Joint SVD and QR codes for image authentication

Image authentication is an important technology to protect image content integrity. This paper proposes an image authentication method, which regards the stable singular values as significant authentication data and represents them in the form of QR codes. With the help of QR codes, the authentication data will be complete and correct even though the codes were slightly dirty or damaged. Experimental results showed that the proposed scheme is able to extract the correct authentication data out of QR codes under some attacks and to localize the tampered areas. Moreover, qualities of the authenticated image and the recovered image are superior to the previous method.