非局部均值滤波的主要代码,运用到数字图像处理的降噪，希望有用。-Non-local mean filtering code, the use of digital image processing, noise reduction, and I hope useful.

NLM非局部均值的降噪C代码，已经优化过了，速度明显提高，学要的可以下载一下-NLM non-local mean noise reduction C code, has been optimized, the speed was significantly improved, the study can be downloaded

利用MATLAB实现了图像的非局部均值去噪算法，效果明显。(The non local means denoising algorithm of image is implemented by MATLAB, and the effect is obvious.)

非局部均值（NL-means）是近年来提出的一项新型的去噪技术。该方法充分利用了图像中的冗余信息，在去噪的同时能最大程度地保持图像的细节特征。基本思想是：当前像素的估计值由图像中与它具有相似邻域结构的像素加权平均得到。(NL-means is a new denoise method. It utilized image's information, preserving detail while denoise.)