一种基于LU分解的脆弱水印算法  

作　　者：胡云[1] 赵辉[2] 

机构地区：[1]北京邮电大学信息安全中心,北京100876 [2]郑州信息工程大学信息安全学院,河南郑州450002

出　　处：《电视技术》2003年第8期67-69,共3页Video Engineering

摘　　要：提出了一种基于LU分解的脆弱水印算法Ⅰ,该算法能检测到嵌入水印后图像的任何微小改动,且具有数据嵌入量小,嵌入后图像降质少和对多种攻击具有敏感性的优点。在此基础上,为增加对图像改变的定位性能,还提出了算法Ⅱ。算法Ⅱ能有效地对图像的改动进行定位,同时可以抵抗特殊的“剪切-粘贴”攻击。实验结果很好地验证了以上结论。A fragil e watermarking scheme Ⅰbased on LU decomposition for authentication of image is p roposed in this pa-per.It provides so many good qualities such as detecting an y modification of watermarked images while the quality of water-marked images k eeping high,the sensitivity to the attacks on watermarked images and the small quantity of embedded data.To locate the position of changed pixels,we propose an extended scheme Ⅱ.It can locate the position effectively,further-more it can resist against the special attack-″cut and paste attack″.Experimental results have validated the above conclusion.

关 键 词：脆弱水印 算法 LU分解 数字水印技术 

分 类 号：TN919.81[电子电信—通信与信息系统] TP391.41[电子电信—信息与通信工程]