摘要
由于打印扫描后的信息失真,给应用于需要打印扫描的纯文本文件添加暗水印造成了很大的难度。本文提出了一种基于文档结构微调法的暗水印嵌入提取方法,通过改变行间距来添加水印信息。解决了打印扫描后信息失真、干扰噪声大的问题,具有较高的鲁棒性,并对打印机和扫描仪的精度要求均不高。
Because of information distortion for the printed/scanned file,it is difficult to add shaded watermarks on the word text.This paper presents a method to add watermarks by changing the line spaces,based on shaded watermarks embed method by text modification.The method solves the information distortion of the printed/scanned documents with high robustness.And the method is also applied to the daily-used printer and scanner without high accuracy.
引文
[1]李雷达,郭宝龙,表金峰.基于奇偶量化的空域抗几何攻击图像水印算法[J].电子与信息学报,2009,31(1);134-138
[2]朱从旭,陈志刚.一种基于混沌映射的空域数字水印新算法[J].中南大学学报(自然科学版),2005,36(2);272-276.
[3]邵利平,覃征,衡星辰.一种基于图像置乱变换的空域图像水印算法[J].计算机工程,2007,33(2);122-124.
[4]刘丽,周亚建,张斌,等.基于DCT和SVD的QR码数字水印算法[J].红外与激光工程,2013,42(S2);304-311.