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基于Bayesian理论的压缩视频超分辨率重构 - 南京师范大学学报(工程
5 3 () Vo.l 5 N o. 3
2005 9 JOURNAL OF NAN JING NORMAL UN IVERSITY( ENGINEERING AND TECHNOLOGY) Se , 2005
基于 Bayesian理论的压缩视频超分辨率重构
1 2
周 亮, 周 芳
( 1. , 210003;
2. , 243002)
[] , Bayesian
. , Bayesian,
. CCD( Cyclic Coordinate Decent) SA ( Successive A rox mi ations),
. , ( PSNR)
, , .
[] , , ,
[] TP391, [] A, [ ] 2005)
Compressed V ideo SuperResolution Reconstruction
Based on Bayesian Theory
1 2
ZHOU L iang , ZHO U Fang
( 1. M inistry K ey Lab of IC and IP, N anjing University of Posts and Comm unications, Jiangsu N anjing 210003, China;
2. School of Electronic and Inform ation, AnhuiU niversity of Technology, AnhuiM aanshan 243002, China)
Abstract: In th is a er, a new algorithm of com ressed video su er- resolu tion restoration based on Bayesian esti
m ation is ro osed to resolve the roblem of the traditional restoration methods wh ich cannot be well a lied to the
com ressed video. A t first, an acqu isition of the com ressed video model is ro osed, then the su erresolution rob
lem is form ulatedw ith in the Bayes ian fram ew ork and theMAP criterion, and finally, a universal solu tion of the rob
lem is resented by integrating the CCD w ith SA. The results of the ex ermi ent dem onstrate that the algorithm not on
ly erform s better than the trad itional ones in term s of PSNR and restoration effect, but also has the characteristics of
easy extension.
K ey words: su erresolution, com ressed video, mi age reconstruction, Bayesian estmi ation
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