Advanced error concealment for 1Seg video communication considering error propagation inside a frame

Jun Wang*, Satoshi Goto

*この研究の対応する著者

研究成果: Article査読

抄録

Transmission of compressed video over error-prone channels may result in packet losses or errors, which can significantly degrade the image quality. Such degradation becomes even worse in 1Seg video broadcasting, which is widely used in Japan and Brazil for mobile phone TV services recently, where errors are drastically increased and the lost areas are contiguous. Therefore, the errors in the earlier concealed MBs (macro blocks) may propagate to the MBs later to be concealed inside the same frame (spatial domain). The error concealment (EC) is used to recover the lost data by the redundancy in videos. Aiming at spatial error propagation (SEP) reduction, this paper proposes an SEP-reduction-based EC (SEPEC). In SEPEC, besides the mismatch distortion in the current MB, the potential propagated mismatch distortion in the following to be concealed MBs is also minimized. Also, two extensions of SEPEC, i.e. SEPEC with refined search and SEPEC with multiple layer match, are discussed. Compared with previous work, the experiments show SEPEC achieves much better performance of video recovery and excellent trade-off between quality and computation in 1Seg broadcasting.

本文言語English
ページ(範囲)268-273
ページ数6
ジャーナルIEEJ Transactions on Electrical and Electronic Engineering
7
3
DOI
出版ステータスPublished - 2012 5

ASJC Scopus subject areas

  • 電子工学および電気工学

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