AVS2视频编码标准技术特色及应用

doi:10.11959/j.issn.1000-0801.2017245

Abstract

Abstract:

A brief introduction was given to the development history of AVS video coding standards.Then an overview of the key technologies adopted in AVS2 video coding standard (GB/T 33475.2-2016) was provided,including flexible prediction partition,multiple hypothesis prediction,optimized two-level transform,adaptive loop filter and background picture model based prediction coding for scene video.Compared to the AVS1,AVS2 can achieve more than 50% bits saving.And compared to HEVC/H.265,AVS2 can achieve significant coding efficiency improvement for scene video coding.Moreover,the applications of AVS standard in digital TV broadcasting was introduced briefly.

Key words: AVS, transform, prediction, entropy coding, loop filter

CLC Number:

TN919.81

Siwei MA,Falei LUO,Tiejun HUANG. Kernel technologies and applications of AVS2 video coding standard[J]. Telecommunications Science, 2017, 33(8): 1-15.

Figures/Tables 22

References 27

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技术完成时间	AVS／类	应用及主要技术特征
2003年12月	AVS1／基准	面向数字电视广播应用，采用基于8×8像素块的帧内预测，8×8像素块变换编码，去块效应滤波，变块大小运动补偿（8×8像素～16×16像素）
2008年6月	AVS1／伸展	面向监控视频应用，采用基于背景帧、核心帧的编码技术
2008年9月	AVS1／加强	面向数字电影应用，采用基于上下文的算术编码、加权量化等技术
2009年6月	AVS1移动	面向移动视频应用，采用了4×4像素帧内预测、8×8像素/4×4像素自适应变换等技术
2011年7月	AVS1监控	增强的监控视频编码，采用背景图像建模编码技术
2012年5月	AVS+／广播	面向高清数字电视广播，采用了基于上下文的算术编码、帧级加权量化、增强场预测编码等技术
2015年12月	AVS2／基准	面向超高清数字电视广播、场景视频等应用，采用了自适应预测划分、多假设预测、层次变换、自适应算术编码、自适应滤波等技术

配置序列	RA			LD			AI
配置序列	Y	U	V	Y	U	V	Y	U	V
UHD	-50.5%	-56.3%	-56.2%	-57.6%	-66.5%	-67.1%	-31.2%	-30.8%	-30.5%
1080P	-51.3%	-61.7%	-63.2%	-44.3%	-59.0%	-62.1%	-33.1%	-37.4%	-39.2%
WVGA	-52.8%	-58.1%	-58.6%	-50.5%	-58.1%	-59.9%	-30.4%	-28.2%	-29.8%
WQVGA	-52.4%	-58.9%	-59.0%	-49.4%	-59.2%	-58.7%	-26.6%	-24.8%	-26.9%
720P	-57.2%	-66.1%	-63.8%	-56.3%	-71.1%	-69.3%	-34.0%	-37.7%	-34.8%
平均	-52.9%	-60.5%	-60.5%	-51.0%	-62.1%	-62.8%	-31.2%	-32.4%	-33.0%
编码复杂度		1 210%			2 102%			1 228%

配置序列	RA			LD			AI
配置序列	Y	U	V	Y	U	V	Y	U	V
UHD	-0.3%	5.6%	6.3%	2.7%	4.8%	9.0%	-2.2%	2.1%	2.1%
1080P	-2.3%	5.6%	3.8%	0.7%	-2.4%	-1.6%	-0.7%	2.1%	1.2%
WVGA	0.0%	6.7%	7.7%	0.9%	2.2%	5.2%	1.5%	3.9%	3.8%
WQVGA	1.1%	7.7%	8.8%	4.9%	8.1%	9.8%	2.8%	4.5%	4.9%
720P	-2.4%	-7.3%	-5.5%	1.9%	-5.1%	0.3%	-2.1%	-5.3%	-4.2%
平均	-0.9%	4.1%	4.6%	2.1%	1.3%	4.1%	-0.1%	1.4%	1.4%
编码复杂度		315%			312%			327%

配置序列	RA			LD
配置序列	Y	U	V	Y	U	V
Crossroad_720×576_30	-39.2%	-37.3%	-37.7%	-25.6%	-64.6%	-60.4%
Office_720×576_30	-24.0%	-24.7%	-25.0%	-15.5%	-46.1%	-44.3%
Overbridge_720×576_30	-60.7%	-56.9%	-56.8%	-38.4%	-58.3%	-56.2%
Intersection_1 600×1 200_30	-18.7%	-29.0%	-28.4%	-23.2%	-33.7%	-29.6%
Mainroad_1 600×1 200_30	-52.7%	-65.2%	-58.6%	-53.8%	-58.9%	-54.3%
平均	-39.1%	-42.6%	-41.3%	-31.3%	-52.3%	-49.0%
编码复杂度		334%			332%

