This paper presents a reference sharing mechanism-based self-embedding watermarking scheme. The host image is embedded\nwith watermark bits including the reference data for content recovery and the authentication data for tampering location. The\nspecial encoding matrix derived from the generator matrix of selected systematic Maximum Distance Separable (MDS) code is\nadopted. The reference data is generated by encoding all the representative data of the original image blocks. On the receiver side,\nthe tampered image blocks can be located by the authentication data. The reference data embedded in one image block can be\nshared by all the image blocks to restore the tampered content.The tampering coincidence problem can be avoided at the extreme.\nThe maximal tampering rate is deduced theoretically. Experimental results show that, as long as the tampering rate is less than the\nmaximal tampering rate, the content recovery is deterministic.Thequality of recovered content does not decrease with the maximal\ntampering rate.
Loading....