How to select images from nested folder?
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I have a folder named AAA. Inside folder AAA there is another folder name A, inside A there is another folder B. folder B consist of 300 images. I want to get every 10th number image from folder B ( It will be 30 images) and place these images in another folder C. I need a Matlab code for this Scenario. Any help?
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Joel Handy
2019-7-16
编辑:Joel Handy
2019-7-16
Something like this should work. You will possibly need to add code to appropriately sort your list of images. I've marked where you would do it.
imageFolder = uigetdir('', 'Select Image Folder');
destinationFolder = uigetdir(imageFolder, 'Select Destination Folder');
contents = dir(imageFolder);
fileList = contents(~[contents.isdir]);
% Sort list as needed here
filesToMove = fileList(1:10:end);
fromPaths = fullfile(imageFolder,{filesToMove.name});
toPaths = fullfile(destinationFolder,{filesToMove.name});
for fileIdx = 1:numel(fromPaths)
copyfile(fromPaths{fileIdx}, toPaths{fileIdx})
end
Also I'm note sure the specific relevance of folders AAA and A. If AAA, A, and B are all known folders and you want to create C based on them, you could replace the uigetdir code with something like
imageFolder = fullfile(AAA,A,B);
destinationFolder = fullfile(AAA,A,C);
if ~exist(destinationFolder, 'dir')
mkdir(festinationFolder);
end
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Joel Handy
2019-7-18
I'm having a little trouble following this. There is a lot of extra code. For example:
jj=sprintf('%d',j);
name=alphas(i);
name1 = char(name);
mkdir(jj, name1);
could just be
% Make a folder '1' inside user folder
mkdir(num2str(j),alphas{i});
Another problem I think you're having is that your inputs to mkdir appear to be backwords. The format mkdir is mkdir(parent directory, new folder) so mkdir('C:\MyExistingFolder', 'NewFolder') would create 'C:\MyExistingFolder\NewFolder';
You could also just do mkdir(['C:\MyExistingFolder' filesep 'NewFolder']) or mkdir(fullfile('C:\MyExistingFolder', 'NewFolder').
Why are you using imread and imwrite instead of copyfile to move the image files? Are you actually doing some processing on these images in your real application?
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Image Analyst
2019-7-18
Have you looked at imageDatastore()? Or dir() using two asterisks as the file pattern?
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