%0 Journal Article
%T A New Adaptive Rate Control Algorithm with Spatial Scalability for Video Coding<br>一种空域可分级的自适应视频码流控制方法
%A Zhang Jian-long
%A Wu Cheng-ke
%A Xiao Song
%A Du Jian-chao
%A <br>张建龙
%A 吴成柯
%A 肖 嵩
%A 杜建超
%J 电子与信息学报
%D 2006
%I 
%X In the traditional CBR rate control algorithm, the skipping method is adopted to combat the overflow of video buffer, in which the motion compensation error and picture distortion are increased with the number of skipping frame. To deal with the disadvantage of traditional skipping method, a new adaptive rate control algorithm with spatial scalability for video coding is presented in this paper. In the method, the original skipped frame is adaptively sub-sampled at encoder and is up-sampled in decoder. Simulation results show that this scheme can highly improve the quality of reconstructed video and obtain a gain of about0.3-0.8dB and 0.1-0.4dB in PSNR respectively compared with the traditional skipping method and the method of increasing quantization step.
%K Spatial scalability
%K Adaptive rate-control
%K Constant Bit Rate(CBR)
%K Variable Bit Rate(VBR)<br>空域可分级
%K 自适应流控
%K 固定比特率控制
%K 可变比特率控制
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=442DF50EC2B26625&yid=37904DC365DD7266&vid=D3E34374A0D77D7F&iid=38B194292C032A66&sid=A22854835F81B3F8&eid=396DD691E964F390&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=8