Reference Sharing Mechanism for Watermark Self-Embedding
Reference Sharing Mechanism for Watermark Self-Embedding
复制标题
水印自嵌入参考共享机制
DOI：
10.1109/tip.2010.2066981
复制
发表时间：
2011-02-01
影响因子：
10.6
通讯作者：
Feng, Guorui
中科院分区：
文献类型：
--
作者：
Zhang, Xinpeng;Wang, Shuozhong;Feng, Guorui
提出了两种基于参考共享机制的自嵌入水印方案，其中水印是从不同区域的原始主内容中提取的参考，并由这些区域共享以进行内容恢复。在识别出被篡改的块之后，参考数据和保留区域中的原始内容都被用于恢复被篡改区域中的主要内容。第一种方案可以在内容替换不太大的情况下，恢复出原始图像的五个最高有效位层的原始数据，并恢复出原始水印图像。在第二种方案中，主机内容被分解为三个层次，并采用不同的恢复能力的参考共享方法来保护不同层次的数据。因此，篡改率越低，恢复的内容数据的级别越多，并且恢复结果的质量越好。
This paper proposes two novel self-embedding watermarking schemes based upon a reference sharing mechanism, in which the watermark to be embedded is a reference derived from the original principal content in different regions and shared by these regions for content restoration. After identifying tampered blocks, both the reference data and the original content in the reserved area are used to recover the principal content in the tampered area. By using the first scheme, the original data in five most significant bit layers of a cover image can be recovered and the original watermarked image can also be retrieved when the content replacement is not too extensive. In the second scheme, the host content is decomposed into three levels, and the reference sharing methods with different restoration capabilities are employed to protect the data at different levels. Therefore, the lower the tampering rate, the more levels of content data are recovered, and the better the quality of restored results.