一种基于H.264的混合错误隐藏方法

A Mixed Error Concealment Method Based on H.264

随着基于H.264的视频传输业务越来越广泛的应用,针对视频传输的各种应用而进行的视频差错控制技术也逐渐成为研究的热点之一。针对网络中存在的各种误码问题,介绍了各种差错控制方法,并提出一种基于H.264的混合错误隐藏方法。该方法针对帧间预测块,采用时域错误隐藏和空域错误隐藏方法相结合的方式,将帧间受损宏块分割为4个8×8独立进行错误隐藏。利用JVT发布的JM测试模型进行的仿真结果表明,PSNR值较改进前提高约0.1～0.2db。

With the wide application of video transmission service based on H. 264, the error control methods becomes a hotspot in the video transmission field. This paper introduces the error control methods based on H. 264 and proposes a mixed error concealment method. For interframe prediction block, this method combines the temporal and spatial error concealment technologies, and divides one interframe damaged macro-block into four 8 × 8 blocks for independent error concealment. The simulation results by using JM codec provided by JVT show that the PSNR can be improved by 0.1～0.2 dB.