Reversible Watermarking Based on Invariability and Adjustment on Pixel Pairs
Reversible Watermarking Based on Invariability and Adjustment on Pixel Pairs
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DOI：
10.1109/lsp.2008.2001984
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发表时间：
2008-11
影响因子：
3.9
通讯作者：
S. Weng;Yao Zhao;Jeng-Shyang Pan;R. Ni
中科院分区：
文献类型：
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作者：
S. Weng;Yao Zhao;Jeng-Shyang Pan;R. Ni
提出了一种基于像素对和不变性和两两差分调整（PDA）的可逆信息隐藏方案。对于每个像素对，如果某个值被添加到一个像素，同时从另一个像素中减去相同的值，则这两个像素的总和将保持不变。如何正确地选择这个值是平衡可逆性和失真的关键问题。在这封信中，一个像素对之差的一半加上1位水印被精心选择以满足这一目的。此外，PDA提出了显着减少开销信息消耗的容量。通过一系列实验验证了该方法的有效性和优越性。
A novel reversible data hiding scheme based on invariability of the sum of pixel pairs and pairwise difference adjustment (PDA) is presented in this letter. For each pixel pair, if a certain value is added to one pixel while the same value is subtracted from the other, then the sum of these two pixels will remain unchanged. How to properly select this value is the key issue for the balance between reversibility and distortion. In this letter, half the difference of a pixel pair plus 1-bit watermark has been elaborately selected to satisfy this purpose. In addition, PDA is proposed to significantly reduce the capacity consumed by overhead information. A series of experiments is conducted to verify the effectiveness and advantages of the proposed approach.