，广泛运行图像处理领域，而且还具有平移不变性，非常适合图像融合。对原图像进行SWT变换，获得低频子带和高频子带，然后针对不同频带，采用不同的融合规则进行融合。
English Description：
Application backgroundThe code is using stationary wavelet transform for multi focus image fusion, to obtain a clear image, prepared using MATLAB, can be directly run, with a pair of example images, experimental results.Key TechnologyFirst of all, SWT, SWT level stationary wavelet transform is a multi-scale, multi direction, frequency of local image sparse representation method, widely used in the field of image processing, but also has translation invariance, is very suitable for image fusion. SWT transform of the original image, the low frequency sub band and high frequency sub band, and then for different frequency bands, using different fusion rules to fuse.