摘要
为了提高秘密信息传输的安全性,将离散四元数傅里叶变换(DQFT)应用于彩色图像的信息隐藏技术中,提出了一种在彩色图像中嵌入秘密信息的新技术。应用四元数理论把彩色图像作为一个整体进行傅里叶变换,在彩色宿主图像的DQFT变换域中实现秘密信息的嵌入。实验结果表明,该方法简单易行、保密性强,对高斯噪声和椒盐噪声及剪切、缩放等攻击具有较好的鲁棒性。
This paper proposed a new method for color image steganography using discrete quaternion Fourier transforms（DQFT）.The host color image could be described as a quaternion matrix and should be transformed to the DQFT domain,the secret image should be encrypted first and then the encrypted color image could be embedded into the DQFT domain of the host image.The principle of embedding was detailed and the robustness of the system had been examined experimentally.Experimental results show that this method is robust against Gaussian noise,salt pepper noise,cropping and image scaling attack.
出处
《计算机应用研究》
CSCD
北大核心
2011年第7期2746-2749,共4页
Application Research of Computers
关键词
四元数
离散四元数傅里叶变换
彩色图像
信息隐藏
quaternion
discrete quaternion Fourier transforms（DQFT）
color image
steganography
