Date Added: Feb 2012
Digital fingerprinting achieves piracy tracing through embedding a unique serial number called fingerprint into each distributed digital copy secretly. Once an unauthorized content copy is discovered somewhere, the embedded fingerprint can uniquely identify the source of the pirated copy. How to defense collusive attack is one of the key problems when designing multimedia digital fingerprinting systems. Each colluder takes the equal risk in average collusion attack, which is fair to all colluders. Therefore, the average collusion attack is the most widely used attack model.