%0 Journal Article
%T New frame-layer rate control algorithm based on H.264/AVC<br>基于H.264/AVC的一种新的帧一层码率控制算法
%A WANG Zhao-shun
%A ZHANG Ping
%A <br>王昭顺
%A 张平
%J 计算机应用
%D 2005
%I 
%X Rate control algorithm(JVT-H017) has been given in encoder reference software JM(Joint Model) 8.4.However,in JM a linear model is used to predict the MAD,which costs too much operations and exists deviations.A new frame-layer non-linear quantization parameter calculation model was proposed.Simulation results show that,comparing with JVT-H017,the H.264 coder using the proposed algorithm can control the bit rate more accurately and obtain a higher PSNR and visual quality.Especially when the two schemes are applied to the sequence with scene changes,no buffer overflow or underflow is guaranteed.
%K H
%K 264
%K rate control
%K Mean Absolute Difference(MAD)
%K QP value
%K target bits<br>H.264
%K 码率控制
%K 平均绝对差
%K QP值
%K 目标比特数
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=831E194C147C78FAAFCC50BC7ADD1732&aid=339215CFFF804918&yid=2DD7160C83D0ACED&vid=C5154311167311FE&iid=59906B3B2830C2C5&sid=3873FD84EFD2E10C&eid=AB222DFB6FC6A3A5&journal_id=1001-9081&journal_name=计算机应用&referenced_num=3&reference_num=4