基于Turbo码的印刷量子点信息隐藏算法研究  

Research on Information Hiding Algorithm for Printing-Quantum-Dots Based on Turbo Codes

作　　者：王育军 曹鹏[1] 王明飞[1] 杨伟纯 胡霄鹏 WANG Yu-jun;CAO Peng;WANG Ming-fei;YANG Wei-chun;HU Xiao-peng(Beijing Key Laboratory of Signal and Information Processing for High-end Printing Equipment,Beijing Institute of Graphic Communication,Beijing 102600,China;Yanbian Changbai Mountains Printing Co.,Ltd,Yanji 133000,China;Changge City Dayang Paper Industry Co.,Ltd,Changge 461599,China)

机构地区：[1]北京印刷学院高端印刷装备信号与信息处理北京市重点实验室,北京102600 [2]延边长白山印务有限公司,延吉133000 [3]长葛市大阳纸业有限公司,长葛461599

出　　处：《数字印刷》2022年第4期195-206,共12页Digital Printing

基　　金：国家自然科学基金面上项目(No.61972042);北京市基金--市教委联合项目(No.KZ202010015023);北京印刷学院校级项目(No.Ef202001)。

摘　　要：网目调网点图像用于信息记录与信息隐藏时,存在因信息污损和误判引起的高误码率问题。本研究提出了基于Turbo码的印刷量子点信息隐藏算法。采用对秘密信息进行DES加密、二维奇偶校验编码和Turbo编码,得到点阵本原图像,然后进行伪随机信息置乱和信息调制,生成印刷量子点图像。印刷量子点信息识读采用分块识读算法,首先采样得到局部印刷量子点图像,然后进行信息解调和解置乱,最后通过Turbo译码和DES解密得到原始秘密信息。实验结果表明,对印刷量子点的识读时间控制在1.5s以内,印刷量子点植入载体B通道图像的结构相似度SSIM达到0.96以上,峰值信噪比PSNR达到44dB以上,误码率达到10%以上。本研究算法具有突出的检纠错能力、良好的信息隐藏质量、更快的解码识读速率及良好的鲁棒性。When halftone dot image is used to realize information recording and information hiding,there is a problem of high bit error rate caused by information contamination and misjudgment.To this end,an information hiding algorithm for printing-quantum-dots based on Turbo codes was proposed in this study.The printing-quantumdots image generation algorithm adopted DES encryption,two-dimensional parity check coding and Turbo coding to obtain the dot matrix image,and then pseudo-random information scrambling and information modulation were carried out to generate the printing-quantum-dots image.The block reading algorithm was adopted to read the printing-quantum-dots information.Firstly,the local printing-quantum-dots image was sampled,then the information was demodulated and descrambled,finally,the original secret information was obtained by Turbo decoding and DES decryption.The results showed that the reading time of the algorithm for printing-quantum-dots is controlled within 1.5s,and the SSIM value of the B-channel image implanted with printing-quantum-dots is more than 0.96,the PSNR value is more than 44dB,and the bit error rate can reach more than 10%.The algorithm has outstanding error detection and correction ability,good information hiding quality,faster decoding and reading rate and good robustness.

关 键 词：TURBO码 网目调网点 信息防伪 信息隐藏 印刷量子点图像 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]