Robust watermark embedding/detection algorithm for H.264 video

We present a blind watermark embedding/detection al- gorithm to embed watermarks into H.264's I pictures. The embed- ded watermark can survive H.264's compression attacks with more than a 40:1 compression ratio in I pictures. One pair of predicted discrete cosine transform (DCT) coefficients within the blocks of size 434 are used to embed 1-bit watermark information. The embed- ding locations of DCT coefficients are switched from lower sub- bands to higher subbands in a predefined order, while the distortions between predicted values and original values are larger than a tol- erable bound. With these methods, the embedded watermarks can survive H.264's compression attacks with good invisibility. © 2005

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