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New Bounds on Separable Codes for Multimedia Fingerprinting

机译:多媒体指纹可分离代码的新界限

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摘要

Multimedia fingerprinting is an effective technique to trace the sources of pirate copies of copyrighted multimedia contents. Separable codes were introduced to detect colluders taking part in the averaging attack, which is the most feasible approach to perform a collusion attack. In this paper, we provide some improved bounds for the size of separable codes. Using a combinatorial technique named grouping coordinates, we have greatly reduced the upper bound. On the other hand, we also provide some lower bounds for the size of separable codes by both probabilistic and deterministic construction methods. In particular, ( overline {2}) -separable codes with asymptotically optimal rate are obtained by the deletion method.
机译:多媒体指纹识别是一种跟踪受版权保护的多媒体内容的盗版副本来源的有效技术。引入了可分离的代码来检测参与平均攻击的共谋,这是执行共谋攻击的最可行方法。在本文中,我们为可分离代码的大小提供了一些改进的界限。使用称为分组坐标的组合技术,我们大大减小了上限。另一方面,我们还通过概率和确定性构造方法为可分离代码的大小提供了一些下限。特别地,通过删除方法获得了渐近最优速率的 (上划线{2}) 可分离的代码。

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