MATLAB: Imwrite() problem with saving sequence images

digital image processingMATLAB

First, i try to load .mat file into my workspace files = dir('*.mat'); for i = 1:numel(files) load(files(i).name);
Second, i want to read the images in work space and save it as following for k=0:10 output_folder = 'C:\Users\Tossaworn\Desktop'; outputFileName = fullfile(output_folder, ['test' num2str(k) '.tif']);
imwrite(IR0000__,outputFileName); end
IR0000__ is 1 image, but i want IR0001__,IR0002__, …and output test0,1,2,… . Now output can run, but i have no idea to read the input images. please suggest, Thank you.

Best Answer

Here is how I would do it:
 output_folder = 'C:\Users\Tossaworn\Desktop';
 files = dir('*.mat'); 
 for fidx = 1:numel(files)
    matcontent = load(files(fidx).name);  %load into structure
    filenumber = regexp(files(fidx).name, '\d+', 'match', 'once');  %get numeric part of filename
    imagename = sprintf('IR%s__', filenumber);   %build variable name
    assert(isfield(matcontent, imagename), 'mat file %s does not contain image %s', files(fidx).name, imagename);
    outputfilename = fullfile(output_folder, sprintf('test%s.tif', filenumber));
    imwrite(matcontent.(imagename), outputfilename);
  end
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