Abstract
In this paper, a novel watermarking scheme for quantum images based on Hadamard transform is proposed. In the new scheme, a unitary transform controlled by a classical binary key is implemented on quantum image. Then, we utilize a dynamic vector, instead of a fixed parameter as in other previous schemes, to control the embedding process. The dynamic embedding vector is decided by both the carrier quantum image and the watermark image, which is only known by the authorized owner. The proposed scheme is analyzed from visual quality, computational complexity, and payload capacity. Analysis and results show that the proposed scheme has better visual quality under a higher embedding capacity and lower complexity compared with other schemes proposed recently.
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Acknowledgments
This work is supported by the National Natural Science Foundation of China (61301099, 61100187, 11201100), Heilongjiang Province Educational Department Funds of China (12521107), Heilongjiang Province Science and Technology Agency Funds of China (A201213), and the Youth Foundation at the Harbin University of Science and Technology (2011YF009).
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Communicated by T. Plagemann.
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Song, X., Wang, S., A. Abd El-Latif, A. et al. Dynamic watermarking scheme for quantum images based on Hadamard transform. Multimedia Systems 20, 379–388 (2014). https://doi.org/10.1007/s00530-014-0355-3
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DOI: https://doi.org/10.1007/s00530-014-0355-3