How to resize multiple folder images and save it in MATLAB?

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Faheem Ur Rehman 2021-7-12

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评论： Walter Roberson 2021-7-13

I have three folder and each folder contain 10 images. I want to resize each images to 28x28 and then save 28x28 images. I want that my code automatically pick folder one by one.

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Answer 1

Catalytic 2021-7-12

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编辑：Catalytic 2021-7-12

在 MATLAB Online 中打开

Yes, that should be easy, but you haven't told us what part of it you're having difficulty with. If I had to guess, you are struggling to automatically get a list of folders to loop over. One way is,

s=dir;
idx=~startsWith({s.name},'.') & [s.isdir];
folders={s(idx).name}

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Faheem Ur Rehman 2021-7-13

i did't get your code where you use imresize command

Walter Roberson 2021-7-13

在 MATLAB Online 中打开

nfolders = length(folders);
for J = 1 : nfolders
   thisfolder = folders(J).name;
   fileinfo = dir(thisfolder);
   fileinfo([fileinfo.isdir]) = [];   %remove . .. and other folders
   nfiles = length(fileinfo);
   for K = 1 : nfiles
       thisfile = fullfile(thisfolder, fileinfo(K).name);
       thisimg = imread(thisfile);
       thisimg28 = imresize(thisimg, 28, 28);
       %you would now want to save thisimg28... but you did not say WHERE
       %you want to save it
   end
end