基于网点式光栅的半色调图像防伪技术研究  

Halftone anti-counterfeiting technology based on dot grating

作　　者：郭凌华[1] 陈燕[1] 刘国栋[1] 邢铁豆 

机构地区：[1]陕西科技大学轻工与能源学院陕西省造纸技术及特种纸品开发重点实验室,陕西西安710021

出　　处：《陕西科技大学学报（自然科学版）》2015年第3期33-36,41,共5页Journal of Shaanxi University of Science & Technology

基　　金：陕西省教育厅重点实验室科研项目(2011HBSZS014);陕西科技大学博士科研启动基金项目(BJ13-01)

摘　　要：基于莫尔条纹形成的几何光学原理,对半色调图像的网点进行一定路径的偏移,嵌入隐藏信息,再根据网点式解码光栅与含有隐藏信息的编码光栅参数的匹配关系,制作对应的网点式解码光栅,提取隐藏信息。在该防伪技术中隐藏信息达到了较好的隐藏效果,叠加相应的网点式解码光栅之后,隐藏信息能够清晰显现。此技术可应用到印刷品的防伪中,提高印刷品的附加值.Based on geometrical optics principle of moir6 fringe formation,the hidden information is embedded by shifting the dot of halftone image. According to the matching relation between the dot decoding grating and the encoding grating containing hidden information, the corresponding dot decoding grating is made,and the hidden information is extracted. Hidden information has reached a good hidden effect in this anti-counterfeiting technology, after su- perposing the corresponding dot decoding grating, hidden information is clearly revealed. This technology can be applied to the anti-counterfeiting printing, improving the added value of prints.

关 键 词：网点式光栅 信息隐藏 光栅匹配 半色调图像防伪 

分 类 号：TS853.6[轻工技术与工程]