Proceedings Article10.1109/APSIPA.2013.6694353
Fast coding unit decision algorithm for HEVC
Wei-Jhe Hsu,Hsueh-Ming Hang +1 more
- 01 Dec 2013
- pp 1-5
TL;DR: A fast algorithm, which consists of splitting decision and termination decision, in constructing the CU quadtree structure is proposed, which averagely saves about 43% encoding time and the BD rate increases by about 2.2% for the HD test sequences.
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Abstract: HEVC adopts a flexible Coding Unit (CU) quadtree structure. With more flexible CU size selection, the coding efficiency of HEVC increases significantly but its complexity is much higher than that of H.264/MPEG-4 AVC. To reduce computational complexity, we propose a fast algorithm, which consists of splitting decision and termination decision, in constructing the CU quadtree. This scheme is designed to be complementary to the current three fast tools included in HEVC TM5.0. In other words, when it is combined with the existing fast CU tools, it still provides additional time savings. The time reduction of our scheme is most noticeable on HD pictures. In comparison with the original HM5.0, our proposed method averagely saves about 43% encoding time and the BD rate increases by about 2.2% for the HD test sequences.
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References
Complexity control of high efficiency video encoders for power-constrained devices
TL;DR: A novel complexity control method for the near future HEVC encoders running on power-constrained devices based on a decision algorithm that dynamically adjusts the depth of the Coding Units (CU) defined by quad-tree structures.
119
Content Based Hierarchical Fast Coding Unit Decision Algorithm for HEVC
Jie Leng,Lei Sun,Takeshi Ikenaga,Shinichi Sakaida +3 more
- 14 May 2011
TL;DR: A fast coding unit decision algorithm in either frame level or coding unit level to accelerate encoding procedure and shows averagely 45% total encoding time reduction and negligible drop of rate distortion performance.