基于DCT的图像水印算法研究与实现  

Research and Implementation of Blind Watermarking Algorithm of Images Based on DCT

作　　者：张伟[1] 陈新龙[1] 詹斌[1] 

机构地区：[1]重庆大学通信工程学院,重庆400030

出　　处：《计算机技术与发展》2009年第9期157-159,176,共4页Computer Technology and Development

摘　　要：对于数字媒体信息安全方面提出了一种基于DCT变换的数字图像盲水印嵌入算法。通过对水印图像进行置乱加密与随机产生嵌入位置来保证水印安全性,并由MATLAB实验证明此算法具有较好的不可见性,能够抵御JPEG压缩、均值滤波、图像锐化和部分剪切的攻击,具有较好的鲁棒性,并且该盲水印嵌入算法中,对嵌入水印的提取不需要原始图像,这给数字图像的版权检测提供了便利。Gives out a blind watermarking algorithm for digital image based on DCT which is used for the security of digital media information. This algorithm encrypts the watermarking image and chooses embed - position randomly for the sake of security. Then it uses MATLAB to indicate that the algorithm is imperceptibility and robust to some common attacks. In fact, blind watermarking algorithm can pick up watermark without original image, which conveniences the copyright protection of digital image communicated on Interact.

关 键 词：数字盲水印 离散余弦变换 鲁棒性 MATLAB 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]