摘要
为提高在视频通信中重建图像的质量,针对H.264\AVC视频编码标准的新特性,提出了一种新的基于H.264\AVC的差错隐藏方法。受损的帧或者宏块导致的解码错误会在时间上和空间上扩散,该算法充分利用了基于模型的编码和宏块的空间、时间相关性来对受损帧或者宏块进行恢复。仿真结果表明这种方法在不增加比特率的情况下,使峰值信噪比值得到了提高。
For enhancing the quality of reconstructed images, a novel error concealment method based on H. 264 ／ AVC was proposed in this paper for the newest international video coding standard H. 264 ／ AVC. Decoding errors in video communications caused by macroblock or frame loss will propagate both in the temporal and spatial domains and will substantially reduce the video quality. The algorithm efficiently exploits the temporal and spatial correlation and context-based model to recover the lost macroblock and frame. Simulation result shows that this approach can make SNR improve in the case of no increasing bit-rate.
出处
《信息技术》
2009年第3期71-73,共3页
Information Technology
