摘要
根据人眼视觉感知特性,提出一种利用边缘检测理论计算容量因子的图像隐写算法.该算法通过像素间的相关性来计算某像素的边缘特性,根据人眼对边缘区域的改动较不敏感这一特性,确定该像素的容量因子,从而控制隐写容量.实验结果表明,该隐写算法具有较大的隐写容量,同时较好地保持了含密图像的不可感知性.
A novel image steganographic algorithm based on edge detection was presented.First,the edge property of a given pixel was calculated using the correlation between neighboring pixels.Then,the characteristic of the human eye being insensitive to changes of the edged area was considered to determine the capacity factor of this pixel.Finally,secret information was embedded under control of the capacity factor.Experimental results show that the proposed algorithm is capable of hiding large amounts of secret data without noticeable distortion.
基金
国家自然科学基金(60772032)资助
关键词
隐写
边缘检测
容量因子
steganography
edge detection
capacity factor
