| 基于DCT与双随机矩阵的图像数字水印方案 |
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| 引用本文： | 王庆梅,汪春生,刘凤玉. 基于DCT与双随机矩阵的图像数字水印方案[J]. 计算机辅助设计与图形学学报, 2004, 16(8): 1127-1133 |
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| 作者姓名： | 王庆梅 汪春生 刘凤玉 |
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| 作者单位： | 南京理工大学计算机科学与工程系,南京,210094;南京理工大学计算机科学与工程系,南京,210094;南京理工大学计算机科学与工程系,南京,210094 |
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| 基金项目： | 国防基础科研项目，江苏省自然科学基金 (BK2 0 0 2 0 80 )资助 |
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| 摘 要： | 在水印的嵌入与检测过程中用到了3个密钥，双随机矩阵和嵌入尺度作为秘密钥保证了水印嵌入的安全性，DCT系数矩阵之和则作为公开钥用于水印信息的部分认证．文中算法实现了将图像作为水印信息隐藏到载体图像中；把水印信息的每一点都通过某种方式嵌入到载体图像的多个点上；使得攻击者在不知道秘密钥的情况下无法删除或改变水印信息．通过实验对嵌入和检测结果进行了比较和分析，表明该算法具有很好的稳健性．
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| 关 键 词： | 数字水印 双随机矩阵 DCT Zigzag变换 |
Image Watermarking Based on Discrete Cosine Transformation and Doubly Stochastic Matrix |
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| Wang Qingmei Wang Chunsheng Liu Fengyu. Image Watermarking Based on Discrete Cosine Transformation and Doubly Stochastic Matrix[J]. Journal of Computer-Aided Design & Computer Graphics, 2004, 16(8): 1127-1133 |
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| Authors: | Wang Qingmei Wang Chunsheng Liu Fengyu |
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| Abstract: | This novel DCT-based approach has three keys, the doubly stochastic matrix along with its coefficients are used to embed watermarking and play the role of private keys, while summation of transformation matrix of watermarking serves as public key. Its detection process is composed of two parts: one needs secrete key, while the other only needs public key. When both parts are correct, the detected image restores the original watermarking. |
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| Keywords: | watermark doubly stochastic matrix DCT Zigzag transform |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
