发明授权
- 专利标题: Two level cross-correlation based system for watermarking continuous digital media
- 专利标题(中): 用于水印连续数字媒体的两级互相关系统
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申请号: US11262006申请日: 2005-10-28
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公开(公告)号: US07715588B2公开(公告)日: 2010-05-11
- 发明人: Shien-Tai Pan , Bing Wang , Hoai Le , Yi Li , Victor Kai-Chieh Liang , Maurice Chow , Richard Thai
- 申请人: Shien-Tai Pan , Bing Wang , Hoai Le , Yi Li , Victor Kai-Chieh Liang , Maurice Chow , Richard Thai
- 申请人地址: US CA Newport Beach
- 专利权人: Lawrence N. Ginsberg
- 当前专利权人: Lawrence N. Ginsberg
- 当前专利权人地址: US CA Newport Beach
- 代理商 Lawrence N. Ginsberg
- 主分类号: G06K9/00
- IPC分类号: G06K9/00 ; H04N7/167
摘要:
A two level cross-correlation based system for watermarking continuous digital media at the system application level. It is a post-compression process for watermarking where no a priori knowledge of the underlying compression algorithm is required. Per each compressed media frame, a current unique digital signature is generated based on the data from the current compressed frame plus the digital signature that has been previously generated. The signature thus generated is then used in conjunction with the next compressed frame to generate the next unique digital signature. All digital signatures are correlated according to the above process until a “reset” signal is issued. A new chain of correlated digital signatures is produced by the system with a pre-determined initial signature.
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