公开(公告)号：US20170006301A1

公开(公告)日：2017-01-05

申请号：US14790028

申请日：2015-07-02

申请人： Cisco Technology, Inc.

发明人： Harel CAIN ,  Yaron SELLA ,  Michal DEVIR

IPC分类号： H04N19/467 ,  H04N19/593 ,  H04N19/177 ,  H04N19/184 ,  H04N19/61 ,  H04N19/59 ,  H04N19/186 ,  H04N19/174 ,  H04N19/18 ,  H04N19/625 ,  H04N19/176

CPC分类号： H04N19/467 ,  H04N19/174 ,  H04N19/176 ,  H04N19/177 ,  H04N19/18 ,  H04N19/184 ,  H04N19/186 ,  H04N19/59 ,  H04N19/593 ,  H04N19/61 ,  H04N19/625 ,  H04N21/8358

摘要： In one embodiment, a method, system and apparatus for watermarking MPEG-2 compressed video is described, the method, system and apparatus including detecting a pair of neighboring blocks in a MPEG-2 encoded I-frame, determining if the pair of neighboring blocks have dct_dc_differential fields with different values that are within a given threshold value of each other, and embedding a watermark payload bit in the neighboring blocks as a positive result of the determining, the embedding including ordering dct_dc_differential fields of the neighboring blocks such that ordering the dct_dc_differential fields in a first manner encodes a one bit and ordering the dct_dc_differential fields in a second manner encodes a zero bit. Related embodiments of methods, systems, and apparatuses are also described.

摘要翻译： 在一个实施例中，描述了用于对MPEG-2压缩视频进行水印的方法，系统和装置，所述方法，系统和装置包括检测MPEG-2编码的I帧中的一对相邻块，确定该对相邻块 具有在彼此的给定阈值内具有不同值的dct_dc_difference字段，并且将相邻块中的水印有效负载位嵌入作为确定的肯定结果，所述嵌入包括相邻块的排序dct_dc_difference域，使得排序dct_dc_differential 以第一种方式的字段编码一位，并以第二种方式对dct_dc_difference字段排序编码一个零位。 还描述了方法，系统和装置的相关实施例。