Given a grayscale image X2
And its (under)quantised version with 3 bits depth X3
What information does the
abs(X2_normalized - X3_normalized) carry?
As an example the following image X5 generated with the code below
X2norm= X2-min(X2(:)); X2norm = X2norm / max(X2norm(:)); X3norm= X3-min(X3(:)); X3norm = X3norm / max(X3norm(:)); X5 = abs(X2norm - X3norm); image5=figure;imagesc(X5);title('image 5'); saveas(image5,'image5.jpg');