一种采用了区域生长方法进行图像分割，分割效果比较理想，但是算法比较简单，可以推荐进行简单算法融合时候使用。-A the region growing method is applied to image segmentation, the segmentation effect is ideal, but the algorithm is simpler, can be recommended to use simple algorithm fusion.

nsst域内基于区域能量和区域方差取最大值的图像融合算法，简单易懂。主程序高频区域能量取大，低频加权平均，读者可自行修改。-nsst maximum value within an image fusion algorithm based on regional energy and regional variance, easy to understand. Main high-frequency energy to take large area, low-weighted average,