Proceedings of the Korean Society of Broadcast Engineers Conference (한국방송∙미디어공학회:학술대회논문집)
- 2018.06a
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- Pages.175-177
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- 2018
A Context-based Fast Encoding Quad Tree Plus Binary Tree (QTBT) Block Structure Partition
- Marzuki, Ismail (Kwangwoon University) ;
- Choi, Hansol (Kwangwoon University) ;
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Sim, Donggyu
(Kwangwoon University)
- Published : 2018.06.20
Abstract
This paper proposes an algorithm to speed up block structure partition of quad tree plus binary tree (QTBT) in Joint Exploration Test Model (JEM) encoder. The proposed fast encoding of QTBT block partition employs three spatially neighbor coded blocks, such as left, top-left, and top of current block, to early terminate QTBT block structure pruning. The propose algorithm is organized based on statistical similarity of those spatially neighboring blocks, such as block depths and coded block types, which are coded with overlapped block motion compensation (OBMC) and adaptive multi transform (AMT). The experimental results demonstrate about 30% encoding time reduction with 1.3% BD-rate loss on average compared to the anchor JEM-7.1 software under random access configuration.
Keywords