Rate control for hierarchical B-frames in H.264/AVC  

作　　者：CHANG Kan YANG Bo MEN Ai-dong ZHANG Wen-hao 

机构地区：[1]School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China [2]School of Computer and Electronic Information, Guangxi University, Nanning 530004, China

出　　处：《The Journal of China Universities of Posts and Telecommunications》2010年第5期116-121,共6页中国邮电高校学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (60672087)

摘　　要：Hierarchical B-frames can bring high coding performance when introduced into H.264/AVC.However,the traditional rate control schemes can not work efficiently in such new coding framework.This article presents a rate control algorithm for hierarchical B-frames in H.264/AVC.Taking the feature of the dyadic hierarchical coding structure into consideration,the proposed algorithm includes group of pictures （GOP） layer,temporal layer and frame layer bits allocation.After frame layer bits allocation is complete,frame layer quantization parameters （QP） determination strategy is responsible for calculating the final QP.Experimental results show that compared with other rate control algorithms,the proposed one can improve the coding performance and reduce the mismatch of target bit rate and real bit rate.Hierarchical B-frames can bring high coding performance when introduced into H.264/AVC.However,the traditional rate control schemes can not work efficiently in such new coding framework.This article presents a rate control algorithm for hierarchical B-frames in H.264/AVC.Taking the feature of the dyadic hierarchical coding structure into consideration,the proposed algorithm includes group of pictures （GOP） layer,temporal layer and frame layer bits allocation.After frame layer bits allocation is complete,frame layer quantization parameters （QP） determination strategy is responsible for calculating the final QP.Experimental results show that compared with other rate control algorithms,the proposed one can improve the coding performance and reduce the mismatch of target bit rate and real bit rate.

关 键 词：H.264/AVC hierarchical B-frames rate control 

分 类 号：TN919.81[电子电信—通信与信息系统] TN915[电子电信—信息与通信工程]