0001 0002 fc = 45; 0003 0004 clc; 0005 echo off; 0006 0007 if (isempty(who('Id'))) 0008 disp('To run this script there should be an image named Id in the workspace.'); 0009 disp('Id should contain the degraded image.'); 0010 disp('apply_degradation.m can be used to simulate several degradations'); 0011 disp('For instace:'); 0012 disp(' load barbara256'); 0013 disp(' [Id,PSF]=apply_degradetion(Im,''blur_gn'',0.3,400);'); 0014 return; 0015 end 0016 0017 Val_min = 0.001; 0018 0019 lim_frec = [0 3]; 0020 0021 vari = 400; 0022 0023 [W,PSF,H,noise,Blurred]=degrade2(rand(256),fc,Val_min,lim_frec,vari); 0024 0025 Nlambdas = 1; 0026 lambdas = 4; 0027 0028 disp(['Restoring image using L2 (' num2str(Nlambdas) ' values of lambda)']); 0029 0030 imrl2=restore(Id,'L2',PSF,lambdas); 0031 0032 figure; 0033 imshow(imrl2/255); 0034 title('Restored (L2)'); 0035 0036 disp('Press any key...'); 0037 pause; 0038 0039 disp(['Restoring image using CSF (' num2str(Nlambdas) ' values of lambda)']); 0040 0041 imrcsf=restore(Id,'CSF',PSF,lambdas); 0042 0043 figure; 0044 imshow(imrcsf/255); 0045 title('Restored (CSF)'); 0046 0047 disp('Press any key...'); 0048 pause; 0049 0050 disp(['Restoring image using AR4 (' num2str(Nlambdas) ' values of lambda)']); 0051 0052 imrar4=restore(Id,'AR4',PSF,lambdas); 0053 0054 figure; 0055 imshow(imrar4/255); 0056 title('Restored (AR4)'); 0057 0058 disp('Press any key...'); 0059 pause; 0060 0061 disp(['Restoring image using AR8 (' num2str(Nlambdas) ' values of lambda)']); 0062 0063 imrar8=restore(Id,'AR8',PSF,lambdas); 0064 0065 figure; 0066 imshow(imrar8/255); 0067 title('Restored (AR8)'); 0068 0069 disp('Press any key...'); 0070 pause; 0071 0072 disp(['Restoring image using AR12 (' num2str(Nlambdas) ' values of lambda)']); 0073 0074 imrar12=restore(Id,'AR12',PSF,lambdas); 0075 0076 figure; 0077 imshow(imrar12/255); 0078 title('Restored (AR12)'); 0079 0080 disp('Press any key...'); 0081 pause; 0082 0083 disp(['Restoring image using PERCEPTUAL (' num2str(Nlambdas) ' values of lambda)']); 0084 0085 imrper=restore(Id,'PER',PSF,lambdas); 0086 0087 figure; 0088 imshow(imrper/255); 0089 title('Restored (PERCEPTUAL)'); 0090 0091