Results 161 to 170 of about 1,345 (218)

LSTM-driven chaotic keystream generator for robust medical image encryption. [PDF]

open access: yesSci Rep
Niharika R   +5 more
europepmc   +1 more source

Adaptive Pairing Reversible Watermarking

IEEE Transactions on Image Processing, 2016
This letter revisits the pairwise reversible watermarking scheme of Ou et al., 2013. An adaptive pixel pairing that considers only pixels with similar prediction errors is introduced. This adaptive approach provides an increased number of pixel pairs where both pixels are embedded and decreases the number of shifted pixels.
Ioan-Catalin Dragoi, Dinu Coltuc
exaly   +3 more sources

Low distortion transform for reversible watermarking

IEEE Transactions on Image Processing, 2012
This paper proposes a low-distortion transform for prediction-error expansion reversible watermarking. The transform is derived by taking a simple linear predictor and by embedding the expanded prediction error not only into the current pixel but also into its prediction context.
Dinu Coltuc
exaly   +3 more sources

Adaptive reversible image watermarking scheme

open access: yesJournal of Systems and Software, 2011
This paper presents an adaptive block sized reversible image watermarking scheme. A reversible watermarking approach recovers the original image from a watermarked image after extracting the embedded watermarks. Without loss of generality, the proposed scheme segments an image of size 2^Nx2^N adaptively to blocks of size 2^Lx2^L, where L starts from a ...
Chien-Chang Chen, Yao-Hong Tsai
openaire   +2 more sources

Reversible watermarking of 2D-vector data

open access: yesProceedings of the 2004 workshop on Multimedia and security, 2004
This paper presents a reversible watermarking scheme for the 2D-vector data (point coordinates) which are popularly used in geographical information related applications. This reversible watermarking scheme exploits the high correlation among points in the same polygon in a map and achieves the reversibility of the whole scheme by an 8-point integer ...
Michael Voigt   +2 more
openaire   +2 more sources

Reversible Watermarking with Subliminal Channel

open access: yes, 2008
With some difficulty in making more redundant capacity, only a symmetrically encrypted hash code is embedded in some reversible watermarking schemes, which makes it possible that a dishonest verifier fabricates legal contents. This paper shows that for reversible watermarking, by exploiting a subliminal channel, only a capacity of several more bytes ...
Xianfeng Zhao, Ning Li
openaire   +2 more sources

Reversible and Robust Watermarking Technique

2021 IEEE International Conference on Consumer Electronics-Taiwan (ICCE-TW), 2021
We propose a reversible and robust watermarking technique based on the prediction-error embedding of color images. Then, lossless or lossy watermark extraction is used. In the lossless algorithm, we use the parameters of the predicted model and the location map to improve the quality of the stego image and restore the cover image.
I-Hui Pan   +5 more
openaire   +1 more source

Reversible watermarking for images

SPIE Proceedings, 2004
Reversible watermarking is a technique for embedding data in a digital host signal in such a manner that the original host signal can be restored in a bit-exact manner in the restoration process. In this paper, we present a general framework for reversible watermarking in multi-media signals.
Arno J. van Leest   +2 more
openaire   +1 more source

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