MATLAB: How to transform to grayscale image

digital image processinggrayscale imageimage processingmatrix

I want to transform to grayscale image but I should not by the matlab commands I must use only matrix operations.How can I do? e.g=(262×262 x3 uint8 image).
note:ı can use basic commands sometimes if they requires.

Best Answer

I = imread(image) ;
R = I(:,:,1) ; 
G = I(:,:,2) ; 
B = I(:,:,3) ; 
I = 1/3*(R+G+B) ;
I = uint8(I) ;
imshow(I)
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