Non-integer expansion embedding techniques for reversible image watermarking
نویسندگان
چکیده
منابع مشابه
Non-integer expansion embedding techniques for reversible image watermarking
This work aims at reducing the embedding distortion of prediction-error expansion (PE)-based reversible watermarking. In the classical PE embedding method proposed by Thodi and Rodriguez, the predicted value is rounded to integer number for integer prediction-error expansion (IPE) embedding. The rounding operation makes a constraint on a predictor’s performance. In this paper, we propose a non-...
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This paper aims at reducing the embedding distortion by improving predictor’s performance for prediction-error expansion (PE) based reversible watermarking. In the existing PE embedding methods, the predicted values or their variety should be rounded to integer values. This will restrict predictor’s performance since the prediction context is only with past pixels (image) or samples (audio). In...
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This paper proposes a high capacity reversible image watermarking scheme based on enhancement of difference expansion method. Reversible watermarking enables the embedding of useful information in a host signal without any loss of host information. We propose an enhancement of Difference Expansion technique whereby we can embed recursively into multiple layer of payload for grey scale and also ...
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Reversible image watermarking enables the embedding of copyright or useful information in a host image without any loss of information. Here a novel technique to improve the embedding capacity i.e. reversible watermarking using an adaptive prediction error expansion & pixel selection is proposed. This work is an improvement in conventional Prediction Error Expansion by adding two new techniques...
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ژورنال
عنوان ژورنال: EURASIP Journal on Advances in Signal Processing
سال: 2015
ISSN: 1687-6180
DOI: 10.1186/s13634-015-0232-z