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ETRI journal v.27 no.1, 2005년, pp.53 - 63  

High-Performance Spatial and Temporal Error-Concealment Algorithms for Block-Based Video Coding Techniques

Hsu, Ching-Ting    (Department of Electrical Engineering, National Dong Hwa University   ); Chen, Mei-Juan    (Department of Electrical Engineering, National Dong Hwa University   ); Liao, Wen-Wei    (Department of Electrical Engineering, National Dong Hwa University   ); Lo, Shen-Yi    (Department of Electrical Engineering, National Dong Hwa University  );
  • 초록

    A compressed video bitstream is sensitive to errors that may severely degrade the reconstructed images even when the bit error rate is small. One approach to combat the impact of such errors is the use of error concealment at the decoder without increasing the bit rate or changing the encoder. For spatial-error concealment, we propose a method featuring edge continuity and texture preservation as well as low computation to reconstruct more visually acceptable images. Aiming at temporal error concealment, we propose a two-step algorithm based on block matching principles in which the assumption of smooth and uniform motion for some adjacent blocks is adopted. As simulation results show, the proposed spatial and temporal methods provide better reconstruction quality for damaged images than other methods.


  • 주제어

    Error concealment .   video decoder .   H.   263.  

  • 참고문헌 (18)

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