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A Spatial Error Concealment Technique with Low Complexity for Intra-frame in the H.264 Standard  

Kim Dong-Hyung (한양대학교 전자통신전파공학과 영상처리 및 신호처리 연구실)
Cho Sang-Hyup (한양대학교 전자통신전파공학과 영상처리 및 신호처리 연구실)
Jeong Je-Chang (한양대학교 전자전기컴퓨터 공학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.31, no.5C, 2006 , pp. 503-511 More about this Journal
Abstract
H.264 adopts new coding tools such as intra-prediction, loop filter, etc. The adoption of these tools enables an H.264-coded bitstream to have more information compared with previous standards. In this paper we proposed an effective spatial error concealment method for H.264. Among the information included in an H.264-coded bitstream, we use intra-mode for recovering a damaged block. This is because prediction direction in intra-mode is highly correlated to the edge direction of a lost macroblock. We first estimate the edge direction using intra-modes of blocks adjacent to a lost macroblock, and classify the area in a damaged macroblock into the edge and the flat area. And then our method recovers pixel values in the edge area using edge-directed interpolation, and recovers pixel values in the flat area using weighted interpolation. Simulation results show the proposed method yields better video quality than conventional approaches by 0.35 to 5.48 dB.
Keywords
spatial error concealment; intra-mode; prediction mode; estimation of edge direction;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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