A Blind Video Watermarking Algorithm Based on 3D Wavelet Transform

A blind video watermarking algorithm based on 3D wavelet transform is proposed in this paper. The original video frames are divided into 3D-blocks. According to HVS properties, the motive block with complex texture is selected to embed the watermark. The CDMA encoded watermark is embedded into the wavelet coefficients of the selected sub-block. Blind recovery of the embedded data is achieved using the auto-correlation of the orthogonal codes. Experimental results show the watermarked frames are indistinguishable from the original frames subjectively and the proposed video watermarking algorithm is robust against the attacks of additive Gaussian noise, frame dropping, frame averaging and lossy compression.