Group-based joint coding and embedding technique for multimedia fingerprinting

This paper proposes a group-based fingerprinting scheme employing a joint coding and embedding strategy totrace multimedia distribution and proactively prevent the leak of multimedia information. Taking advantage of
the prior knowledge on the collusion pattern, we construct compact fingerprints that consist of user sub-codeword
and group sub-codeword and are embedded in host signal via spread spectrum technique. The detection is done
in two levels, which identifies guilty groups through correlation and then narrows down to specific colluders
through minimum distance decoding. Experimental results show that the proposed method provides higher
collusion resistance than the existing non-grouped fingerprint codes.