Embedding capacity estimation of reversible watermarking schemes
نویسندگان
چکیده
منابع مشابه
Very High Embedding Capacity Algorithm for Reversible Image Watermarking
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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Permanent distortion is one of the main drawbacks of all the irreversible watermarking schemes. Attempts to recover the original signal after the signal passing the authentication process are being made starting just a few years ago. Some common problems, such as salt-andpepper artefacts due to intensity wraparound and low embedding capacity, can now be resolved. However, we point out in this w...
متن کاملEstimation of the Embedding Capacity in Pixel-pair based Watermarking Schemes
Estimation of the Embedding capacity is an important problem specifically in reversible multi-pass watermarking and is required for analysis before any image can be watermarked. In this paper, we propose an efficient method for estimating the embedding capacity of a given cover image under multi-pass embedding, without actually embedding the watermark. We demonstrate this for a class of reversi...
متن کاملForward Modified Histogram Shifting based Reversible Watermarking with Reduced Pixel Shifting and High Embedding Capacity
The modified histogram shifting method proposed by Hong et. al.(2010) is best method of reversible watermarking[16]. The shifting of pixels are more in Hong et. al.(2010) method. Even Hong et. al.(2010) method of modified histogram shifting has less embedding capacity and do not provide enough quality for general purpose image. Our forward modified histogram shifting method overcomes all these ...
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Having dealt with the first two important criteria for data embedding in medical images namely, robustness towards attacks and imperceptibility to human visual system, the third and final most important criterion is optimizing the data hiding capacity parameter. This is especially a very important criterion since it deals with medical data management. Embedding of data over digital images can c...
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ژورنال
عنوان ژورنال: Sadhana
سال: 2014
ISSN: 0256-2499,0973-7677
DOI: 10.1007/s12046-014-0288-8