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An Efficient Multi-directional Interpolation Algorithm For Spatial Error Concealment


Affiliations
1 Institute of Information Technology, Hightech Research and Development Center, Kim Il Sung University, Pyongyang, Korea, Democratic People's Republic of
     

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In real-time video applications, error concealment is used to conceal the corrupted parts of the video sequence without retransmission. In this paper, an efficient multi-directional interpolation algorithm is presented for spatial error concealment. First, the significant edges of missing macroblock are only estimated using a directional edge analysis on the correctly received neighboring blocks. Second, an approximation for each missing pixel is computed along each significant edge. For two boundary pixels along each significant edge direction, the sum of magnitudes of gradients, which has the same quantized direction level as the edge direction, are computed on seven neighboring pixels. Finally, a weighted average of multiple approximations is computed using the sum of gradient magnitudes as weighting factors. Compared with the previous methods using multi-directional interpolation, experimental results show that the proposed method gives better reconstruction quality in terms of objective and subjective evaluations.

Keywords

Video Communication, Error Concealment, Multi-Directional Interpolation.
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  • Ye-KuiWang, M.M. Hannuksela and V. Varsa, “The Error Concealment Feature in the H.26L Test Model”, Proceedings of IEEE International Conference on Image Processing, pp.729-732, 2002.
  • Shih Chang Hsia, “An Edge-Oriented Spatial Interpolation for Consecutive Block Error Concealment”, IEEE Signal Processing Letters, Vol.11, No. 6, pp.577-580, 2004.
  • Dimitris Agrafiotis, David R. Bull and Nishan Canagarajah, “Spatial Error Concealment with Edge Related Perceptual Considerations”, Signal Processing: Image Communication, Vol. 21, No. 2, pp. 130-142, 2006.
  • X. Chen, Y. Chung and C. Bae, “Dynamic Multi-Mode Switching Error Concealment Algorithm for H.264/AVC Video Applications”, IEEE Transactions on Consumer Electronics, Vol. 54, No. 1, pp. 154-162, 2008.
  • M. Ma, O. C. Au and S.H.G. Chan, “Edge-Directed Error Concealment”, IEEE Transactions on Circuits and Systems for Video Technology, Vol. 20, No. 3, pp. 382-395, 2010.
  • Xu Yanling and Zhou Yuanhua, “H.264 Video Communication Based Refined Error Concealment Schemes”, IEEE Transactions on Consumer Electronics, Vol. 50, No. 4, pp. 1135-1141, 2004.
  • Chengxing Li, “An Adaptive Error Concealment Algorithm Based on Partition Model”, Proceedings of Chinese Conference on Image and Graphics Technologies, pp. 35-43, 2016.
  • Olivia Nemethova, Ameen Al-Moghrabi and Markus Rupp, “Flexible Error Concealment for H.264 Based on Directional Interpolation”, Proceedings of International Conference on Wireless Networks, Communications and Mobile Computing, pp. 13-16, 2005.
  • Hadi Asheri, Hamid R. Rabiee, Nima Pourdamghani and Mohammad Ghanbari, “Multi-Directional Spatial Error Concealment using Adaptive Edge Thresholding”, IEEE Transactions on Consumer Electronics, Vol. 58, No. 3, pp. 880-885, 2012.

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  • An Efficient Multi-directional Interpolation Algorithm For Spatial Error Concealment

Abstract Views: 286  |  PDF Views: 1

Authors

Jo Jong Hyon
Institute of Information Technology, Hightech Research and Development Center, Kim Il Sung University, Pyongyang, Korea, Democratic People's Republic of
Hwang Pyong Su
Institute of Information Technology, Hightech Research and Development Center, Kim Il Sung University, Pyongyang, Korea, Democratic People's Republic of
Ri Je Hyon
Institute of Information Technology, Hightech Research and Development Center, Kim Il Sung University, Pyongyang, Korea, Democratic People's Republic of

Abstract


In real-time video applications, error concealment is used to conceal the corrupted parts of the video sequence without retransmission. In this paper, an efficient multi-directional interpolation algorithm is presented for spatial error concealment. First, the significant edges of missing macroblock are only estimated using a directional edge analysis on the correctly received neighboring blocks. Second, an approximation for each missing pixel is computed along each significant edge. For two boundary pixels along each significant edge direction, the sum of magnitudes of gradients, which has the same quantized direction level as the edge direction, are computed on seven neighboring pixels. Finally, a weighted average of multiple approximations is computed using the sum of gradient magnitudes as weighting factors. Compared with the previous methods using multi-directional interpolation, experimental results show that the proposed method gives better reconstruction quality in terms of objective and subjective evaluations.

Keywords


Video Communication, Error Concealment, Multi-Directional Interpolation.

References