中文说明： 比较经典的稀疏表示算法，该代码中主要包含了KSVD算法和OMP贪婪追踪算法，可以用来做图像压缩、图像稀疏表示、图像消除噪音，代码比较全面，稀疏表示算法是这十年来在国内外关于图像处理领域研究热点，在计算机视觉方 面也起了非常大的作用，因此非常值得我们研究。
English Description：
The code mainly includes ksvd algorithm and OMP greedy pursuit algorithm, which can be used for image compression, image sparse representation and image noise elimination. The code is relatively comprehensive. Sparse representation algorithm is a research hotspot in the field of image processing at home and abroad in the past decade, especially in the field of computer vision