대한전자공학회:학술대회논문집 (Proceedings of the IEEK Conference)
- 대한전자공학회 2004년도 학술대회지
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- Pages.819-822
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- 2004
A Temporal Error Concealment Technique Using Motion Adaptive Boundary Matching Algorithm
- Kim Won Ki (Division of Electrical and Computer Engineering, Hanyang University) ;
- Jeong Je Chang (Division of Electrical and Computer Engineering, Hanyang University)
- 발행 : 2004.08.01
초록
To transmit MPEG-2 video on an erroneous channel, a number of error control techniques He needed. Especially, error concealment techniques which can be implemented on receivers independent of transmitters are essential to obtain good video quality. In this paper, a motion adaptive boundary matching algorithm (MA-BMA) is presented for temporal error concealment. Before carrying out BMA, we perform error concealmmt by a motion vector prediction using neighboring motion vectors. If the candidate of error concealment is rot satisfied, search range and reliable boundary pixels are selected by the motion activity or motion vectors ane a damaged macroblock is concealed by applying the MA-BMA. This error concealment technique reduces the complexity and maintains PSNR gain of 0.3 0.7dB compared to the conventional BMA.