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In this paper, a novel block-wise fragile image watermarking algorithm for tampering localization and recovery is proposed. The image is divided into Region of Interest (ROI) and Region of Non Interest (RONI). Considering the ROI-based self-embedding problem as a special erasure channel, fountain code is applied in our method to deal with the reference symbols loss. And to minimize quality degradation...
In this paper we propose a new method for content reconstruction using self-embedding technology. As the content reconstruction problem can be regarded as a special kind of erasure channel, we use fountain code which has good performance in erasure channel to generate reference symbols for reconstruction. Theoretical analysis of success bound about maximal tamper rate is given and is verified by the...
A robust copyright protection scheme for digital images is proposed in the paper. In the proposed scheme, the watermark does not require to be embedded into the protected image but is used to generate a secret image by addition operations over finite groups. Then the secret image is registered to certified authority (CA) for further protection. Color images can be used as the watermark is the most...
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