MATLAB: How can I convert many images from m x n x 3 to m x n by rgb2gray

Image Processing Toolboxrgb2gray

I want to convert 50 .jped images in a folder alltogether

Best Answer

img = dir('*.jpeg') ; 
N = length(img) ; 
for i = 1:N
    thisimg = img(i).name ; 
    I = imread(thisimg) ; 
    Ig = rgb2gray(I) ; 
    [dir,name,ext] = fileparts(thisimg) ; 
    filename = [name,'_gray','.jpeg'] ;
    imwrite(Ig,filename) ; 
end
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