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	An adaptive inter CU depth decision algorithm for HEVC
	Liu, Jie ; Jia, Huizhu ; Xiang, Guoqing ; Huang, Xiaofeng ; Cai, Binbin ; Zhu, Chuang ; Xie, Don
	2015
英文摘要	The emerging High-Efficiency Video Coding (HEVC) standard has introduced a number of new coding tools, such as a quad-tree based coding unit (CU). The quadtree-structured coding unit achieves significant coding efficiency improvements compared to H264/AVC. However, the complexity of CU depth decision associated with Rate-Distortion (R-D) cost computation dramatically increased. In order to alleviate the computational burden in HEVC inter coding, a fast CU depth decision algorithm is proposed in this paper. Firstly, zero CU detection method for HEVC is proposed as early termination algorithm. Secondly, the CU depth pruning strategies are adaptively determined according to standard deviation of statistic spatiotemporal depth information. Finally, when the neighbors are not available or have a very weak correlation, edge gradient of current coding tree unit (CTU) is considered as main factor for CU depth pruning method. Experimental results demonstrate that, compared with the original HM16.0 implementation, the proposed algorithm achieves about 40.5% encoding time saving with ignorable coding performance degradation. ? 2015 IEEE.; EI
语种	英语
出处	Visual Communications and Image Processing, VCIP 2015
DOI标识	10.1109/VCIP.2015.7457873
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/449486]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Liu, Jie,Jia, Huizhu,Xiang, Guoqing,et al. An adaptive inter CU depth decision algorithm for HEVC. 2015-01-01.

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