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How to conver folder (images) from GRB to Gary and save them in Output folder with the same original names?

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Goma Najah
Goma Najah 2016-8-7
回答： Image Analyst 2016-8-7
i have this code which convert image to Gray and save it in current folder.
directory = dir('AM01AFS.jpg');
for i = 1 : size(directory,1)
filename = directory(i).name;
img = rgb2gray(imread(filename));
imwrite(img, ['Gr_' filename]);
end
I need to convert folder (images) from GRB to Gary and save them in Output folder with the same original names? Any help Plz.

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Image Analyst
Image Analyst 2016-8-7
You need to use fullfile() to make a name with the output folder prefixing the base file name:
outputFileName = fullfile(outputFolder, filename);
imwrite(img, outputFileName);
See the FAQ: http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F

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