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Reversible image watermarking on prediction errors by efficient histogram modification
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DOI：10.1016/j.sigpro.2012.05.034.png)
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A reversible data hiding algorithm is proposed, in which the efficiency of modifying a pair of histogram bins is considered. Multiple pairs of histogram bins can be further selected for data embedding in sequence, while pre-process of pixel values is performed to prevent the possible overflow and underflow. Embedding with the prediction errors is investigated with a new prediction scheme. In each of the four prediction modes, a large amount of prediction errors can be produced from the host image. Moreover, all combinations of the four modes to generate a number of histogram pairs are enumerated to obtain the best performance. Blind extraction and recovery are enabled by embedding a pre-computed location map and other overhead information into the watermarked image. Promising experimental results are obtained on a variety of test images. Compared with the existing algorithms, the image content is better preserved in high payload data hiding. (C) 2012 Elsevier B.V. All rights reserved.
Keyword:
Reversible data hiding
Prediction
Histogram modification
Efficiency
期刊
IF:
3.6
论文数:
9.9K
被引数:
1.7W
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引用论文
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