A low-complexity HEVC intra prediction algorithm based on level and mode filtering

Heming Sun*, Dajiang Zhou, Satoshi Goto

*この研究の対応する著者

研究成果: Conference article査読

52 被引用数 (Scopus)

抄録

HEVC achieves a better coding efficiency relative to prior standards, but also involves increased complexity. For intra prediction, complexity is especially intensive due to a highly flexible coding unit structure and a large number of prediction modes. This paper presents a low-complexity intra prediction algorithm for HEVC. A fast preprocessing stage based on a simplified cost model is proposed. Based on its results, a level filtering scheme reduces the number of prediction unit levels that requires fine processing from 5 to 2. To supply level filtering decision with appropriate thresholds, a fast training method is also designed. A mode filtering scheme further reduces the maximum number of angular modes to be evaluated from 34 to 9. Complexity reduction from HM 3.0 is over 50% and stable for various sequences, which makes the proposed algorithm suitable for real-time applications. The corresponding bit rate increase is lower than 2.5%.

本文言語English
論文番号6298238
ページ(範囲)1085-1090
ページ数6
ジャーナルProceedings - IEEE International Conference on Multimedia and Expo
DOI
出版ステータスPublished - 2012 11月 5
イベント2012 13th IEEE International Conference on Multimedia and Expo, ICME 2012 - Melbourne, VIC, Australia
継続期間: 2012 7月 92012 7月 13

ASJC Scopus subject areas

  • コンピュータ ネットワークおよび通信
  • コンピュータ サイエンスの応用

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