Abstract
Quantum watermarking is the technique which embeds the invisible quantum signal such as the owner’s identification into quantum multimedia data (such as audio, video and image) for copyright protection. In this paper, a watermark strategy for quantum images is proposed based on flexible representation for quantum images (FRQI). Compared with the former strategy, which can only be used to verify the identity of the true owner of a carrier image, the proposed method can be used to find out who is the real owner, and our strategy’s capacity reaches the largest. It is impossible for anyone except the copyrighter to clear off or extract the watermark images.
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Acknowledgements
This work is supported by NSFC (Grant Nos. 61170270, 61100203, 60903152, 61003286, 61121061), NCET (Grant No. NCET-10-0260), SRFDP (Grant Nos. 200800131016, 20090005110010), Beijing Natural Science Foundation (Grant No. 4112040), the Fundamental Research Funds for the Central Universities (Grant Nos. BUPT2011YB01, BUPT2011RC0505, 2011PTB-00-29, 2011RCZJ15), Science and Technology on Communication Security Laboratory Foundation (Grant No. 9140C110101110C1104).
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Zhang, WW., Gao, F., Liu, B. et al. A Quantum Watermark Protocol. Int J Theor Phys 52, 504–513 (2013). https://doi.org/10.1007/s10773-012-1354-9
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DOI: https://doi.org/10.1007/s10773-012-1354-9