Abstract In order to solve the limitations of the digital video watermarking algorithm, this paper proposes a new robust video watermarking algorithm using combining discrete cosine transform (DCT) and discrete wavelet transform (DWT) techniques. First of all, the video frames are randomly selected and then, the DCT algorithm is applied to the selected video frames. After that, the first column of selected video frames are scrambled using Arnold algorithm. Furthermore, every column with 4 DC coefficients will be reshaped and transformed into four different sub-bands using DWT technique. Next, the watermark is embedded into approximation sub-band. The proposed algorithm is easy to carry out because it provides random frames with no special requirements for video frames. The experiment results indicate that this algorithm can resist against different kinds of watermarking attacks, such as Gaussian filter attack, sharpen attack etc. In addition, it also illustrates that the proposed algorithm has a better result than some other watermarking algorithms.
Jie Sang was born in China in 1992. He is currently studying for the master’s degree at department of computer science, Jiangnan University, China. His research interests include data mining, watermarking system, digital rights management and computer security.