Quantum watermarking based on threshold segmentation using quantum informational entropy  

作　　者：Jia Luo Ri-Gui Zhou Wen-Wen Hu YaoChong Li Gao-Feng Luo 罗佳;周日贵;胡文文;李尧翀;罗高峰(College of Information Engineering,Shanghai Maritime University,Shanghai 201306,China;Research Center of Intelligent Information Processing and Quantum Intelligent Computing,Shanghai 201306,China;College of Information Engineering,Shaoyang University,Shaoyang 422000,China)

机构地区：[1]College of Information Engineering,Shanghai Maritime University,Shanghai 201306,China [2]Research Center of Intelligent Information Processing and Quantum Intelligent Computing,Shanghai 201306,China [3]College of Information Engineering,Shaoyang University,Shaoyang 422000,China

出　　处：《Chinese Physics B》2022年第4期116-122,共7页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.6217070290);the Shanghai Science and Technology Project(Grant Nos.21JC1402800 and 20040501500);the Scientific Research Fund of Hunan Provincial Education Department(Grant No.21A0470);the Hunan Provincial Natural Science Foundation of China(Grant No.2020JJ4557);Top-Notch Innovative Talent Program for Postgraduate Students of Shanghai Maritime University(Grant No.2021YBR009)。

摘　　要：We propose a new quantum watermarking scheme based on threshold selection using informational entropy of quantum image.The core idea of this scheme is to embed information into object and background of cover image in different ways.First,a threshold method adopting the quantum informational entropy is employed to determine a threshold value.The threshold value can then be further used for segmenting the cover image to a binary image,which is an authentication key for embedding and extraction information.By a careful analysis of the quantum circuits of the scheme,that is,translating into the basic gate sequences which show the low complexity of the scheme.One of the simulation-based experimental results is entropy difference which measures the similarity of two images by calculating the difference in quantum image informational entropy between watermarked image and cover image.Furthermore,the analyses of peak signal-to-noise ratio,histogram and capacity of the scheme are also provided.

关 键 词：quantum image watermarking threshold segmentation quantum informational entropy quantum circuit 

分 类 号：O413[理学—理论物理] TP309.7[理学—物理]