基于最小像素跨度准则的空域错误隐藏方法  

A new spatial error concealment method based on minimum pixel span criteria

作　　者：马宇峰[1] 蔡安妮[1] 

机构地区：[1]北京邮电大学电信工程学院,北京100876

出　　处：《通信学报》2005年第1期1-5,共5页Journal on Communications

摘　　要：提出了一种新的基于最小像素跨度的错误隐藏方法,利用丢失块边界的像素,在无需进行边缘估计的情况下能够有效地恢复出丢失块中可能存在的边缘。本方法主要包括以下三个步骤:1)在最小像素跨度准则下将待恢复像素分为有争议像素和无争议像素;2)对有争议像素和无争议像素使用不同方法分别恢复;3)对整个丢失块做滤波处理以消除上述过程中的噪点。试验表明本方法有效地保留边缘,并在 PSNR 上优于其它传统方法 1～2dB。A new error concealment method based on MPSC is proposed to reconstruct the missing block with the intact pixels surrounding it. It can preserve the edge faithfully without edge estimation. Three steps are included as below. Firstly, the pixels in the missing block are divided into two groups, arguable pixels and ascertainable pixels based on MPSC. Secondly, the arguable pixels and ascertainable pixels are reconstructed in different way respectively. Finally, a filter is applied to eliminate the noise-like pixels. Simulation results show that it outperforms the other conventional methods with 1-2dB in PSNR.

关 键 词：多媒体通信 视频通信 差错隐藏 像素跨度 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]