Video Watermarking in the DT-CWT Domain Using Hyperbolic Function

In this paper, a blind video watermarking method is presented. Chrominance channel of the selected frames is decomposed into even and odd shares of video frames. For embedding, odd share is selected, then two dimensional Dual Tree Complex Wavelet Transform (DT-CWT) is applied on it. We generate pseudorandom binary sequence and define two hyperbolic functions. Then by using multiplicative-based watermarking method, watermarked signal is produced. After using the inverse two dimensional DT-CWT of the watermarked odd share, two shares are combined into one frame. Finally, watermarked chrominance channel is concatenated with luminance channel and the other chrominance channel. Experimental results show the proposed method outperforms some similar methods, after detection and extraction the watermark, we see that our scheme is imperceptible and robust to Additive White Gaussian Noise (AWGN) as well as geometric attacks.