摘要
提出了一种新的基于SVD(奇异值分解)的图像数字水印算法。该算法具有以下几个特点:采用二值图像作为水印;对二值图像进行Arnold置乱预处理;没有直接将二值图像嵌入到载体图像,而是通过二值图像的不同取值,将伪随机序列嵌入到各子块的奇异值中,增加了安全性;具有良好的不可见性;对常见的信号处理具有良好的抵抗攻击能力;采用相关检测提取水印,不需要原始载体图像参与。
A new algorithm of image watermarking based on SVD is presented. Watermark image is firstly permuted with Arnold transformation. According to two different values of watermark image, two random sequences is embeded into singular values of every block. Experimental results demonstrate that the watermark is invisible and robust against common signal processing. When extracting watermark, it does not need the original cover image but two secret keys.
出处
《计算机工程与设计》
CSCD
北大核心
2006年第19期3689-3690,3700,共3页
Computer Engineering and Design
关键词
奇异值分解
二值图像
ARNOLD变换
伪随机序列
盲水印
singular value decomposition
binary image
Arnold transform
pseudorandom sequence
blind watermark
