发明者
Rade Petrovic, Babak Tehranchi, Joseph M Winograd
发表日期
2008/5/6
专利局
US
专利号
7369677
专利申请号
11410961
简介
Methods for adapting the operation of a system in response to the detection of embedded Watermarks from a digital host content are provided. A digital host content is received and examined for the presence of Watermarks. In response to the detection of embedded Watermarks and in accordance With the value, type, density or spacing of the detected Water marks, one or more system reactions may take place. These reactions include conditionally alloWing the system to resume its normal operation, prohibiting the system from resuming its normal operation, degrading the quality of the digital host content or changing the security status of the digital host content. In response to the extraction of Weak Watermarks that do not meet the desired system require ments, the extraction operation may be modi? ed or extended to enable the detection of strong Watermarks.
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