| 摘要 |
A method for collaboratively watermarking a media content available on a media server and produced by users in a first list of users, said media content comprising a first watermark embedded therein identifying the users of said first list of users, said method comprising, for an additional user that does not belong to the first list of users and modifies the media content, the acts of obtaining the modified media content and embedding by the media server into the modified media content a second watermark identifying a second list of users, said second list of users comprising the first list of users and the additional user. |
