中文说明：它是2003年出版的著名去噪方法BLS-GSM的源代码。该方法考虑了变换域的内相关性，得到了一个较好的模型来描述与相邻系数的关系。
English Description：
It is a source code of the famous denoising method, namely BLS-GSM, published in 2003. The method considers the intradependency in transform domain and obtain a better model to describe the relationship with neighboring coefficients. The algorithm is written in the language of matlab, and there is demon file to run the code.