基于整数小波变换的盲数字水印算法  

A WATERMARKING ALGORITHM IN DWT DOMAIN

作　　者：张晓黎[1] 

机构地区：[1]上海对外贸易学院,上海201600

出　　处：《计算机应用与软件》2007年第4期32-33,40,共3页Computer Applications and Software

基　　金：国家自然科学基金项目资助(编号:40372027)。

摘　　要：提出了一种基于整数DWT域的盲数字水印新算法。算法利用Arnold变换对水印图像进行置乱,增加水印嵌入的安全性;根据水印自身的特点,局部修改载体图像的深层低频小波系数的余数,从而将水印嵌入到载体图像中。水印的提取不需要原始图像。大量仿真结果证明了该算法嵌入的数字水印既有很好的隐蔽性,又有很理想的鲁棒性。The paper presents a novel meaning binary image watermarking algorithm based on integer DWT domain. The proposed scheme utilizes Arnold to scramble the watermark, so that the security of embedding watermarks was enhanced. The method partially changes the arithmetical compliment of wavelet coefficient according to the watermark＇s characteristic ,and so the watermark are embedded to the low frequency coefficients of deep wavelet domain. The original picture is not required for detecting the watermarks. The experimental results demonstrates that the embedded watermarks are invisible and this proposed watermarking algorithm is robust against many common attacks.

关 键 词：盲数字水印 整数小波变换 余数 置乱 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]