How to evaluate PSNR values of multiple images by single loop according to the images sequence in directory/folder?

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Haseeb Hassan 2019-6-30

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https://ww2.mathworks.cn/matlabcentral/answers/469550-how-to-evaluate-psnr-values-of-multiple-images-by-single-loop-according-to-the-images-sequence-in-di

评论： DIPTI MISHRA 2020-6-9

I have refrence images in seprate folder, and output images in another directory. Now i want to calculate the PSNR values by single loop, the code is given below

Directory = 'input\images'; 
Directory2 = 'results\images'; 
% Read images from Images folder
Imgs = dir(Directory);
Imgs2=dir(Directory2);
for j=1:length(Imgs)
    
    thisname = Imgs(j).name;
    thisname2 = Imgs2(j).name;
    thisfile = fullfile(Directory, thisname);
    thisfile2 = fullfile(Directory2, thisname2);
    try
      Img = imread(thisfile);  % try to read image
      Img2 = imread(thisfile2);
%       %Im = Img(:,:,1);
%      % Im2 = Img2(:,:,1);
%     figure, imshow(thisfile);
%       title(thisname);
%     figure, imshow(thisfile2);
%       title(thisname2);
%      % title(thisname2);
%      
[peaksnr, snr] = psnr(Img2, Img);
  
fprintf('\n The Peak-SNR value is %0.4f', peaksnr);
   catch
   end
end

my code is running smoothly and calculate me the PSNR values in single loop, but it doest give me the PSNR values in proper ordere. We mean it give us the PSNR values in shuffle order.