发明名称 |
METHOD FOR PROTECTING DIGITAL CONTENT AGAINST MINORITY COLLUSION ATTACKS |
摘要 |
A method and system of detecting colluders conducting a collusion attack including a minority-type collusion attack on a digital product includes the generation of codewords used as watermarks in the digital product. The inner code of the codewords is generated using permutations of rows in a Hadamard matrix and concatenating them together. A typical outer code of the codeword is the Reed Solomon code. An adaptive detector is able to accurately detect one of three or more colluders of a minority-type attack. Prior art schemes using an error correcting code-based watermarking mechanism with an inner code fail to detect colluders with a minority-type collusion attack which includes three colluders.
|
申请公布号 |
US2011182466(A1) |
申请公布日期 |
2011.07.28 |
申请号 |
US20080998185 |
申请日期 |
2008.09.26 |
申请人 |
THOMSON LICENSING A CORPORATION |
发明人 |
LIN WAN-YI;HE SHAN;BLOOM JEFFREY ADAM |
分类号 |
G06T1/00 |
主分类号 |
G06T1/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|