母版网角对潜像防伪效果的影响  

Influence of master screening angle on hidden image anti-counterfeiting effect

作　　者：韩雪莹 杨熙 王琪 葛乃馨 HAN Xueying;YANG Xi;WANG Qi;GE Naixin(College of Light Industry and Food Engineering,Nanjing Forestry University,Nanjing 210037,China)

机构地区：[1]南京林业大学轻工与食品学院,江苏南京210037

出　　处：《西安理工大学学报》2018年第3期354-358,共5页Journal of Xi'an University of Technology

基　　金：国家自然科学基金资助项目(31270629);江苏省制浆造纸科学与技术重点实验室开放基金资助项目(201513);特殊形态网点设计与防伪应用研究资助项目(2017NFUSPITP352)

摘　　要：以光栅潜像防伪技术为研究背景,探究母版加网角度与潜像防伪的相关性,以获得潜像嵌入时的最适用网版角度,提高防伪质量。针对单通道母版和双通道拼接母版角度对潜像隐藏性与提取显著性的影响进行实验设计、分析与评价。单母版变角度潜像实验中,C通道作为防伪母版,其加网角度依次设计为0°、15°、45°、75°,将防伪信息嵌至不同网角母版中,设计对应光栅提取各角度母版中的潜像,并进行防伪特性评价。双母版变角度拼接潜像实验中,C和M组合成双通道,分别形成六种角度组合母版,将纵分且完全对称的"蝴蝶"形潜像两侧分别嵌入组合母版的左右两边,对防伪特性进行评价。实验结果表明,母版网角会对潜像防伪质量产生影响,45°单母版网角下的防伪效果最佳;双母版网角组合为0°与45°时,综合防伪特性好。研究获得了最适用的母版加网角度,为母版网角的选择提供了理论依据,完善了光栅防伪技术。With the anti-counterfeiting technology of grating hidden image as a background,this paper explored the correlation between anti-counterfeiting master screening angle and hidden image to obtain the most suitable screening angle for hidden image embedding and improve anti-counterfeiting quality.Aiming at understanding the influence of the single master and double splicing master on the concealment and extraction for hidden image,and the experimental design,analysis and evaluation were carried out.The C master was selected as a single master,and its screening angle was designed to be 0°,15°,45°and 75°.Then hidden image information was embedded into the master of different angles.Designing the corresponding grating to extract the hidden image,and the security characteristics were evaluated.The C and M masters were combined into a double master,forming a combination of six angle master.The“butterfly”shape was embedded into the left and right sides of the combined master,and the security characteristics were evaluated.The experimental results showed that screen angle could affect the anti-counterfeiting quality of the hidden image.When the angle of the single master was 45°,the anti-counterfeiting effect was the best.The anti-counterfeiting characteristic was good when the angle combination was 0 and 45°.The most suitable master screening angle was obtained through research,providing a theoretical basis for the selection of the screening angle and improving the grating anti-counterfeiting technology.

关 键 词：防伪母版 加网角度 潜像 隐蔽性 提取性 

分 类 号：TS853.6[轻工技术与工程]