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。
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.
出处
《计算机工程》
CAS
CSCD
北大核心
2011年第20期111-113,共3页
Computer Engineering
基金
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)
关键词
视觉冗余
空域隐写算法
矩阵运算
EMD算法
高嵌入率
vision redundance
space domain steganograph algorithm
matrix operation
Exploiting Modification Direction（EMD） algorithm
high embedding rate
