Dual-tree complex wavelet transform blind video watermark based on complete complementary codes

In order to improve the noise immunity performance of blind watermark algorithm of dual-tree complex wavelet transform (DT - CWT), an improved measure is proposed and is applied to the art of video, learning from complete complementary codes used in spread spectrum communication. The algorithm utilizes Hadamard matrix to create the complete complementary codes and utilizes a secret key to expand the capacity of codes. Additionally, the complementary codes are embedded into DT-CWT domain of luminance component in each frame of the video. The experiment demonstrates that this algorithm inherits the performance to resist the compression, and possess the noise immunity performance of the watermark algorithm of complete complementary codes.