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Dynamic Multi-mode Switching Error Concealment Algorithm for H.264/AVC Video Applications
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- Authors
- Xiaoming Chen, Yuk Ying Chung, Chang Seok Bae
- Issue Date
- 2008-02
- Citation
- IEEE Transactions on Consumer Electronics, v.54, no.1, pp.154-162
- ISSN
- 0098-3063
- Publisher
- IEEE
- Language
- English
- Type
- Journal Article
- Abstract
- 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 Keywords
- Edge features, H.264/AVC video, Multi-mode switching, Picture quality, Signal noise ratio(SNR), Temporal Correlation, Transmission error, Video communications, channel noise, compressed video, device applications