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Applications of digital rights management (DRM) have been developed for some years. Among them, watermarking or data hiding techniques work along with encryption algorithms to protect the copyright of multimedia contents. Nowadays, people tend to capture images with smart phones, and then they can transmit the image online instantly. Therefore, DRM relating issues have practical applications, and...
Reversible data hiding has become an important research topic in recent years due to the characteristics of 'reversibility'. At the encoder, we embed the secret information into original image, and deliver the marked image to the decoder. At the decoder, with the aid of side information, both the secret information and original image should be separated from marked image to keep the reversibility...
Reversible data hiding has attracted more and more attention in recent years. With reversible data hiding, it requires embedding secret data into original image with devised algorithm at the encoder, and marked image can then be delivered to the decoder. At the decoder, both the secret data and original image should be perfectly separated from marked image to keep the reversibility. There are several...
In this paper, we propose a new algorithm in reversible data hiding, with the characteristics of ease of implementation, based on the alteration of difference values relating to original image. Three major categories can make reversible data hiding possible, one is to modify the histogram of original images, the second is to alter the difference between neighboring pixels, and the third is to apply...
Reversible data hiding is a newly developed topic in watermarking researches. At the encoder, it relies on slightly modifying the characteristics of original images for embedding secret information. At the decoder, original image and secret information can be separated from marked image with slight amount of overhead. In this paper, we propose the scheme by predicting the difference between output...
Reversible data hiding is one of the popular topics in watermarking researches, and it belongs to the branch of digital rights management (DRM) applications. Similar to conventional watermarking techniques, for reversible data hiding, at the encoder, secret information can be embedded into original images, and the marked image can be obtained. Different from conventional watermarking, due to the term...
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