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- W1569967989 abstract "We propose an informed watermarking algorithm that aids in concealing packet loss errors in video communications. This watermark-based error concealment (WEC) method embeds a low resolution version of the video frame inside itself as watermark data. At the receiver, the extracted watermark is used as a reference for error concealment. The proposed DCT-based algorithm employs informed watermarking techniques to minimize the distortion of host frames. At the encoder, a predictive feedback loop is employed which helps to adjust the strength of the data embedding. Furthermore, the distortion of the DCT coefficients introduced in the embedding can be removed to a considerable extent, by employing bit-sign adaptivity. Simulation results on standard video sequences show that the proposed informed WEC scheme has an advantage of 3~4 dB in PSNR over non-informed WEC." @default.
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- W1569967989 date "2006-01-01" @default.
- W1569967989 modified "2023-09-24" @default.
- W1569967989 title "Error Concealment in Video Communications by Informed Watermarking" @default.
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- W1569967989 doi "https://doi.org/10.1007/11949534_110" @default.
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