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This paper is a two staged multi-layer reversible data hiding scheme based on Lagrange interpolation. Lagrange interpolation will cross applied on odd and even pixels to produce predicted images, and then histogram shifting modification will be applied to embed confidential data into the differences between predicted and original images. The experimental results show the quality of Lena image from...
The scheme we propose combines the advantages of the scheme from Wu et al., and the techniques of reversibility, to increase the embedding capacity, while maintaining the same visual quality. Inspired from the reversibility of Ni et al.'s scheme which can completely extract hidden information and restore to the original images, a code cascading shift approach is designed in a reversible way to embed/extract...
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