秘密信息非线性替代的可逆数据嵌入方法

摘要

The secure communication of the secret information on the internet has a good prospect,especially in the field of military and medicine.In medical imagery,military imagery where no distortion of original cover is allowed.Using reversible data hiding we can hide secret into a cover image and the receiver can restore both the secret data and the original image.In this paper we propose a further modification to the schemes of Huang et al.and Sabeen Govind P.V,nonlinear substitution of initial secret data.The embedding of secret information is improved by 1/2,and the image quality is guaranteed.The experimental data show that the method proposed in this paper has a good prospect in the field of large capacity secret information communication.%秘密信息在互联网上安全的通信有着很好的研究前景,特别是军事领域和医学领域,要求不仅保证秘密信息的安全传送,还要能够恢复原始的图像.可逆数据信息嵌入的方法,能够保证秘密信息的安全嵌入,接收者能够提取秘密信息及恢复原始图像.本文为了进一步提高秘密信息的嵌入量,并且保证图像的品质,基于方向插值的方法,较Huang et al.和Sabeen Govind p.V提出的可逆数据嵌入方法有了更好的效果,通过将秘密信息进行非线性替代,秘密信息的嵌入量提高了1/2,而且图像的品质得到了很好的保证.实验数据表明,本文提出的方法在大容量秘密信息的通信领域有很好的推广前景.