%0 Journal Article
%T Object-based Rate Control Scheme for H. 264 Video Coding<br>面向对象的H.264码率控制算法
%A XUE Wei
%A DU Si-dan
%A YE Xi-jun
%A <br>薛卫
%A 都思丹
%A 叶锡君
%J 计算机科学
%D 2010
%I 
%X A new rate control scheme in H.264 coding standard was proposed.The scheme includes + shape MAD prediction model based on space and time relativity of MAD.We used former frame bit usage as penalty factor to modify the bit-allocation rule to balance buffer share.Furthermore,combining video text extraction techniques,the method realized macro bit allocation and quantization step based on text area.Experimental results show that the new rate-control scheme can control the bits very well and the average PSNR is...
%K H
%K 264
%K Rate control
%K Text object<br>H.264
%K 码率控制
%K 文字对象
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=64A12D73428C8B8DBFB978D04DFEB3C1&aid=1DC4ED55EE3588D40A27C743D7C8A538&yid=140ECF96957D60B2&vid=42425781F0B1C26E&iid=0B39A22176CE99FB&sid=6DE26652A1045643&eid=76B5E24D6EC46B4B&journal_id=1002-137X&journal_name=计算机科学&referenced_num=0&reference_num=13