Coded Fingerprinting Codes Based on Delay Embedding

Digital fingerprint is an important application of watermarking technique which is used to trace the traitors who redistribute multimedia content illegally. To support more users the delay-based orthogonal fingerprint embedding was proposed which is robust against collusion attack while the performance of delay-based coded fingerprinting is not investigated. In this paper, the coded fingerprinting such as N-secure fingerprint code based on delay embedding is constructed. Then the fingerprint code is embedded using the spread spectrum watermarking techniques. In the traitor tracing process, the correction detection is used to detect the hiding codes and the delays. At last the colluders can be traced by the hiding codes and the delays. Based on the N-secure fingerprint code, the theoretical analysis and the experiments show the scheme can increase the supported users form N to N*N and is robust against more colluders' attack.