Spatio-Temporal Correlation을 이용한 동영상 오류 은닉 알고리즘

Error Concealment Algorithm using Spatio-Temporal Correlation

  • 이우찬 (육군사관학교 전자정보학과) ;
  • 서동철 (육군사관학교 전자정보학과) ;
  • 김용철 (육군사관학교 전자정보학과)
  • Lee, Woo-Chan (Department of Electrical Engineering, Korea Military Academy) ;
  • Seo, Dong-Cheul (Department of Electrical Engineering, Korea Military Academy) ;
  • Kim, Yong-Chul (Department of Electrical Engineering, Korea Military Academy)
  • 발행 : 2006.07.12

초록

This paper proposes a spatio-temporal correlation algorithm that takes advantage of the spatial and temporal correlations in video streams for error concealment. The spatio-temporal correlation algorithm sets the neighborhood area of the damaged part as a reference window, then finds the area that best matches the reference window in the previous frame. The best-matched area in the previous frame replaces the damaged part in the current frame. The results of ten variations of the proposed algorithm are compared with conventional error concealment methods. These methods include the ones applicable to P-frames as well as I-frames. The comparison results show that the proposed algorithm is very efficient for l-frame error concealment with a large motion between frames.

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