摘要
提出了一种利用Arnold对称性变换的图像信息隐藏算法,待隐藏的秘密信息以及公开的承载信息均为灰度级静止图像。首先对秘密图像进行Arnold置乱变换,形成秘密信息,然后对载体图像进行DCT变换,秘密信息通过量化处理嵌入到DCT域中。对提出的算法进行了各种攻击测试。实验表明,该算法对JPEG有损压缩、中值滤波攻击和高强度噪声攻击具有强稳健性,具有很好的透明性和鲁棒性,实用性也较高。
A picture information hide algorithm by Arnold Symmetrial transformation is proposed,where the secret information to be hided and carrying public information are static picture of grey level First,Arnold transformation makes the secret picture into disurdre to form secret information. After that DCT is transformed into picture of carrier ~ the secret information is embedded in DCT domain through quantization. Various attack tests for proposed algorithm are carried on. Test result shows that the algonthm has a strong firmness for JPEG lossy compression, medium value filtring attack and high strenghth noise attack,and very good transparency and robustness.
出处
《电脑开发与应用》
2007年第11期5-7,共3页
Computer Development & Applications
基金
河南省科技攻关项目(0624220044)资助
关键词
ARNOLD变换
小波变换
信息隐藏
Arnold transformation,wavelet transform,information hiding
