基于四边边缘匹配的图像信息隐秘法

将人眼的视觉特性和图像信息隐藏技术结合,文章提出了基于HVS特性的信息隐秘方法,设计实现了一种基于四边边缘匹配的自适应信息隐秘算法,利用嵌入信息像素相邻的四个像素信息估计嵌入容量,依据载体图像局部的不同特性自适应地隐藏秘密信息.实验结果表明,这种方法比最低有效位算法嵌入容量大,而且不会产生易觉察的失真.此外,隐蔽图像中嵌入数据的提取与原始图像无关.同时,采用伪随机机制的图像遍历顺序,提高了信息的隐蔽性.

Image Steganographic Method Based on Four-sided Side Match

The paper combined characteristics of the human eyes with image information hiding technique,and a steganographic algorithm based on HVS was proposed,An steganographic adaptive algorithm based on four-sided side match was presented,using four blocks around an input pixel to make more estimation on embedding capacity,with the purpose of hiding secret information self-adaptively according to the different local feature of cover image,Experimental results showed that this method can embed more data than LSB algorithm without perceptual distortion,Besides,the embedding data can be extracted without referencing the original image.At the same time, an image traversal sequence based on pseudo-random scheme was proposed, achieving the better imperceptibility.