📄 s4rout2.m
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% Routine 4.2 importing photoimages
X = imread('hootie.jpg');
X = double(X);
Y = (X(:,:,1)+X(:,:,2)+X(:,:,3))/3;
X = Y/3;
X = round(X);
[m,n] = size(X);
image(X)
axis off
colormap gray
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