形状数理论及其在安全印刷中的应用  

Shape Number and It's Application in Security Printing

作　　者：亓文法[1] 杨斌[1] 李晓龙[1] 

机构地区：[1]北京大学计算机科学技术研究所,北京100871

出　　处：《中国印刷与包装研究》2009年第2期16-21,共6页China Printing Materials Market

摘　　要：本文提出了一种基于防复印底纹的文档保护方法。其中,防复印底纹包括背景图案区域和标记图形单元区域,标记图形单元的形状和位置关系代表了安全标识信息。同时提出了一种快速的安全标识信息识别算法。实验表明,该算法效率较高,实现简单,占用资源较少,适于嵌入到图像复制设备的硬件芯片中,从而达到对安全文档实时保护的目的。In this paper, based on the anti-copy shading, a document protection method is proposed, in which the anti-copy shading includes background pattern area and label graphic unit area. The shape and position of label graphic unit represent the security identifier information. In addition, a fast algorithm is proposed to detect the security identifier information. Extensive experimental results show that the algorithm is adapt to be embedded into the hardware chip of image copying equipment to achieve the real-time protection for the security document with high efficiency, easy implementation, and fewer resource resuming.

关 键 词：防复印 安全印刷 形状数 图像处理 标记图形单元 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]