摘要
H.264/AVC中I帧的传输错误不仅会破坏当前的解码帧,还会在时间上扩散,对后续P帧的预测带来严重的影响。因此本文提出了一种通过计算受损宏块周围边缘方向的信息熵来自适应的选择双线性内插或方向性内插的错误隐藏方法。实验表明,该方法与单独使用双线性内插法或方向内插法相比,具有较好的误码掩盖效果,PSNR相比至少提高了0.27dB。
The transmission error of H. 264 intra frame will not only damage the current decoded frame,but also result in deterioration of image which is bad for the prediction of P frames. In this paper, an error concealment method for intra frame is proposed by mean of calculate the information entropy of edge direction around the macroblock with errors, which will select the appropriate algorithm between bi-linear interpolation and directional interpolation. The experiments show that this method has better error concealment effect. Compared with bi-linear interpolation or directional interpolation, its PSNR increases 0.27 dB at least.
出处
《燕山大学学报》
CAS
2010年第5期454-458,共5页
Journal of Yanshan University
关键词
错误隐藏
双线性内插
方向性内插
信息熵
error concealment
bi-linear interpolation
directional interpolation
information entropy
