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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...
Reversible data hiding has emerged in recent years, and it has the fundamental requirement of reversibility. For reversible data hiding, secret information is embedded into original image with devised algorithms, and the marked image should be delivered to the decoder without any damage. For decoding, both the embedded secret and original image should be recovered perfectly. With these characteristics,...
Lossless data hiding belongs to one major branch in information security researches. The major goal is to retain the lossless property of proposed algorithm, meaning that original image and embedded secret should be perfectly recovered at decoder. Based on the multi-round prediction of differences between original and marked images, enhanced amount of capacity can be obtained while retaining the acceptable...
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...
A novel data hiding scheme in the word document files are to be proposed. There are two basic concepts in our approach. First of all, let the spaces of each line, which the number of spaces is more than one of cover files embeds secret messages. In the past, the data hiding schemes on document files usually used a pair or block of inter-word spaces to embed secret messages. Comparatively, our scheme...
In this paper, we propose a fragile watermarking scheme for binary images with reversibility. Our scheme not only can extract the embedded watermark to authenticate the integrity of host image but also can recover the host image from the watermarked image. Furthermore, the scheme adopts adjustable block size and thresholds to control image quality and embedding capacity. Moreover, the cipher block...
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