图像Non-local means 去噪算法matlab实现

最新推荐文章于 2025-04-23 15:08:07 发布

沙丁鱼鱼鱼

最新推荐文章于 2025-04-23 15:08:07 发布

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分类专栏：机器学习文章标签： non-local-means 图像去噪

本文链接：https://blog.youkuaiyun.com/u014694994/article/details/94973874

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本文详细介绍了如何使用Matlab实现Non-local means算法进行图像去噪。通过对比分析，展示了该算法在去除图像噪声方面的能力，并提供了具体的代码实现步骤。

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function [output]=NLmeansfilter(input,t,f,h)
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %
 %  input: image to be filtered
 %  t: radio of search window 5        5*5大小的搜索窗
 %  f: radio of similarity window 2 
 %  h: degree of filtering 10
 %
 %  Author: Jose Vicente Manjon Herrera & Antoni Buades
 %  Date: 09-03-2006
 %
 %  Implementation of the Non local filter proposed for A. Buades, B. Coll and J.M. Morel in
 %  "A non-local algorithm for image denoising"
 %
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

 % Size of the image
 [m n]=size(input);

 % Memory for the output
 Output=zeros(m,n);

 % Replicate the boundaries of the input image
 input2 = padarray(input,[f f],'symmetric');
 
 % Used kernel
 kernel = make_kernel(f);
 kernel = kernel / sum(sum(kernel));
 
 h=h*h;
 
 for i=1:m
 for j=1:n
                 
         i1 = i+ f;
         j1 = j+