基于马尔科夫链的隐写算法设计

A Write Algorithm Design based on Hidden Markov Chain

针对LSB隐写算法在进行信息隐写过程中,因为被检测的问题深入研究了隐写算法的图像块间关系,以及图像块内的像素点之间关系,提出了一种基于马尔可夫链的图像隐写算法.给出了该算法的设计原理和详细实现过程,计算了图像块细处的马尔可夫转移概率,通过实验分析测试表明笔者所设计的隐写算法,在保证足够的隐写容量前提下,其PSNR值也具备较高的数值,这表明笔者提出的隐写算法在图像隐写能力上,具有较强的图像隐写能力.

In the process of information hiding,the problem of LSB is studied,and the relationship between the image block and the pixels in the image block is studied.A new algorithm based on Markov chain is proposed.The design principle and realization process of the algorithm are given.The Markov transfer probability of image block is calculated.The results show that the PSNR value of the proposed algorithm is also higher.This shows that the algorithm has a strong ability of image steganography.