DC coefficients recovery-based error concealment technique for MPEG-2 video streams

被引：0
|
作者：
Cao, JH [1 ]
Wang, ZH [1 ]
Li, FT [1 ]
机构：
[1] Tsing Hua Univ, Dept Elect Engn, Beijing 100084, Peoples R China
来源：
WAVELET ANALYSIS AND ITS APPLICATIONS (WAA), VOLS 1 AND 2 | 2003年
关键词：
D O I：
暂无
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
This letter presents a novel error concealment technique of DC(Direct Coefficient) values in DCT(Discrete Cosine Transform) and its application to MPEG-2 video stream error. Assuming a smoothness constraint on image intensity, the detection method of errors is proposed, and the image quality influenced by the DC values error is analyzed in detail. Analyzed result shows that the DC values error doesn't usually have effect on the image detail and only make image become bright or dark. Computer simulation results show that our approach is efficient and more excellent than spatial interpolation method.
引用
收藏
页码：85 / 90
页数：6
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