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SURE-Based Projections Onto Convex Sets for Image Restoration
| Content Provider | Semantic Scholar |
|---|---|
| Author | Deng, Chunhui Tian, Weixin Wang, Shitong Hu, Songlin Rao, Wenyuan Li, Yong |
| Copyright Year | 2013 |
| Abstract | Projections onto convex sets (POCS) algorithms have been widely used for image restoration problem. However, the relaxation parameter (l ) of POCS is strongly data-dependent and difficult to tune. In this work we focus on optimally selecting such parameter in POCS algorithm for image restoration. A stein’s unbiased risk estimate (SURE) based POCS (SPOCS) for image restoration algorithm is proposed, in which SURE is used to determine an optimal value. Finally, the effectiveness of the optimality of the proposed parameter selection is tested by image restoration experiments. Streszczenie. W artykule przedstawiono metode optymalnego doboru parametru relaksacji dla algorytmu POCS, sluzącego do odtwarzania obrazow. W proponowanym rozwiązaniu (SPOCS) zastosowano estymator Stein’a (SURE), sluzący do wyznaczenia optymalnej wartości wspolczynnika lambda. Dzialania algorytmu zostalo zbadane eksperymentalnie. (Zastosowanie estymatora SURE w metodzie POCS do odtwarzania obrazow). |
| Starting Page | 167 |
| Ending Page | 170 |
| Page Count | 4 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://red.pe.org.pl/articles/2013/5/32.pdf |
| Alternate Webpage(s) | http://pe.org.pl/articles/2013/5/32.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |