一种基于H.264的细粒度多适应性视频编码算法  

Fine Granularity Adaptive Video Coding Algorithm Based on H.264

作　　者：蒲菊华[1] 熊璋[1] 侯亚荣[1] 

机构地区：[1]北京航空航天大学计算机学院601,北京100083

出　　处：《系统仿真学报》2005年第6期1462-1465,共4页Journal of System Simulation

基　　金：航天科技创新基金;航空基础科学基金(00F51057)

摘　　要：提出了一种基于H.264的细粒度多适应性编码算法并对其进行了仿真实验。该算法综合运用了MP(MatchingPursuit)变换和位面编码等细粒度编码技术,灵活地将MP变换结果分为两个层次的码流,帧间预测也采用了两级预测模式,生成了多层次细粒度的视频压缩码流。该算法输出码流具有精细可调性,能自适应网络带宽变化,对于解决视频应用在现有尽力而为网络上所面临的带宽波动和异构等问题有着重要意义。仿真实验证明了该算法的恢复质量和可伸缩性。A fine granular adaptive video coding algorithm is presented based on H.264, which combines such fine granular scalable (FGS) coding methods as matching pursuit and bit-plane, and the results of video residual after matching pursuit are encoded into two layer bit streams. Another point presented here is the two layer inter-prediction mode. All these results are multi-layer FGS video bit streams. The algorithm is flexible for granularity adjustment and adaptive to bandwidth variation, so it is a promising solution to video application over the best-effort internet with heterogeneity and bandwidth variation. The simulation and experiments indicate its performance in video recovery and scalability.

关 键 词：视频 细粒度 H.264 多适应性编码 匹配追踪变换 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]