发明申请
- 专利标题: MPEG-2 VIDEO WATERMARKING TECHNIQUE
- 专利标题(中): MPEG-2视频水印技术
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申请号: US14790028申请日: 2015-07-02
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公开(公告)号: US20170006301A1公开(公告)日: 2017-01-05
- 发明人: Harel CAIN , Yaron SELLA , Michal DEVIR
- 申请人: Cisco Technology, Inc.
- 主分类号: H04N19/467
- 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
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.
公开/授权文献
- US10123031B2 MPEG-2 video watermarking technique 公开/授权日:2018-11-06