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    文件类型: .rar
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    发布日期: 2021-06-10
  • 语言: 其他
  • 标签: 图像去噪  

资源简介

平移不变小波去噪程序演示 以平移不变小波为平台 所用是作者自己改进的bayesShrik算法

资源截图

代码片段和文件信息

function  after_denoise=NewBayesShrink(x_graybase_funNthresholdalphaT1T2)
%用的是垂直方向的
%DD44 4
%db4 2 都产生了很好的结果
x_gray = im2double(x_gray); %进行平移小波处理
x_gray_pingyi=pingyi(x_gray1);
c=fn_SW(x_graybase_funN);%把噪音图像小波分解
nc=fn_SW(x_gray_pingyibase_funN);%把原始图像小波分解?????????
newc=BayesShrink_Original(cNthresholdalphaT1T2);%调用第i种方法的BayesShrink
new_c=BayesShrink_Original(ncNthresholdalphaT1T2);
after_denoise=fn_SW(newcbase_fun-N);%重建 
after_denoise_pingyi=fn_SW(new_cbase_fun-N);
after_denoise_pingyi=pingyi(after_denoise_pingyi-1);
after_denoise=(after_denoise+after_denoise_pingyi)/2;


function newc=BayesShrink_Original(clevelthreshold_funalphaT1T2)%各个只计算HH子带
                    [n m]=size(c);
  if n~=m  error(‘picture must be square‘);
      return ;
  end;
       
             deta = Calc_Deta(c);            
             deta_estimate = deta *256;
             for l=1:level
                 t1=n/2^l;
                 t2=n/2^(l-1);
                %upright
                threshold = Calc_Threshold(cdeta(1)l1);
                for i=1:t1
                 for j=t1+1:t2
                     c(ij)=Return_Threshold_Function_Value(threshold_funthresholdc(ij)alphaT1T2);
                 end
                end
                %downleft 
                threshold = Calc_Threshold(cdeta(2)l2);
                for i=t1+1:t2
                     for j=1:t1
                     c(ij)=Return_Threshold_Function_Value(threshold_funthresholdc(ij)alphaT1T2);
                     end
                end
                %downright 
                threshold = Calc_Threshold(cdeta(3)l3);
                 for i=t1+1:t2
                     for j=t1+1:t2
                     c(ij)=Return_Threshold_Function_Value(threshold_funthresholdc(ij)alphaT1T2);
                     end
                end
             end
             newc=c;


function deta = Calc_Deta(c)
deta=zeros(13);

[n m]=size(c);
t=n/2;%第一层
temp=c(1:1:tt+1:1:n);    %H
%temp=c(t+1:1:n1:1:t);%v
%temp=c(t+1:1:nt+1:1:n);  %d

temp=reshape(temp1size(temp1)*size(temp2));
%%%用第一级的所有高频子代
% temp1=c(t+1:1:nt+1:1:n);temp1=reshape(temp11size(temp11)*size(temp12));
% temp2=c(t+1:1:nt+1:1:n);temp2=reshape(temp21size(temp21)*size(temp22));
% temp=[temp1 temp2];
med = median(abs(temp));
deta(1)=med/0.6745;

%temp=c(1:1:tt+1:1:n);    %H
temp=c(t+1:1:n1:1:t);%v
%temp=c(t+1:1:nt+1:1:n);  %d

temp=reshape(temp1size(temp1)*size(temp2));
%%%用第一级的所有高频子代
% temp1=c(t+1:1:nt+1:1:n);temp1=reshape(temp11size(temp11)*size(temp12));
% temp2=c(t+1:1:nt+1:1:n);temp2=reshape(temp21size(temp21)*size(temp22));
% temp=[temp1 temp2];
med = median(abs(temp));
deta(2)=med/0.6745;


%temp=c(1:1:tt+1:1:n);    %H
%temp=c(t+1:1:n1:1:t);%v
temp=c(t+1:1:nt+1:1:n);  %d
temp=reshape(temp1size(temp1)*size(temp2));
%%%用第一级的所有高频子代
% temp1=c(t+1:1:nt+1:1:n);temp1=reshape(tem

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件     118728  2011-01-21 17:14  小波去噪GUI程序包\afm256.png

     文件       3884  2011-02-24 09:51  小波去噪GUI程序包\BayesShrink.m

     文件      12697  2011-01-17 14:14  小波去噪GUI程序包\fn_SW.m

     文件      66614  2011-02-21 23:40  小波去噪GUI程序包\lena256_noise10.bmp

     文件      66614  2011-02-22 01:11  小波去噪GUI程序包\lena256_noise20.bmp

     文件      66614  2011-02-22 01:29  小波去噪GUI程序包\lena256_noise30.bmp

     文件      66614  2011-02-22 01:40  小波去噪GUI程序包\lena256_noise35.bmp

     文件       3851  2011-02-24 09:50  小波去噪GUI程序包\NewBayesShrink.m

     文件        433  2011-02-20 09:35  小波去噪GUI程序包\pingyi.m

     文件       1241  2011-02-24 09:10  小波去噪GUI程序包\Return_Threshold_Function_Value.asv

     文件       1228  2011-02-24 09:50  小波去噪GUI程序包\Return_Threshold_Function_Value.m

     文件       2630  2011-02-24 10:44  小波去噪GUI程序包\VisulShrink.m

     文件      10565  2011-02-24 12:38  小波去噪GUI程序包\WaveletDenoiseTool.asv

     文件       5913  2011-02-24 10:49  小波去噪GUI程序包\WaveletDenoiseTool.fig

     文件      10563  2011-02-24 12:39  小波去噪GUI程序包\WaveletDenoiseTool.m

     目录          0  2011-02-24 21:11  小波去噪GUI程序包

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