Files in different folders

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Jenna
Jenna 2013-5-31
If you have 12 different folders (that each contain pictures), is there a way to create a loop that will sum up the first images in all the folders, and the sum of the second images in all the folders, etc... for all the images?

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回答（3 个）

Sean de Wolski
Sean de Wolski 2013-5-31
编辑：Sean de Wolski 2013-5-31
Azzi Abdelmalek
Azzi Abdelmalek 2013-5-31
folders={f1,f2,f3}; % your folders
for k=1:numel(folders)
f=dir([folders{k} '/*.jpg']);
files{k}={f.name};
end
for ii=1:numel(files{1});
im{ii}=0;
for jj=1:numel(files)
im{ii}=im{ii}+imread(files{jj}{ii});
end
end
Image Analyst
Image Analyst 2013-5-31
You can take the FAQ: http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F and adapt it to use genpath() to get all subfolders.
  2 个评论
Jenna
Jenna 2013-6-1
My problem is that I want to read in the files using imread, which will create a matrix with data about the pixels. I also want to read in data for 135 pictures. How do I create a scenario where I will have an array of 135 x 1, where each row will actually be its own matrix of data on pixels?
Image Analyst
Image Analyst 2013-6-2
If they're grayscale:
oneRow = grayImage(theRowNumber, :);
If they're color
oneRowRed = rgbImage(theRowNumber, :, 1);
oneRowGreen = rgbImage(theRowNumber, :, 2);
oneRowBlue = rgbImage(theRowNumber, :, 3);

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