一种基于LSB灰度图像信息隐写的改进算法

An Improved Algorithm Based on LSB Gray Image Information Steganography

笔者介绍了LSB算法和Logistic映射原理,提出了一种新的基于LSB的图像信息隐藏改进算法,该算法利用logistic映射的混沌特性置乱图像,并利用logistic参数u使图像产生两个序列,两个序列进行运算与秘密信息对比并决定是否修改LSB位从而实现信息的隐写。算法充分利用了图像像素高比特位信息,自适应性较强。实验结果表明,该算法图像失真少,安全性较好。

The author introduces the LSB algorithm and Logistic mapping principle,and proposes a new improved algorithm for hiding LSB image information.This algorithm uses the chaotic characteristics of logistic mapping to scramble the image,and uses the logistic parameter u to make the image generate two sequences.Then,operation and the secret information comparison are implemented to determine whether to modify the LSB bit to realize steganography of the information.The algorithm makes full use of the image pixel high bit information and has strong adaptive ability.The experimental results show that the algorithm has less image distortion and better security.