一种基于边缘检测的错误隐藏算法

An Error Concealment Method Based on Edge Detection

视频压缩码流在信道传输时，由于受到信道稳定性的影响，容易发生数据包的损坏或者丢失。为了对抗信道差错，必须采取适当的技术措施。目前，错误隐藏技术已成为易发生差错信道下视频编码的重要组成部分。本文提出了一种新的基于边缘检测的空域错误隐藏方法。实验表明，在具有边缘的区域，该方法能够使图像恢复得较好，其PSNR比传统内插方法提高了大约4～5dB。

When the compressed video stream is transmitting in the channel, due to the channels instability, the data packet may be lost or damaged easily. To counter the channel errors, we must take appropriate technical measures. At present, the error concealment technology has become one of the important components of the video coding technology. This paper presents a new spatial error concealment method based on edge detection. The experiments show that, in the edge region, this method can make the damaged image restore better. Compared with the traditional methods, its PSNR increases about 4-5dB.