HEVC encoder optimization for CPU-GPU platform

CORC > 北京大学 > 信息科学技术学院

	HEVC encoder optimization for CPU-GPU platform
	Luo, Fa-Lei ; Wang, Shan-She ; Ma, Jun-Cheng ; Ma, Si-Wei ; Gao, Wen
刊名	Ruan Jian Xue Bao/Journal of Software
	2015
英文摘要	This paper provides a comprehensive optimization strategy aiming at reducing the complexity of high efficiency video coding (HEVC) encoder with CPU-GPU cooperation. Based on the computational complexity distribution of HEVC encoder and characteristics of different modules and coding tools, intra coding, inter coding and in-loop filtering are collaboratively optimized. For intra coding, based on the correlation between neighboring coding units (CUs), depth range of CU is predicted and the number of candidates in intra mode candidate set for RDO (rate distortion optimization) is cut down, to avoid unnecessary computations. For inter coding, the most time consuming module, motion estimation (ME), is implemented with the collaboration of CPU and GPU in pipeline. Based on the energy of prediction residuals, an early termination scheme of CU splitting is proposed in this paper. For in-loop filtering, GPU based sample adaptive offset (SAO) parameter decision scheme and GPU based deblocking scheme are proposed to further reduce the coding complexity on CPU. The overall optimization scheme is implemented on the HM 16.2 platform, and experiments demonstrate that the proposed optimization scheme can reduce over 68% of the coding complexity of HEVC encoder, with only 0.5% performance loss in average. ? Copyright 2015, Institute of Software, the Chinese Academy of Sciences. All rights reserved.; EI; 中文核心期刊要目总览(PKU); 中国科技核心期刊(ISTIC); 239-246; 26
语种	中文
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/435715]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Luo, Fa-Lei,Wang, Shan-She,Ma, Jun-Cheng,et al. HEVC encoder optimization for CPU-GPU platform[J]. Ruan Jian Xue Bao/Journal of Software,2015.
APA	Luo, Fa-Lei,Wang, Shan-She,Ma, Jun-Cheng,Ma, Si-Wei,&Gao, Wen.(2015).HEVC encoder optimization for CPU-GPU platform.Ruan Jian Xue Bao/Journal of Software.
MLA	Luo, Fa-Lei,et al."HEVC encoder optimization for CPU-GPU platform".Ruan Jian Xue Bao/Journal of Software (2015).