How can I divide a image of 1500*1500 into different blocks of 32*32 and save all the images in a folder with different subfolders in it.
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I have a folder in which i have sub folders of different image groups. Each image is 1500*1500, How can I divide it into different blocks of 32*32 and save all the images in that folder with different subfolders in it.
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Walter Roberson
2017-11-29
1500 = 46*32 + 28 -- that is, you would have partial blocks of 28 at the end. What do you want to do with those blocks?
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Walter Roberson
2017-11-29
%divide into blocks
temp = cell2mat(YourImage, [32 * ones(1, 46), 28], [32 * ones(1, 46), 28]);
separate_blocks = temp(1:end-1, 1:end-1);
%create output folder, making sure we do not overwrite any existing folder
while true
foldername = tempdir('.');
if ~exist(foldername, 'dir'); break; end
end
mkdir(foldername);
%write the images
for K = 1 : numel(separate_blocks)
filename = fullfile(foldername, sprintf('%04d.bmp', K));
imwrite(filename, separate_blocks{K});
end
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