| With the popularization of Internet and the development of multimedia technique, all types of digital products are widely used. As digital products can easily be copied and disseminated, digital copyright protection issues have become prominent increasingly, and digital copyright protection has become a very important and urgent issue in the digital world.The current anti-collusion coding based on combinatorics leads to the existence of some inherent weaknesses of digital fingerprinting, such as coding inefficient and tracking inefficient. Meanwhile existing digital fingerprint matching methods are based on correlation detection, which still have some problems such as hard to determine the threshold and the lower accuracy.A anti-collusion thinking of fingerprinting based on Residual-Characteristics-Tracking is presented, which proposes that one coconspirator can be tracked by tracking the residual characteristics; About coding methods, a coding method of Linear-Unrelated-Feature is presented, the mathematical description and characters of this code are given, and a method of digital fingerprint generating is presented; About matching methods, a digital fingerprint matching method based on synergetics is proposed, which is proved by experiments that it has higher matching accuracy than existing matching methods.Based on the coding method of Linear-Unrelated-Feature and the matching method based on synergetics, a anti-collusion scheme based on Residual-Characteristics-Tracking is proposed. The experimental results demonstrate that the fingerprinting tracking system in this scheme has higher efficiency as well as ensuring the robustness and the anti-collusion of fingerprinting. Consequently, it demonstrates that the anti-collusion thinking and scheme of fingerprinting based on Residual-Characteristics-Tracking are feasibility. |
