易错环境中视频传输空域差错恢复的优化方法

Spatial Error Resilience Optimization of Video Transmission in Error-prone Environment

在易错环境如因特网、无线通信网中传输视频流,误码率相当高。讨论了一种有效的在易错网中传输视频信号时,提高空域差错恢复能力的方法。同步标记可限制空域差错在视频帧之间传播。但是,如果其使用太频繁,会导致不必要的开销。为优化同步标记插入过程,给出一个同步标记插入算法。最后,为验证该算法,提供了仿真实验结果。

Bit error rates will be quite high when transmit video coding in error-prone environments such as Internet and wireless communication network etc. Describe an effective method for increasing the spatial error recovery of video transmission over bit error prone networks. Synchronization markers limit the propagation of spatial errors within video frames. However,if used too frequently,it will introduce an unnecessary increase in bit rate. In order to optimize placement of synchronization markers, the synchronization marker insertion algorithms are introduced. Fi- nally, for the purpose of verifying this method, experimental results are presented.