摘要
原有的莫尔纹防伪技术是在印刷过程中将图文信息隐藏在单色版中,通过提取单一的隐藏信息进行防伪,此防伪技术相对简单易复制,且防伪系数较低。本研究提出一种基于莫尔纹的立体防伪方法,该方法以莫尔纹机理和图像加网技术为基础,结合相位调制图文信息隐藏算法,选择四色印刷过程中的不同色版分别实现信息隐藏,通过建立信息的加网参数与解码光栅之间的数学关系,确定解码光栅参数信息,从而提取隐藏的立体图文信息。实验结果表明:该防伪方法可实现双通道信息的隐藏和提取,达到立体的显隐效果,其防伪系数更高,可提高产品的高附加值。
The existing Moire anti-counterfeiting technology always hides graphic information in a monochrome version,and extracts a single hidden information during the printing process,which is relatively simple and easy to be copied,and the anti-counterfeiting coefficient is lower.In this study,a three-dimensional anti-counterfeiting method based on Moire was proposed.Based on the Moire mechanism and image screening technology,this method combined the phase-modulated graphic information hiding algorithm to select different color plates in the four-color printing process to realize information hiding.A decoding grating was made to extract hidden stereoscopic image information by establishing a matching relationship between hidden information parameters and decoding grating.The results showed that the anti-counterfeiting method can realize the hiding and extracting of the double information.It achieved the three-dimensional stereoscopic hidden effect,and had higher anti-counterfeiting coefficient,which can improve the high added value of the product.
作者
郭凌华
党玲玉
耿博
杨闻宇
杨凌霄
温蕾
GUO Ling-hua;DANG Ling-yu;GENG Bo;YANG Wen-yu;WANG Ling-xiao;WEN Lei(College of Bioresources Chemical and Materials Engineering,Shaanxi University of Science&Technology,Xi’an 710021,China;National Demonstration Center for Experimental Light Chemistry Engineering Education,Shaanxi University of Science&Technology,Xi’an 710021,China;Key Laboratory of Paper Based Functional Materials of China National Light In dustry,Shaanxi University of Science&Technology,Xi’an 710021,China;Shaanxi Province Key Laboratory of Papermaking Technology and Specialty,Shaanxi University of Science&Technology,Xi’an,710021,China)
出处
《数字印刷》
北大核心
2019年第2期84-92,共9页
Digital Printing
基金
西安市未央区科技计划(No.201825
No.201862)
关键词
莫尔纹机理
信息隐藏
立体印刷
防伪
Moire mechanism
Information hiding
Three-dimensional printing
Anti-counterfeiting