TY - CONF T1 - Collusion-Resistant Fingerprinting for Compressed Multimedia Signals T2 - Acoustics, Speech and Signal Processing, 2007. ICASSP 2007. IEEE International Conference on Y1 - 2007 A1 - Varna,A.L. A1 - He,Shan A1 - Swaminathan,A. A1 - M. Wu A1 - Lu,Haiming A1 - Lu,Zengxiang KW - based KW - compression;Gaussian KW - compression;multimedia KW - dithering;collusion-resistant KW - fingerprinting;multimedia KW - Gaussian KW - processes;data KW - sequences;anticollusion KW - signals KW - spectrum KW - spread KW - systems; AB - Most existing collusion-resistant fingerprinting techniques are for fingerprinting uncompressed signals. In this paper, we first study the performance of the traditional Gaussian based spread spectrum sequences for fingerprinting compressed signals and show that the system can be easily defeated by averaging or taking the median of a few copies. To overcome the collusion problem for compressed multimedia host signals, we propose a technique called anti-collusion dithering to mimic an uncompressed signal. Results show higher probability of catching a colluder using the proposed scheme compared to using Gaussian based fingerprints. JA - Acoustics, Speech and Signal Processing, 2007. ICASSP 2007. IEEE International Conference on VL - 2 M3 - 10.1109/ICASSP.2007.366198 ER -