| 基于DCT域的加密二值图像数字水印新算法 |
| |
| 引用本文： | 王慧琴,李人厚,王志雄.基于DCT域的加密二值图像数字水印新算法[J].小型微型计算机系统,2003,24(1):103-106. |
| |
| 作者姓名： | 王慧琴 李人厚 王志雄 |
| |
| 作者单位： | 1. 西安交通大学,系统工程研究所,陕西,西安,710049;西安建筑科技大学,信控学院,陕西,西安,710055
2. 西安交通大学,系统工程研究所,陕西,西安,710049 |
| |
| 基金项目： | “陕西省自然科学研究计划”基金(项目编号 :2 0 0 1X2 9)资助 |
| |
| 摘 要： | 数字水印技术是解决数字媒体版权保护的有效方法.本文提出了一种基于DCT(Discrete CosineTransform)域的序列密码加密图像数字水印新算法.利用线性移位寄存器产生序列密码,对二值图像水印进行加密,由于二值图像水印含有密钥信息,算法具有密码学意义下的安全性.利用人类视觉系统(HVS)的特性,将水印自适应地嵌入到原始宿主图像的DCT域的直流和低频分量中.大量仿真结果证明了该算法的有效性和鲁棒性.
|
| 关 键 词： | HVS 图像数字水印 DCT 序列密码 线性移位寄存器 |
| 文章编号： | 1000-1220(2003)01-0103-04 |
| 修稿时间： | 2001年4月27日 |
An Encrypted Binary Image Digital Watermarking Algorithm Based on DCT |
| |
| WANG Hui qin ,LI Ren hou ,WANG Zhi xiong.An Encrypted Binary Image Digital Watermarking Algorithm Based on DCT[J].Mini-micro Systems,2003,24(1):103-106. |
| |
| Authors: | WANG Hui qin LI Ren hou WANG Zhi xiong |
| |
| Affiliation: | WANG Hui qin 1,2,LI Ren hou 1,WANG Zhi xiong 1 1 |
| |
| Abstract: | Digital watermarking techniques have been considered as an effective solution to protecting the copyright of multimedia data. In this paper, an encrypted binary image digital watermarking algorithm based on DCT domain is proposed. At first, we design a binary image watermarking signal and encrypted it by a sequence cipher before it was embedded. Then, by exploiting the visual masking and texture characteristics of Human Visual System (HVS) to ensure the self adaptation, watermark was embedded into the DC and lower frequency coefficients of the original image. The experimental results show that the watermarks are invisible and robust against noise and commonly used image processing methods such as Guassian, Salt, Pepper noise, JPEG, crop procession etc. |
| |
| Keywords: | HVS binary image digital watermarking DCT sequence cipher |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
