考虑视频内容的H.265/HEVC帧层码率分配算法

doi:10.11959/j.issn.1000-436x.2015239

Abstract

Abstract:

In order to guarantee the consistency between the coded bits and target bits,a frame-level bitrate allocation al-gorithm considering the content feature was proposed for H.265/HEVC codec.The main factors to affect the output bi-trate were first discussed by the analysis of rate-distortion theory.According to the video coding principle,the related pa-rameter was then predicted to reflect the content complexity.Finally,an efficient frame-level bitrate allocation algorithm was constructed.Experimental results show that the target bits and coded bits keep a better consistency,and the recon-struction video quality is improved by 0.103 dB in average.

Key words: bitrate allocation, content feature, rate control, H.265/HEVC

Wei LI,Fu-zheng YANG,Peng REN. H.265/HEVC frame-level bitrate allocation algorithm considering video content[J]. Journal on Communications, 2015, 36(9): 76-81.

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References 8

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序列	H.265/HEVC 帧层码率分配算法的R_e	本文所提的帧层码率分配算法R_e
BasketballPass	0.598	0.150
BlowingBubbles	0.185	0.041
BasketballDrill	0.183	0.086
BQmall	0.318	0.193
Fourpeople	0.468	0.139
Johnny	0.106	0.060
ParkScene	0.056	0.026
BQTerrace	0.193	0.049
平均	0.263	0.093

序列	所提的帧层码率分配算法
序列	?Bit-rate/%?PSNR/dB
BasketballPass	?2.71+0.133
BlowingBubbles	?2.04+0.087
BasketballDrill	?2.51+0.108
BQmall	?2.93+0.125
Fourpeople	?4.77+0.089
Johnny	?3.54+0.114
ParkScene	?2.85+0.083
BQTerrace	?3.72+0.086
平均	?3.13+0.103

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H.265/HEVC frame-level bitrate allocation algorithm considering video content

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