武汉理工大学《信息处理课群综合训练与设计》课程设计
目 录
摘 要..................................................................................................................................................................1
Abstract..............................................................................................................................................................1
1 数字水印概念................................................................................................................................................2
1.1 数字水印分类.....................................................................................................................................2
1.2 数字水印作用....................................................................................................................................3
1.3 数字水印研究现状及未来................................................................................................................4
2 数字水印算法................................................................................................................................................4
2.1 数字水印基本原理............................................................................................................................4
2.2 数字水印通用模型............................................................................................................................5
2.3 典型数字水印算法............................................................................................................................6
2.3.1 基于空域的数字水印算法.......................................................................................................6
2.3.2 基于频域的数字水印算法.......................................................................................................7
2.3.3 基于压缩域的数字水印算法...................................................................................................7
2.3.4 NEC算法..................................................................................................................................8
2.3.5 生理模型算法..........................................................................................................................8
2.4 离散余弦变换（DCT）算法............................................................................................................8
2.4.1 DCT变换公式..........................................................................................................................8
2.4.2 二维DCT的性质......................................................................................................................9
2.5 离散余弦变换的水印嵌入..............................................................................................................10
2.6 离散余弦变换的水印提取..............................................................................................................10
3 数字水印算法的MATLAB编程..................................................................................................................11
3.1 数字水印的嵌入..............................................................................................................................11
3.2 数字水印的提取..............................................................................................................................13
4 数字水印的抗攻击实验..............................................................................................................................14
4.1 噪声攻击..........................................................................................................................................15
4.2 滤波攻击..........................................................................................................................................16
4.3 压缩攻击..........................................................................................................................................17
4.4 剪切攻击..........................................................................................................................................17
4.5 旋转攻击..........................................................................................................................................18
4.6 探究嵌入因子对实验的影响..........................................................................................................19
5 小结与体会..................................................................................................................................................20
参考文献.........................................................................................................................................................21
附录.................................................................................................................................................................21
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2022-05-30
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