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In this paper, we present the loss less data hiding algorithm based on the concept of quad tree decomposition. With the slight changes of original images, by altering the shape of histogram, or by modifying the difference value between two consecutive pixels, loss less data hiding can be achieved at the encoder. Correspondingly, at the receiver, both the original image and the embedded data should...
Reversible data hiding has attracted more and more attention in both researches and applications. It can be categorized into two branches, one is histogram-based scheme, and the other is performed by adjusting the difference between adjacent pixel pairs. We consider the advantages of both methods and integrate them altogether, and propose the histogram-based difference expansion scheme for reversible...
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