Error Concealment Method considering Distance and Direction of Motion Vectors in H.264 


Vol. 34,  No. 1, pp. 37-47, Jan.  2009


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  Abstract

When H.264 encoded video streams are transmitted over wireless network, packet loss is unavoidable. Responding on this environment, we propose methods to recover missed motion vector in the decoder: At first, A candidate vector set for missing macroblock is estimated from high correlation coefficient of neighboring motion vectors and missing block vectors the algorithm clusters candidate vectors through distances amongst motion vectors of neighboring blocks. Then the optimal candidate vector is determined by the median value of the clustered motion vector set. In next stage, from the candidate vector set, the final candidate vector of missing block is determined it has minimum distortion value considering directions of neighboring pixels’ boundary. Test results showed that the proposed algorithm decreases the candidate motion vectors 23~61% and reduces 3~4sec on average processing(decoding) time comparing the existing H.264 codec. The PSNR, in terms of visual quality is similar to existing methods.

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  Cite this article

[IEEE Style]

N. Son and G. Lee, "Error Concealment Method considering Distance and Direction of Motion Vectors in H.264," The Journal of Korean Institute of Communications and Information Sciences, vol. 34, no. 1, pp. 37-47, 2009. DOI: .

[ACM Style]

Nam-rye Son and Guee-sang Lee. 2009. Error Concealment Method considering Distance and Direction of Motion Vectors in H.264. The Journal of Korean Institute of Communications and Information Sciences, 34, 1, (2009), 37-47. DOI: .

[KICS Style]

Nam-rye Son and Guee-sang Lee, "Error Concealment Method considering Distance and Direction of Motion Vectors in H.264," The Journal of Korean Institute of Communications and Information Sciences, vol. 34, no. 1, pp. 37-47, 1. 2009.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880