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Acknowledgments
This work is supported by the National Natural Science Foundation of China (Grant No. 61003290); Beijing Natural Science Foundation (Grant No. 4122008); Funding Project for Academic Human Resources Development in Institutions of Higher Learning Under the Jurisdiction of Beijing Municipality (No. CIT&TCD201304039); National Cipher Development Fund during the 12th Five-Year Plan Period (No. MMJJ201401006).
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Yang, YG., Wang, Y. & Zhao, QQ. Letter to the Editor regarding “Dynamic watermarking scheme for quantum images based on Hadamard transform” by Song et al.. Multimedia Systems 22, 271–272 (2016). https://doi.org/10.1007/s00530-014-0417-6
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DOI: https://doi.org/10.1007/s00530-014-0417-6