Image Tampering Location and Restoration Watermarking Based on Blockchain Technology
With the development of multimedia technology and network communication, digital watermarking technology has become one of the research hotspots in the field of signal processing and information security in recent years. In this paper, an effective fragile block watermarking method for image tampering localization is proposed. Compared with the existing algorithms, it has better localization effect. With the idea of blockchain, the algorithm first forms a linear cyclic chain from all blocks in the image on the basis of the key, which is called blockchain. Then the watermarking of the image block is hidden in the subsequent blocks, which ensures the content of the image block and the security of the embedded watermarking. Theoretical analysis and experimental results show that this method can resist VQ and collage attacks well, and has high positioning accuracy.
KeywordsImage watermarking Blockchain technology Image restoration
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