Multi-frame error concealment for H.264/AVC frames with complexity adaptation

Chen, Chun; Liu, Yi; Zhi, Yang; Bu, Jiajun; Deng, Xiaoyu

doi:10.1109/tce.2008.4637636

Cited by 11 publications

(1 citation statement)

References 13 publications

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“…However, the quality of recovered blocks is much higher than that from spatial EC. Two temporal EC are presented in Chen et al (2008) and Hwang et al (2008) where boundary matching scheme or estimated motion vector were involved. As for the hybrid EC, it combines spatial EC and temporal EC.…”

Section: Introductionmentioning

confidence: 99%

Grey temporal error concealment

Hsieh

Liu²,

Hsiung³

et al. 2011

Grey Systems: Theory & Appl

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PurposeThe purpose of this paper is to solve the pack loss problem of video transmitted over error‐prone channels. Pack loss generally affects the visual quality of reconstructed frames significantly. Consequently, a grey approach to error concealment (EC) is proposed.Design/methodology/approachNote that missing information in error blocks can be found before and after the error frame. Thus, two adjacent error‐free frames are utilized to conceal error blocks caused by packet loss. This paper presents an EC approach based on grey polynomial interpolation (GPI) which is called the GTEC. In the GTEC, the following stages are involved. First, error blocks due to packed loss are detected. Then, optimal reference blocks in adjacent frames are found through boundary matching algorithm (BMA). Finally, estimated blocks are obtained by the GPI. By replacing error blocks with the estimated blocks, EC is completed in the GTEC.FindingsIn the simulation, the proposed GTEC is compared with the EC scheme in H.264 and the BMA. With packet loss rates of 1, 3, 5, and 10 per cent, the proposed GTEC approach has better performance than EC schemes in H.264 and BMA, both in peak signal‐to‐noise ratio and visual quality. Consequently, it provides an alternative where EC is required.Originality/valueThe value of GTEC proposed in this paper is not only in better performance but also in the originality to apply grey scheme, i.e. GPI, in the field of EC.

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Section: Introductionmentioning

confidence: 99%