can anyone demo me how to do a tamper localization?
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Image Analyst
on 28 Nov 2013
What if you simply subtract the image known to be legitimate from the one suspected of being tampered with? (Be sure to cast both to double before subtracting.)
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Youssef Khmou
on 28 Nov 2013
hi, That is new field to me, let us try to apply what @Image Analyst described as an example :
X=im2double(imread('circuit.tif'));
T=X;T(200:210,150:170)=T(200:210,150:170)+1.2*randn(size(T(200:210,150:170)));
D=abs(T-X);
subplot(1,3,1), imshow(X), title(' original');
subplot(1,3,2), imshow(T), title(' tampered');
subplot(1,3,3), imshow(D), title(' localization')
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