中文说明：稀疏分解，是自己做论文修改的，可以运行，注释齐全。稀疏表示是图像处理的重点，并且K—SVD优于字典表示方法
English Description：
Sparse decomposition, is their own paper to modify, can run, complete notes. Sparse representation is the focus of image processing, and K-SVD is better than dictionary representation