How to read multiple .png images in a loop using MATLAB

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MD HASIBUR RAHMAN LEMON 2020-10-14

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https://ww2.mathworks.cn/matlabcentral/answers/613866-how-to-read-multiple-png-images-in-a-loop-using-matlab

评论： MD HASIBUR RAHMAN LEMON 2020-10-15

I want to display multiple picture with using for loop. Maximum 200 picture need to display. I'm doing my code like this:

    numberArray = [];
     for i = 1:200
         str = int2str(i);
         str = strcat('\',str,'.png');
         str = strcat('C:\Users\Hasibur Rahman\Documents\MATLAB\ClassWork2_62018040032_哈西\LFPW\trainset', str);
         image = imread(str);
         numberArray = image;
         numberArray = numberArray + image;
         figure,imshow(numberArray);
         title('Original Image!');
         pause(1.5);
     end

The first picture came to the display then nothing else comes. Now what i need to do to solve that problem. Thanks in advance.

Error using imread>get_full_filename (line 567)
File "C:\Users\Hasibur Rahman\Documents\MATLAB\ClassWork2_62018040032_哈西\2.png" does not exist.
Error in imread (line 374)
    fullname = get_full_filename(filename);
Error in Ques3 (line 6)
     im = imread(str);
     
     

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Answer 1

Mathieu NOE 2020-10-14

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在 MATLAB Online 中打开

hi

see below - just change from tif to png extesion and you should be good !

% select appropriate options below ...
% files = dir('*.tif');      % all tif files in current directory
files = dir('handheld*.tif');      % as example : only tiff files with "handheld" in the filename
% main loop
for ck = 1:length(files)
    Filename = files(ck).name;
    H{ck} = imread(Filename);
    
    % plot (t=just to check)
    figure(ck), imagesc(H{ck});
    
    % insert your own code here
    
end