Abstract
Due to the urgent need for protecting the copyright of digital products in a digital library, this paper proposes a novel public watermarking scheme for a still image. Firstly, the image is decomposed to the multiwavelet domain, in which there are four subblocks in the coarsest resolution level. Then a logo watermark is embedded into the low frequency band by quantizing the difference value between corresponding coefficients in a pair of subblocks in the coarsest resolution level. Experimental results show that the proposed scheme is superior to the conventional quantization based approaches in terms of robustness.
This work is supported by the Nature Science Foundation of Guangdong Province. (020199)
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References
D. Kundur, D. Hatzinakos: Digital Watermarking for Telltale Tamper Proofing and Authentication. Proceedings of the IEEE, Vol 87 (1999) 116–1180.
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© 2002 Springer-Verlag Berlin Heidelberg
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Zhang, J., Xiong, F., Wang, N. (2002). Hiding a Logo Watermark in an Image for Its Copyright Protection. In: Lim, E.P., et al. Digital Libraries: People, Knowledge, and Technology. ICADL 2002. Lecture Notes in Computer Science, vol 2555. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-36227-4_71
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DOI: https://doi.org/10.1007/3-540-36227-4_71
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