项目序列	配置	超快速（配置0）	比较快速（配置3）	中速（配置5）	慢速（配置7）	平和（配置9）
BasketballDrive 1 920 dpi×1 080 dpi,50帧/s	Y BD-Rate	11.36%	-12.55%	-18.98%	-4.29%	-11.15%
	加速比(x265)	14.02	7.02	4.10	0.64	0.10
	加速比(CAVS2)	8.75	3.80	1.32	0.75	0.12
BQTerrace 1 920 dpi×1 080 dpi,60帧/s	Y BD-Rate	-26.95%	-4.19%	-10.93%	-3.67%	-3.59%
	加速比(x265)	19.46	11.65	5.68	0.96	0.12
	加速比(CAVS 2)	10.00	5.83	2.03	0.99	0.11
Cactus 1 920 dpi×1 080 dpi,50帧/s	Y BD-Rate	-7.25%	-15.63%	-19.48%	-9.06%	-14.10%
	加速比(x265)	16.23	8.06	4.95	0.75	0.11
	加速比(CAVS2)	10.28	4.37	1.56	0.83	0.12
Kimino 1 920 dpi×1 080 dpi,24帧/s	Y BD-Rate	11.48%	-6.57%	-14.27%	-6.63%	-9.06%
	加速比(x265)	13.78	6.41	3.91	0.79	0.12
	加速比(CAVS2)	10.44	4.94	1.77	0.94	0.14
ParkScene 1 920 dpi×1 080 dpi,24帧/s	Y BD-Rate	-6.87%	-8.63%	-11.55%	-5.33%	-6.25%
	加速比(x265)	16.09	7.91	4.71	0.84	0.12
	加速比(CAVS2)	9.54	4.65	1.73	0.92	0.12
平均	Y BD-Rate	-3.65%	-9.51%	-15.04%	-5.80%	-8.83%
	加速比(x265)	15.92	8.21	4.67	0.80	0.11
	加速比(CAVS2)	9.80	4.72	1.68	0.89	0.12

Kernel technologies and applications of AVS2 video coding standard

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项目序列	配置	超快速（配置0）	比较快速（配置3）	中速（配置5）	慢速（配置7）	平和（配置9）
BasketballDrive 1 920 dpi×1 080 dpi,50帧/s	Y BD-Rate	3.30%	2.19%	-3.54%	-0.33%	-4.99%
	加速比(x265)	12.99	7.18	4.25	0.63	0.10
	加速比(CAVS2)	8.30	3.15	0.81	0.40	0.07
BQTerrace 1 920 dpi×1 080 dpi,60帧/s	Y BD-Rate	-60.50%	-20.96%	-24.22%	-25.57%	-20.77%
	加速比(x265)	16.64	11.02	6.00	0.86	0.11
	加速比(CAVS2)	7.79	4.43	1.43	0.58	0.08
Cactus 1 920 dpi×1 080 dpi,50帧/s	Y BD-Rate	-12.32%	-6.44%	-11.32%	-8.51%	-11.65%
	加速比(x265)	14.74	8.51	5.26	0.71	0.11
	加速比(CAVS2)	8.91	3.50	0.96	0.45	0.07
Kimino 1 920 dpi×1 080 dpi,24帧/s	Y BD-Rate	9.59%	7.33%	-0.37%	1.37%	-2.17%
	加速比(x265)	13.00	7.09	4.29	0.74	0.11
	加速比(CAVS2)	9.83	3.92	1.02	0.48	0.08
ParkScene 1 920 dpi×1 080 dpi,24帧/s	Y BD-Rate	-22.77%	-5.63%	-12.70%	-10.51%	-9.91%
	加速比(x265)	14.55	8.47	5.03	0.76	0.11
	加速比(CAVS2)	8.19	3.78	1.03	0.48	0.07
平均	Y BD-Rate	-16.54%	-4.70%	-10.43%	-8.71%	-9.90%
	加速比(x265)	14.38	8.45	4.97	0.74	0.11
	加速比(CAVS2)	8.60	3.76	1.05	0.48	0.07

项目序列	配置	超快速（配置0）	比较快速（配置3）	中速（配置5）	慢速（配置7）	平和（配置9）
BasketballDrive 1 920 dpi×1 080 dpi,50帧/s	Y BD-Rate (LD)	108.10%	49.68%	28.79%	17.64%	8.43%
	Y BD-Rate (RA)	100.70%	44.37%	20.36%	15.02%	3.12%
	Y BD-Rate (LD)	186.08%	86.19%	49.47%	28.78%	25.33%
BQTerrace 1 920 dpi×1 080 dpi,60帧/s	Y BD-Rate (RA)	128.49%	54.41%	27.43%	17.67%	12.66%
	Y BD-Rate (LD)	97.37%	45.54%	23.76%	14.39%	5.34%
	Y BD-Rate (RA)	80.08%	35.74%	15.01%	11.11%	1.67%
Cactus 1 920 dpi×1 080 dpi,50帧/s	Y BD-Rate (LD)	69.76%	38.31%	22.02%	14.18%	7.73%
	Y BD-Rate (RA)	65.26%	33.91%	13.81%	9.80%	3.92%
	Y BD-Rate (LD)	78.56%	40.13%	21.97%	12.79%	8.19%
Kimino 1 920 dpi×1 080 dpi,24帧/s	Y BD-Rate (RA)	63.03%	30.37%	13.93%	9.40%	5.21%
	Y BD-Rate (LD)	107.97%	51.97%	29.20%	17.55%	11.00%
	Y BD-Rate (RA)	87.51%	39.76%	18.11%	12.60%	5.31%