摘要
提出一种适用于丢包网络、面向图像组(GOP)层的非均等视频流丢失保护方案。利用GOP中不同帧之间的非均等显著性,将不同数量前向错误校正包分配到GOP层的不同帧中。采用帧间包交错机制将突发包丢失分散到不同帧上,提高处理突发包丢失时的鲁棒性。仿真结果表明,在不同信道丢失模式下,该方案能提高视频接收质量。
This paper proposes a unequal loss protection scheme for video stream. This scheme is suit for packet loss networks and Group of Picture(GOP) level oriented. By using the unequal significance in different frames in GOE different amounts of Forward Error Correction(FEC) packets are allocated to different frames on GOP level. It adopts inter-frame packets interlacing mechanism to make this scheme more robust against burst packet loss. Simulation results show that this scheme can improve video receiving quality under different channel loss patterns.
出处
《计算机工程》
CAS
CSCD
北大核心
2009年第18期221-223,233,共4页
Computer Engineering
基金
国家自然科学基金资助项目(60432030)
关键词
视频传输
前向错误纠正
非均等丢失保护
错误传播模型
video transmission
Forward Error Correction(FEC)
unequal loss protection
error propagation model