Information Hiding for H.264/AVC
Yuting Su · Dianzi xuebao · 2008
During the intra prediction step of H.264/AVC video compression standard,information hiding is implemented by modifying the intra prediction modes of qualified intra 4×4 luma blocks.The modulation is based on the mapping rules between these modes and the hidden bits.The specific positions of the host 4×4 blocks are determined by the features of every block and a position template indicated by the key.The detection of hidden information needs no original media,and merely requires decoding the intra prediction modes from bit stream rather than decoding the whole video.