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。

关键词: 视觉冗余, 空域隐写算法, 矩阵运算, EMD算法, 高嵌入率

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.

Key words: vision redundance, space domain steganograph algorithm, matrix operation, Exploiting Modification Direction(EMD) algorithm, high embedding rate

中图分类号: 

• TP391