| 变换域加密全息水印算法 |
| |
| 引用本文： | 李孟涛,孙刘杰,刘真.变换域加密全息水印算法[J].包装工程,2011,32(15):22-24. |
| |
| 作者姓名： | 李孟涛 孙刘杰 刘真 |
| |
| 作者单位： | 上海理工大学,上海,200093;上海理工大学,上海,200093;上海理工大学,上海,200093 |
| |
| 基金项目： | 上海市科委基金项目(09220502700) |
| |
| 摘 要： | 提出了一种基于DCT-DWT的彩色图像全息水印算法。为了保证水印信息的安全性,该算法首先对水印信息进行双随机相位调制,并生成水印全息图;其次,将载体图像在Lab空间内的L分量进行4×4分块,对每一分块进行DCT变换,抽取每个矩阵的中低频系数,组成一个新的矩阵,并对之进行小波分解,将水印全息图嵌入到它的中低频小波系数上。实验结果表明,基于DCT-DWT变换的水印算法具有较好的不可见性,对常见的攻击具有强鲁棒性。
|
| 关 键 词： | 离散余弦变换 离散小波变换 双随机相位加密 数字水印 |
| 收稿时间： | 2011/5/13 0:00:00 |
| 修稿时间： | 2011/8/10 0:00:00 |
Encrypted Holographic Watermarking Algorithm Based on Transform Domain |
| |
| LI Meng-tao,SUN Liu-jie and LIU Zhen.Encrypted Holographic Watermarking Algorithm Based on Transform Domain[J].Packaging Engineering,2011,32(15):22-24. |
| |
| Authors: | LI Meng-tao SUN Liu-jie and LIU Zhen |
| |
| Affiliation: | LI Meng-tao,SUN Liu-jie,LIU Zhen(University of Shanghai for Science and Technology,Shanghai 200093,China) |
| |
| Abstract: | A color image holographic watermarking algorithm based on DCT-DWT was proposed.In order to ensure the security of watermark,the watermark information was modulated by double random phase plates and generated into a hologram watermark;meanwhile,the carrier image’s L vector in Lab space was partitioned into 4 × 4 blocks,which were transformed by DCT.The low frequency components were extracting from each matrix to form a new matrix,which was decomposed by DWT.The holographic watermark information was embedded into the low-frequency wavelet coefficients.Experimental results showed that the watermarking algorithm based on DCT-DWT is invisible,and robust to common attacks. |
| |
| Keywords: | discrete cosine transform discrete wavelet transform double random phase encryption digital watermark |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《包装工程》浏览原始摘要信息 |
|
点击此处可从《包装工程》下载全文 |
|
