This paper presents a digital rights protection scheme for every type of document containing images or text using a number of steps that uses cryptography and watermarking. The entities involved in this process are two: the owner of the document that has digital rights on it and a generic user who can download or view the watermarked version of the original document. The watermarked document contains a QRcode that is repeatedly inserted, and scrambled, by the document right's owner, into the frequency components of the image, thus producing the watermarked image. The signed ID uniquely identifies every users using the system. The schema, a non-blind type, achieves good perceptive quality and fair robustness using the 3rd level of the Discrete Wavelet Transform. The experimental results show that, inserting more occurrences of a scrambled QR-code, the proposed algorithm is quite resistant to JPEG compression, rotation, cropping and salt and peeper noise.
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