Error concealment using intra-mode information included in H.264/AVC-coded bitstreamopen access
- Authors
- Kim, Donghyung; Jeong, Seyoon; Choi, Jin Soo; Jeon, Gwanggil; Kim, Seungjong; Jeong, Jechang
- Issue Date
- Aug-2008
- Publisher
- WILEY
- Keywords
- H.264/AVC video coding; spatial error concealment; adaptive interpolation; intra-prediction mode
- Citation
- ETRI JOURNAL, v.30, no.4, pp.506 - 515
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- ETRI JOURNAL
- Volume
- 30
- Number
- 4
- Start Page
- 506
- End Page
- 515
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/171917
- DOI
- 10.4218/etrij.08.0108.0196
- ISSN
- 1225-6463
- Abstract
- The H.264/AVC standard has adopted new coding tools such as intra-prediction, variable block size, motion estimation with quarter-pixel-accuracy, loop filter, and so on. The adoption of these toots enables an H.264/AVC-coded bitstream to have more information than was possible with previous standards. In this paper, we propose an effective spatial error concealment method with low complexity in H.264/AVC intra-frame. From information included in an H.264/AVC-coded bitstream, we use prediction modes of intra-blocks to recover a damaged block. This is because the prediction direction in each prediction mode is highly correlated to the edge direction. We first estimate the edge direction of a damaged block using the prediction modes of the intra-blocks adjacent to a damaged block and classify the area inside the damaged block into edge and flat areas. Our method then recovers pixel values in the edge area using edge-directed interpolation, and recovers pixel values in the flat area using weighted interpolation. Simulation results show that the proposed method yields better video quality than conventional approaches.
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