摘要
数字水印技术是保护数字媒体安全的一种有效手段,从健壮性角度考虑,采用变频域方法实现数字水印比较理想。论文通过引入随机数调整系数矩阵的交流系数值方法,提出了一种基于模2加运算的DCT变换域盲图像水印算法,实验结果表明,该算法可有效地防止图像受损带来的水印信息丢失,对剪切、涂改等有损攻击具有良好的健壮性。
Digital watermarking technique is an effective method to protect safety of digital media,Algorithm of watermarking in transform domain is relatively good in the way of robustness.This paper applies an algorithm of blind image watermarking in DCT domain based on module 2 add operation through a method of introducing random and adjusting AC coefficient of matrix,Experiments show that this algorithm can effectively prevent information lose of watermarking from damaging and it is robust against cut and alternation.
出处
《计算机工程与应用》
CSCD
北大核心
2004年第30期87-89,共3页
Computer Engineering and Applications
基金
浙江省自然科学基金重点资助项目(编号:ZD0101)
关键词
数字水印
DCT
ARNOLD变换
盲水印
digital watermarking,DCT,Arnold transformation,blind watermarking
