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In this paper, we propose a reversible data hiding scheme that enables an adjustable amount of information to be embedded in JPEG images based on padding strategy. The proposed embedding algorithm only modifies, in a subtle manner, an adjustable number of zero-valued quantised DCT coefficients to embed the message. Hence, compared with a state-of-the-art based on histogram shifting, the proposed scheme...
In this paper, we propose two algorithms which hide visual patterns into two halftone images such that one can see the hidden pattern directly from the overlaid image of the two generated halftone images. For the first algorithm, the experimental result shows that the generated halftone images have reasonable image quality and good visual quality of the hidden pattern from the overlaid image. To enhance...
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