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Analysis and improvement of the watermark strategy for quantum images based on quantum Fourier transform

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Abstract

We investigate the quantum watermark strategy for quantum images based on quantum Fourier transform proposed by Zhang et al.(Quantum Inf Process 12(2):793–803, 2013). It is aimed to embed the watermark image into the Fourier coefficients of the quantum carrier image without affecting the carrier image’s visual effect. However, in our opinion the protocol is not clearly described and several steps are ambiguous. Moreover, we argue that the watermarking algorithm claimed by the authors is incorrect. At last, a possible improvement strategy is presented.

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References

  1. Zhang, W.-W., Gao, F., Liu, B., Wen, Q.-Y., Chen, H.: A watermark strategy for quantum images based on quantum fourier transform. Quantum Inf. Process. 12(2), 793–803 (2013)

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  2. Zhang, W.-W., Gao, F., Liu, B., Jia, H.Y., Wen, Q.-Y., Chen, H.: A Quantum watermark protocol. Int. J. Theor. Phys. 52(2), 504–513 (2013)

    Article  MathSciNet  MATH  Google Scholar 

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Acknowledgments

This work is supported by the National Natural Science Foundation of China (Grant Nos. 61170270, 61003290); The Specialized Research Fund for the Doctoral Program of Higher Education (Grant Nos. 20091103120014, 20090005110010); Beijing Natural Science Foundation (Grant Nos. 4122008, 1102004); Funding Project for Academic Human Resources Development in Institutions of Higher Learning Under the Jurisdiction of Beijing Municipality (No. CIT&TCD201304039).

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Authors and Affiliations

  1. College of Computer Science and Technology, Beijing University of Technology, Beijing, 100124, China

    Yu-Guang Yang, Xin Jia, Peng Xu & Ju Tian

  2. State Key Laboratory of Integrated Services Network, Xidian University, Xi’an, 710071, China

    Yu-Guang Yang

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  1. Yu-Guang Yang
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  2. Xin Jia
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  3. Peng Xu
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  4. Ju Tian
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Correspondence to Yu-Guang Yang.

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Yang, YG., Jia, X., Xu, P. et al. Analysis and improvement of the watermark strategy for quantum images based on quantum Fourier transform. Quantum Inf Process 12, 2765–2769 (2013). https://doi.org/10.1007/s11128-013-0561-5

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  • DOI: https://doi.org/10.1007/s11128-013-0561-5

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