MATLAB: How to read and pre-process the multiple images and write in specific location

help to solve error

function preprocessing_multiple
srcFiles = dir('C:\Users\LENOVO\Desktop\Genuine\1\*.png');  % the folder in which ur images exists
for i = 1 : length(srcFiles)
    filename = strcat('C:\Users\LENOVO\Desktop\Genuine\1\',srcFiles(i).name);
    I = rgb2gray(imread(filename));
    imshow(I)
    I2=medfilt2(I);
    figure,imshow(I2)
imwrite(I2,fullfile('C:\Users\LENOVO\Desktop\','*.png'));
end
I got error in above code:
Error using imwrite (line 454)
Unable to open file "C:\Users\LENOVO\Desktop\*.png" for writing. You may not
have write permission.
Error in preprocessing_multiple (line 11)
imwrite(I2,fullfile('C:\Users\LENOVO\Desktop\','*.png'));

Best Answer

Regina - in your line of code
imwrite(I2,fullfile('C:\Users\LENOVO\Desktop\','*.png'));
which file are you trying to write to? You are not specifying a file name and are instead using the wildcard character. Try changing the above line of code so that you explicitly set the filename to which you want to write the I2 data to.
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