基于频带划分关键帧编码的信息隐藏算法

Information Hiding Algorithm Based on Frequency Band Division Key Frames Coding

信息隐藏技术是保证网络数据传输安全性和保密性的关键技术,设计信息隐藏算法提高数据保密通信性能。传统方法采用全监督学习加密算法,无法获得足够泛化性能的控制密钥,抗噪性能差,信息隐藏效果不好。提出一种基于频带划分关键帧编码的信息隐藏算法。对簇内的成员进行管理,对WZ帧进行DCT变换,得到DCT系数带,每个系数带进行均匀量化,构造节点数据并查集把Wyner-Ziv编码思想应用到关键帧中,DCT变换后的关键帧进行频带划分,设计低频带编解码方法,提高信息隐藏性能。实验结果表明,该算法能有效实现信息隐藏,数据的编码和解码性能较好,信噪比提高,性能优于传统算法。

The information hiding technology is the key technology to guarantee the network transmission of data security and confidentiality of information hiding algorithm, design to improve the performance of data encryption communication. The traditional method of using supervised learning encryption algorithm, unable to obtain sufficient control key generalization performance, poor anti noise performance, information hiding effect is not good. Put forward a kind of frequency band division of key frames coding hiding algorithm based on information. Management members of the cluster, DCT transform is performed on the WZ frame, DCT coefficients were obtained with. Each coefficient with uniform quantization, tectonic node data and check collection to Wyner-Ziv coding idea is applied to the key frame, frequency division key frame after the DCT transformation, the design of low frequency band coding and decoding methods, to improve the performance of information hiding. The experimental results show that, the algorithm can effectively implement information hiding, encoding and decoding performance data better, improve SNR, the performance is better than the traditional algorithm.