一类DCT域鲁棒的数字水印算法  

A Class of DCT Domain Robust Digital Watermark Algorithms

作　　者：赵彦玲[1] 郑晓势[1] 刘广起[1] 李娜[1] 周伟[1] 

机构地区：[1]山东省计算中心,山东济南250014

出　　处：《四川大学学报（工程科学版）》2007年第S1期272-276,共5页Journal of Sichuan University (Engineering Science Edition)

基　　金：山东省优秀中青年科学家科研奖励基金资助项目(2004BS01005)

摘　　要：首先分析DCT变换后直流系数的特点并确定嵌入位置,然后提出一类根据水印信息量化DCT直流系数嵌入水印的算法。该类算法对于音频和图像数据均具有较好的透明性和鲁棒性,能有效对抗常见音频和图像攻击。DC coefficients were analogized after DCT transformation,and they were considered to be appropriate embedded places.Then a new algorithm according to watermark information was proposed based on DC coefficients quantization,which was transparent and robust for audio and image data.It can resist efficiently against common attacks in audio and image data.

关 键 词：DCT变换 直流系数 量化 数字水印 鲁棒性 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]