Watermarking-based Error Concealment in Video Communications 


Vol. 31,  No. 7, pp. 700-705, Jul.  2006


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  Abstract

In this paper, an informed watermarking algorithm is proposed 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 in order 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 ㏈ in PSNR over non-informed WEC and that even a non-informed WEC is still superior to conventional error concealment techniques.

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  Cite this article

[IEEE Style]

T. Oh, Y. Kim, C. Adsumilli, S. Mitra, "Watermarking-based Error Concealment in Video Communications," The Journal of Korean Institute of Communications and Information Sciences, vol. 31, no. 7, pp. 700-705, 2006. DOI: .

[ACM Style]

Taesuk Oh, Yongcheol Kim, Chowdary Adsumilli, and Sanjit Mitra. 2006. Watermarking-based Error Concealment in Video Communications. The Journal of Korean Institute of Communications and Information Sciences, 31, 7, (2006), 700-705. DOI: .

[KICS Style]

Taesuk Oh, Yongcheol Kim, Chowdary Adsumilli, Sanjit Mitra, "Watermarking-based Error Concealment in Video Communications," The Journal of Korean Institute of Communications and Information Sciences, vol. 31, no. 7, pp. 700-705, 7. 2006.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880