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학술지 Dynamic Multi-mode Switching Error Concealment Algorithm for H.264/AVC Video Applications View Document
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저자
Xiaoming Chen, Yuk Ying Chung, 배창석
발행일
200802
출처
IEEE Transactions on Consumer Electronics, v.54 no.1, pp.154-162
ISSN
0098-3063
출판사
IEEE
DOI
https://dx.doi.org/10.1109/TCE.2008.4470038
협약과제
07MH2100, 퍼스널 Life Log기반 지능형 서비스 기술 개발, 배창석
초록
In video communication based consumer device applications, the compressed video is extremely fragile to transmission errors due to channel noise. Error Concealment (EC) is an efficient way to recover a damaged video sequence. The existing EC algorithms for compressed video typically apply uniform EC mode to entire video sequence regardless of frame features, or lack in sensible mode-switching considerations. This paper proposes a new Dynamic Multimode Switching (DMS) EC algorithm. The proposed algorithm provides several EC modes for intra- and interframes. The proposed smart decoder is able to adaptively apply these modes in different situations. The mode switching in DMS depends on the spatial/ temporal correlation, estimated edge features of the corrupted Macroblock (MB), the smoothness of the reconstructed MB and etc. The proposed DMS algorithm has been evaluated and compared with 3 classical EC algorithms. The experimental results show that the DMS algorithm can achieve significant gains in Peak Signal Noise Ratio (PSNR) and therefore improves the decoded picture quality in video applications. © 2008 IEEE.
KSP 제안 키워드
Edge features, H.264/AVC video, Multi-mode switching, Picture quality, Signal noise ratio(SNR), Temporal Correlation, Transmission error, channel noise, compressed video, device applications, error concealment