%0 Journal Article
%T MPEG-21 Digital Item Adaptation by Applying Perceived Motion Energy to H. 264/AVC Video<br>基于感知运动能量模型的MPEG-21数字项适配
%A ZHAO Gang
%A YANG Zong--Kai
%A HE Jian--Hua
%A <br>赵刚
%A 杨宗凯
%A 何建华
%J 计算机科学
%D 2005
%I 
%X The new MPEG-21 standard defines a multimedia framework to enable transparent and augmented use of multimedia resources across heterogeneous networks and devices used by different communities. In this paper, we in- corporate the Perceived Motion Energy (PME) Model into the proposed MPEG-21 Digital Item Adaptation Frame- work for frame dropping in H. 264 encoded video adaptation. There are two advantages of this work, one is the use of PME model to reduce the viewer's perceived motion jitter due to frame dropping to a minimum. The other is the adap- tation nodes can easily apply frame dropping operations without knowledge of detailed encoding syntax of H. 264 videos.
%K MPEG-21
%K 能量模型
%K 数字项
%K 感知
%K H．264／AVC
%K 数据处理能力
%K 多媒体框架
%K 多媒体资源
%K 标准定义
%K 充分利用
%K 透明传输
%K 异构网络
%K 关键技术
%K 适配技术
%K 运动能量
%K 解码算法
%K 语法结构
%K 资源受限
%K 编码格式
%K 可扩展性
%K 丢帧
%K 灵活性
%K 视频
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=64A12D73428C8B8DBFB978D04DFEB3C1&aid=5FCE6FD5265D5BCB&yid=2DD7160C83D0ACED&vid=9971A5E270697F23&iid=DF92D298D3FF1E6E&sid=6DE26652A1045643&eid=03A030BB0C519C60&journal_id=1002-137X&journal_name=计算机科学&referenced_num=0&reference_num=9