一种基于数据序列相关性的小波域信息盲隐藏算法

利用数据序列之间的相关特性,文章提出了一种基于数据序列相关性的小波域信息盲隐藏算法。在信息嵌入过程中,对隐藏信息进行信息分存,通过对原始图像进行小波变换,并选择相应位置的高频系数组成数据序列,利用十组替代数据序列将隐藏信息嵌入。提取时,用含密的数据序列与替代数据序列进行比较,按照相关性最大的原则来提取信息。算法采用混沌序列进行加密控制。实验结果表明,这种方法有效,易于实现,特别是隐藏量较大。

Blind Information Hiding Arithmetic Based on Correlation of Data Sequences in DWT Domain

Based on the correlation of data sequences, a blind information hiding arithmetic was proposed based on correlation of data sequences in DWT domain. During the process of information embedment, hiding information was divided into three parts first. Wavelet transform method was implemented for original image. Data sequences were created from the coefficients of detail in the homologous places, and the hiding information was embedded into them with ten group substitutes. During the process of information extraction, compared the data sequences with substitutes, the hiding information was recovered by correlation maximum method. The arithmetic was encrypted with chaotic sequences. Experimental results show this method is effective and easy to realize, and especially it has high capacity of hiding-information.