Adaptive Video Watermarking Algorithm with Lifting Scheme Wavelet and HVS
In this paper,an blind adaptive video watermarking algorithm based on lifting scheme wavelet and HVS is proposed.The algorithm first partitions the video stream into several shots,some of which are selected with a key to embed the watermarking.And both the frames of the selected shots and the grayscale watermarking are transformed into wavelet domain.The wavelet coefficients of the watermarking image are re-organized according to the wavelet tree structure and then ordered in terms of bit-plane significance to generate watermarking sequence.Secondly,the watermarking sequence is embedded band-to-band in the significant coefficients of video frames.During the embedding process,the HVS masking characteristics of texture area and motion area are considered to adaptively adjust the embedding strength which can enhance the watermarking robustness as much as possible without harming its invisibility.The simulation results prove that the propose algorithm is well robust to common attacks such as Gaussian noise,frame loss,frame average and MPEG-4 compression,etc.