-
公开(公告)号:US06850567B1
公开(公告)日:2005-02-01
申请号:US09142549
申请日:1998-01-12
IPC分类号: H04N7/32 , G06T1/00 , G11B20/00 , H04N5/913 , H04N7/08 , H04N7/081 , H04N7/24 , H04N7/26 , H04N7/50 , H04N21/2389 , H04N21/8358 , H04N7/12
CPC分类号: G06T1/0085 , G06T2201/0051 , G06T2201/0053 , G11B20/00086 , H04N5/913 , H04N7/24 , H04N19/00 , H04N19/467 , H04N21/23892 , H04N21/8358 , H04N2005/91328 , H04N2005/91335 , H04N2005/91342 , H04N2005/91364
摘要: An MPEG-encoded video signal includes groups of pictures (GOPs), each GOP having an intraframe coded (I) picture and a series of predictively encoded (P) pictures and bidirectionally predictively encoded (B) pictures. Usually, the GOP structure IBBPBBP . . . is used. However, in order to embed a watermark in the MPEG-encoded video signal, the MPEG encoder is forced to produce a GOP structure which does not normally occur, e.g., a GOP including a BPP sequence. Different symbol values can be assigned to different positions of the BPP sequence in the GOP.
摘要翻译: MPEG编码的视频信号包括图像组(GOP),每个GOP具有帧内编码(I)图像和一系列预测编码(P)图像和双向预测编码(B)图像。 通常,GOP结构IBBPBBP。 。 。 用来。 然而,为了在MPEG编码的视频信号中嵌入水印,MPEG编码器被迫产生通常不发生的GOP结构,例如包括BPP序列的GOP。 可以将不同的符号值分配给GOP中的BPP序列的不同位置。