Results 121 to 130 of about 420 (176)

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

Sci Rep
Niharika R, Ponnambalam M, Ponnambalam M, Ghazalah SA, Awadelkarim AM, Hong D.   +5 more
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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.
Dinu Coltuc, Ioan-Catalin Dragoi
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

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, Hui-Min Ko, Der-Long Cheng, Tsung-Heng Chen, Ying-Ying Chen, Yuan-Chun Lee   +5 more
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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, Michiel van der Veen, Fons Bruekers   +2 more
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Reversible image watermarking

Proceedings 2003 International Conference on Image Processing (Cat. No.03CH37429), 2004
In this paper we present a reversible watermarking technique for digital images. In our context, reversibility refers to the ability to restore the original image by the watermark detector. The technique is based on a transformation function that introduces 'gaps' in the image histogram. The 'gaps' are used to encode the watermark.
Arno J. van Leest, Michiel van der Veen, Fons Bruekers   +2 more
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Simple reversible watermarking schemes

SPIE Proceedings, 2005
This paper proposes a low computational reversible watermarking approach. An integer transform is defined for pairs of pixels. The transform is invertible and, besides, for some pairs of pixels, the original values are recovered even if the LSBs of the transformed pixels are overwritten.
Dinu Coltuc, Alain Trémeau
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A New Approach to Reversible Watermarking

2014 Tenth International Conference on Intelligent Information Hiding and Multimedia Signal Processing, 2014
A general digital watermarking application could not prevent the distortion of some sensitive content, like medical or military images. Since such changing of medical images is not acceptable, a reversible watermarking technique must be used to completely restore the original image after the watermark information has been extracted.
Toshiki Ito, Ryo Sugimura, Hyunho Kang, Keiichi Iwamura, Kitahiro Kaneda, Isao Echizen   +5 more
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Reverse concatenated watermark codes

2012 IEEE International Conference on Communications (ICC), 2012
In this paper, we introduce an error correction coding scheme, known as reverse concatenated watermark codes for substitution, insertion and deletion channel. This code is obtained by concatenating a distribution transformer with an LDPC code.
Rathnakumar Radhakrishnan, Kui Cai
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Horizontal pairwise reversible watermarking

2015 23rd European Signal Processing Conference (EUSIPCO), 2015
The best results for very low embedding capacity reported so far are provided by a pairwise reversible watermarking scheme that uses paired embedding with rhombus prediction and context smoothness control. Since the horizontal (or vertical) adjacent pixels are more correlated than the diagonal ones, this paper proposes such a pairing for reversible ...
Ioan-Catalin Dragoi, Dinu Coltuc, Ion Caciula   +2 more
openaire   +1 more source