基于系数关系和分形维数的隐藏算法

提出了一种基于系数关系和分形维数的信息隐藏算法，该算法将原始载体图像分割成固定大小的图像块，利用分形维数与图像之间的关系确定每个图像块的特点，结合人类视觉系统（HVS）的特性，选择代表边缘和纹理特征的图像块，对它们进行离散余弦变换，将信息嵌入到变换系数的关系中，隐藏的信息可以是字符序列，数字序列，文本文件，二值图像，灰度图像以及彩色图像等，实验结果表明该算法透明性好，保密性高，对几何攻击，滤波，噪声和压缩等处理具有一定的稳健性。

An Information Hiding Algorithm Based on Coefficients Relationship and Fractal Dimension

An information hiding algorithm is presented, which is based on coefficients relationship and fractal dimension The original image is divided into blocks with fixed size The relationship between fractal dimension and image blocks is used to determine the characters of each block Combined with characteristics of human vision system (HVS), the blocks that represent the edges and texture are selected and DCT is applied to them Information is embedded into the relationship between DCT-coefficients Information includes character sequences, number sequences, text files, binary images, gray images and color images and so on Experimental results show that this algorithm can get good perceptual invisibility, high safety, and robustness against geometry attack, filtering, noises and compression