基于马赛克技术的秘密图像共享

Secret Image Sharing Based on the Mosaic Technique

在传统的秘密图像共享算法中,通常产生类似噪声的影子图像,极易引起攻击者的注意。针对这一问题,文中根据马赛克技术提出了一种产生有意义的影子图像算法。通过图像相似度的比较,可将秘密图像共享到载体图像中,得到含有秘密图像信息的马赛克图像。然后采用可逆信息隐藏的技术将图像块的位置序列隐藏到马赛克图像中,得到完整的影子图像。通过文中所提算法产生的影子图像,既可避免攻击者的注意又能恢复出无损的秘密图像。

The traditional method of the secret image sharing generates the noise-like image, which can attract the hacker＇s attention easily. To solve this problem, a method of creating the meaningful share image is proposed in this paper. Comparing similarity of the images, we obtain the mosaic images sharing the secret image into the target images. Then, the complete shadow images can be generated after hiding the posit＇ion sequence of the image blocks into the mosaic images by the reversible information hiding technology. The shadow images obtained by the proposed scheme can avoid the attention of the attacker as well as restore the lossless secret image.