Blind Video Watermarking Algorithm Based on Key Frames and Wavelet
Shuxin Yang · Video Engineering · 2013
A blind video watermarking algorithm based on key frames and 3D wavelet is proposed in this paper in order to improve the ability of the watermark to resist geometric attacks.The key frames are selected based on Euclid distance of Video frame difference,the key frames are segmented to blocks,and the key blocks are selected based on the video characteristics such as luminance sensitivity and texture sensitivity.Then,the key blocks are reconstructed to three dimension blocks and the scrambled watermark is adaptively embedded into the low frequency domain of the three dimension wavelet decomposed coefficients of the blocks.The watermark is retrieved blindly based on JND.Results demonstrate that the algorithm improves the watermark embedding capacity,and obtain a good imperceptible and robustness to video attacks.