A mode-mapping and optimized MV conjunction based MGS-scalable SVC to AVC IPPP transcoder

Lei Sun, Zhenyu Liu, Takeshi Ikenaga

研究成果: Conference contribution

2 被引用数 (Scopus)

抄録

Scalable Video Coding (SVC) is an extension of H.264/AVC, aiming to provide the ability to adapt to heterogeneous environments. It offers great flexibility for bitstream adaptation in multi-point applications such as videoconferencing. However, transcoding between SVC and AVC is necessary due to the existence of legacy AVC-based systems. This paper proposes a 3-stage fast SVC-to-AVC transcoder for medium-grain quality scalability (MGS). Hierarchical-P structured SVC bitstream is transcoded into IPPP structured AVC bitstream with multiple reference frames. In the first stage, mode decision is accelerated by proposed SVC-to-AVC mode mapping scheme. In the second stage, INTER motion estimation is accelerated by an optimized motion vector (MV) conjunction method to predict the MV with a reduced search range. In the last stage, Hadamard-based all zero block (AZB) detection is utilized for early termination. Simulation results show that proposed transcoder achieves very similar coding efficiency as the optimal result, but with averagely 92.3% computational time saving.

本文言語English
ホスト出版物のタイトル2013 IEEE International Symposium on Circuits and Systems, ISCAS 2013
ページ1648-1651
ページ数4
DOI
出版ステータスPublished - 2013 9 9
イベント2013 IEEE International Symposium on Circuits and Systems, ISCAS 2013 - Beijing, China
継続期間: 2013 5 192013 5 23

出版物シリーズ

名前Proceedings - IEEE International Symposium on Circuits and Systems
ISSN(印刷版)0271-4310

Conference

Conference2013 IEEE International Symposium on Circuits and Systems, ISCAS 2013
国/地域China
CityBeijing
Period13/5/1913/5/23

ASJC Scopus subject areas

  • 電子工学および電気工学

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