期刊
JOURNAL OF VISUAL COMMUNICATION AND IMAGE REPRESENTATION
卷 46, 期 -, 页码 33-47出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jvcir.2017.03.009
关键词
Blind image watermarking; Discrete cosine transform; Partly sign-altered; Mixed modulation; Crisscross inter-block prediction
资金
- Ministry of Science and Technology, Taiwan, ROC [MOST 105-2221-E-562-003, MOST 104-2221-E-197-023]
Watermarking has been proposed as a solution to the problem protecting copyrighted multimedia in networked environments. This paper presents a simple but effective blind watermarking scheme capable of satisfying requirements pertaining to imperceptibility as well as robustness, while maintaining a sufficient payload capacity. In the proposed scheme, partly sign-altered mean modulation and mixed modulation are introduced to the crisscross discrete cosine transform (DCT)-based inter-block. Substituting a set of coefficients for a single coefficient enhances robustness against malign attacks. The inclusion of mixed modulation enables control over the parameters required to provide resistance against commonly encountered attacks while maintaining a high peak signal-to-noise ratio. Experiment results demonstrate that the proposed algorithm exceeds the performance of the seven other schemes in providing robust resistance to variety of attacks, particularly those associated with Gaussian noise and speckle noise. (C) 2017 Elsevier Inc. All rights reserved.
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