H.26L参考帧选择技术研究与实现  

Technology of reference picture selection based on H.26L

作　　者：李云峰[1] 彭强[1] 蒋志平[1] 

机构地区：[1]西南交通大学计算机与通信工程学院,四川成都610031

出　　处：《成都信息工程学院学报》2004年第2期158-161,共4页Journal of Chengdu University of Information Technology

摘　　要：采用了预测编码的视频数据对传输差错极为敏感 ,为了有效地消除网络传输错误对解码图像的影响 ,介绍了一种基于反馈的参考帧选择 (RPS :ReferencePictureSelection)技术。它利用反馈信道传回的差错信息 ,选择被正确解码的帧作为参考来进行编码。仿真试验给出了各种RPS模式下图像的主客观质量 。The compressed video is sensitive to the network error due to the predicted coding. To eliminate the effect of the transmission error the technique of the reference picture selection based on the backward channel is introduced. The reference pictures are dynamically replaced in the encoder in response to an acknowledge signal sent from the decoder. The performance of the proposed system compared with the previous version of ITU-TH,26L by a computer simulation is shown.

关 键 词：参考帧选择 视频编码 H.26L 

分 类 号：TN919.81[电子电信—通信与信息系统]