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- % Add pixel values of a image to brighten/darken it.
- x=imread('lena.bmp');
- [r,c] = size(x);
- brighten = -80;
- for k=1:r,
- for j=1:c,
- x(k,j) = x(k,j) + brighten;
- end
- end
- imshow(x,[0,255]);
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