Video Signal Watermarking Using the 3-D Wavelet Transform

In this paper, the 3D wavelet transform has been applied for video signal watermarking. The proposed method uses the "I frames" of the MPEG to create cubic of picture. Then a 2D wavelet in the patial domain and a 1-D wavelet transform in the time domain, the desired sub-bands are extracted. For watermarking we have applied two methods. The first uses the "spread spectrum" and define a random sequence for the key and the second is " embedding a logo". In the proposed method the hidden signature added on the color dimension "YCrCb" and placed on the "Y" and "Cr" components. For extracting the hidden signature, in the first method we should have the original signal but in the second method we do not need the original signal. The experimental results indicate the robustness of the proposed method against the compression and attacks like rescale and cutter.