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	Effective Quadtree Plus Binary Tree Block Partition Decision for Future Video Coding
	Wang, Zhao ; Wang, Shiqi ; Zhang, Jian ; Wang, Shanshe ; Ma, Siwei
	2017
关键词	MODE DECISION
英文摘要	Block partition structure has been recognized as a crucial module in video coding scheme. Recently, a quadtree plus binary tree (QTBT) block partition structure has been proposed in the Joint Video Exploration Team (JVET) development. Compared to the quadtree structure in HEVC, QTBT can achieve better coding performance with hugely increased encoding complexity. Here, we propose an effective QTBT partition decision algorithm to achieve a good trade-off between computational complexity and coding performance. In particular, at the Coding Tree Unit level, the partition parameters of QTBT are dynamically derived to adapt to the local characteristics without transmitting any overhead. Subsequently, at the Coding Unit level, a joint-classifier decision tree structure is designed to eliminate unnecessary iterations and meanwhile control the risk of false prediction. Experimental results show that the proposed algorithm can achieve 64% encoding time reduction on average with only 1.26% increase in terms of bit rate. This greatly benefits the practical implementations of QTBT in real application scenarios.; National Natural Science Foundation of China [61632001, 61571017, 61322106]; National Basic Research Program of China (973 Program) [2015CB351800]; CPCI-S(ISTP); 23-32
语种	英语
出处	Data Compression Conference (DCC)
DOI标识	10.1109/DCC.2017.70
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/469872]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Wang, Zhao,Wang, Shiqi,Zhang, Jian,et al. Effective Quadtree Plus Binary Tree Block Partition Decision for Future Video Coding. 2017-01-01.

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