A DWT-based Video watermarking scheme resilient to MPEG-2 compression and collusion attacks

A blind watermarking algorithm for digital video resilient to MPEG-2 compression combined with several attacks is proposed. The proposed algorithm embeds binary visually recognizable patterns, such as the owner´s logotype, in the DWT domain of some randomly selected video frames. To increase the security, the watermark data is transformed into a noise-like pattern by using a chaotic mixing method before the embedding process. The main advantage of the proposed algorithm is its simplicity, blindness and robustness. Extensive simulations show the watermark imperceptibility and robustness against several video degradations and other combined attacks. These results also show that the extracted watermark data from the watermarked video sequences using the proposed blind scheme is enough clear even after several attacks.