Batch processing images from 2 folders and saving them to another folder
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Hello, I have two folders, Folder A and Folder B with unit8 binary images of same corresponding file names.
The folder structure is as follows:
Folder A
Image 1.bmp
Image 2.bmp
Image 3.bmp
...
Folder B
Image 1.bmp
Image 2.bmp
Image 3.bmp
...
I want to perform a simple operation imsubtract between the same filenames in the two folders. For example, (Image 1 from Folder A) - (Image 1 from Folder B). Similary (Image 2 from Folder A) - (Image 2 from Folder B), and so on. I want to batch process these, and save it to a different folder (e.g. Folder C). How would I go about doing this?
I have 400 images in Folder A and 400 images in Folder B with the same corresponding filenames. I want to batch export calculated 400 files (in for e.g. Folder C). Any help is very appreciated.
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Image Analyst
2022-2-12
编辑:Image Analyst
2022-2-12
Do you want floating point differences? Positive and negative values allowed? Or do you want the absolute difference of the subtraction, like you'd get with imabsdiff(). I'll show the later
foldera = 'C:/imagesa';
folderb = 'C:/imagesb';
folderc = 'C:/imagesc';
if ~isfolder(folderc)
mkdir(folderc);
end
fileListA = dir(fullfile(foldera, '*.bmp'))
fileListB = dir(fullfile(folderb, '*.bmp'))
for k = 1 : length(fileListB)
% Build file names.
fileNameA = fullfile(foldera, fileListA(k).name);
fileNameB = fullfile(folderb, fileListB(k).name);
% Read them in.
imageA = imread(fileNameA);
imageB = imread(fileNameB);
% Compute difference
diffImage = imabsdiff(imageA, imageB);
imshow(diffImage, []);
drawnow;
% Write out result to result folder: same base file name, different folder.
fileNameC = fullfile(folderc, fileListA(k).name);
imwrite(diffImage, fileNameC);
end
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