Packet video error concealment with Gaussian mixture models

被引：34
|
作者：
Persson, Daniel [1 ]
Eriksson, Thomas [1 ]
Hedelin, Per [1 ]
机构：
[1] Chalmers, Dept Signals & Syst, S-41296 Gothenburg, Sweden
来源：
IEEE TRANSACTIONS ON IMAGE PROCESSING | 2008年 / 17卷 / 02期
关键词：
error concealment; Gaussian mixture model (GMM); packet video; video modeling;
D O I：
10.1109/TIP.2007.914151
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
In this paper, Gaussian mixture modeling is applied to error concealment for block-based packet video. A Gaussian mixture model for video data is obtained offline and is thereafter utilized online in order to restore lost blocks from spatial and temporal surrounding information. We propose estimators on closed form for missing data in the case of varying available neighboring contexts. Our error concealment strategy increases peak signal-tonoise ratio compared to previously proposed schemes. Examples of improved subjective visual quality by means of the proposed method are also supplied.
引用
收藏
页码：145 / 154
页数：10
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