摘要
为了对彩色QR码进行版权保护以及安全性验证,分别对数字图像混沌加密技术和数字水印技术进行了研究。提出了一种改进的图像混沌加密算法,并以此作为数字水印算法的预处理步骤,随后基于离散小波变换和矩阵的奇异值分解技术,设计了一种彩色QR码数字水印算法。实验验证了该算法的可行性,结果显示该算法对于JPEG压缩、噪声攻击和裁剪攻击具有良好的抵抗性。
In order to carry on copyright protection and security verification of color QR code,the digital image chaos encryption technology and digital watermarking technology were respectively researched.Firstly,an improved image chaos encryption algorithm was proposed as a preprocessing step of digital watermarking algorithm.Then a color QR code digital watermarking algorithm was designed based on discrete wavelet transform and matrix singular value decomposition.Finally,the feasibility of the algorithm was verified by experiments.The results show that the proposed method has good resistance to JPEG compression,noise attack and cropping attack.
作者
印曦
黄伟庆
YIN Xi;HUANG Weiqing(Institute of Information Engineering,Chinese Academy of Sciences,Beijing 100093,China;School of Computer and Control Engineering,University of Chinese Academy of Sciences,Beijing 100040,China)
出处
《通信学报》
EI
CSCD
北大核心
2018年第7期50-58,共9页
Journal on Communications
基金
国家重点研发计划基金资助项目(No.2016YFB0801001
No.2016YFB0801004)~~
关键词
信息安全
数字水印
混沌加密
彩色QR码
information security
digital watermarking
chaotic encryption
color QR code
