| 基于矩阵运算的二维EMD算法 |
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| 引用本文： | 刘圆,潘峰.基于矩阵运算的二维EMD算法[J].计算机工程,2011,37(20):111-113. |
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| 作者姓名： | 刘圆 潘峰 |
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| 作者单位： | 1. 武警工程学院 网络与信息安全武警部队重点实验室,西安,710086
2. 武警工程学院 网络与信息安全武警部队重点实验室; 信息安全研究所,西安710086 |
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| 基金项目： | 国家自然科学基金资助项目(60842006);武警工程学院基础研究基金资助项目(WJY201027) |
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| 摘 要： | 为利用人类视觉冗余,达到更高嵌入率,在EMD算法的基础上提出一种二维高嵌入率的空域隐写算法.将载体图像像素序列划分成大小为m×n的矩阵块,结合EMD算法与矩阵运算将编码后的秘密数据,分别独立地嵌入到矩阵块的行和列上,通过性能分析得出矩阵块的行数m的最佳取值为1.实验结果表明,相比EMD算法,该算法的嵌入率有较大提高.
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| 关 键 词： | 视觉冗余 空域隐写算法 矩阵运算 EMD算法 高嵌入率 |
| 收稿时间： | 2011-04-06 |
Two-dimensional EMD Algorithm Based on Matrix Operation |
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| LIU Yuan,PAN Feng.Two-dimensional EMD Algorithm Based on Matrix Operation[J].Computer Engineering,2011,37(20):111-113. |
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| Authors: | LIU Yuan PAN Feng |
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| Affiliation: | a,b(a.Key Laboratory of Network and Information Security Under the Chinese Armed Police Force;b.Institute of Information Security,Engineering College of Chinese Armed Police Force,Xi’an 710086,China) |
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| Abstract: | In order to make good use of human vision redundance and obtain a higher embedding rate,on the basis of Exploiting Modification Direction（EMD）,a new two-demensional steganograph scheme with high embedding rate in space domain is proposed.Dividing the cover image into m×n matrix blocks,the coded secret message is embedded in each matrix block by using EMD algorithm independently in rows and lines,and the optimal m of matrix rows equaling 1 is presented.The analysis of performance shows that the proposed method has better performance on the embedding rate than the EMD algorithm does. |
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| Keywords: | vision redundance space domain steganograph algorithm matrix operation Exploiting Modification Direction（EMD） algorithm high embedding rate |
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