一种新的基于H.264/AVC的可逆鲁棒隐写方法

New robust reversible steganography method in H. 264/AVC

提出了一种新的基于H. 264/AVC的可逆鲁棒视频隐写方法。该方法首先利用(t,n)门限秘密共享技术将需要嵌入的秘密信息用多项式分发获得子秘密,再利用BCH码对子秘密进行编码;然后通过H. 264的预测模式选择嵌入位置;最后将编码后的子秘密嵌入到视频的各个帧中。提取时,利用视频中t个编码后的子秘密恢复秘密信息。实验结果标明,该方法在提取秘密信息时能完全恢复原视频,具有较强的比特错、帧错鲁棒性,在随机丢帧率小于等于15%的情况下能完全恢复秘密信息,能效控制帧内失真漂移,视觉效果良好。

This paper proposed a new reversible robust steganography method in H.264/AVC.This paper first distributed the embedded secret data by a specific polynomial and obtain a series of sub-secrets.Then it used the BCH code to encode each group of the sub-secrets and embed the encoded sub-secrets into each frame of the video with prediction mode.And it reco-vered the hidden data by using the encoded t sub-secrets of the video frames.The experiment results shown that the method can recover the original video completely and has the high bit error and frame error robustness.When the random frame rate is less than or equal to 15%,the method can recover the secret data completely.In addition,the method can avoid intra-frame distortion drift and has better visual concealment.