Abstract
As a fundamental problem in image processing, image deblurring has still attracted a lot of research attention. Due to the large computational cost, especially for high-resolution images, it becomes challenging to solve the deblurring minimization problem and the underlying partial differential equations. The domain decomposition method (DD), as one of the most efficient algorithms for solving large scale problems, had not been applied directly to image deblurring because of the global characteristic of the blur operator. In this paper, in order to avoid separating the blur operator, we propose an algorithm for directly solving the total variational based minimization problems with DD. Various numerical experiments and comparisons demonstrate that the larger the image size is, the more efficient the proposed method is in saving running time. The parallelization has also been realized by using the parallel computing toolbox of MATLAB.
Original language | English |
---|---|
Pages (from-to) | 401-414 |
Number of pages | 14 |
Journal | Journal of Computational and Applied Mathematics |
Volume | 271 |
DOIs | |
State | Published - Dec 1 2014 |
Bibliographical note
Funding Information:This research is supported by Singapore MOE Grant T207B2202 , and Singapore NRF 2007IDM-IDM002-010 . The research of the first author is also partially supported by Youth Foundation of NSFC with Grant Nos. 11001239 , 11101365 , and 11201420 . The second author is partially supported by PHD Programme 52XB1304 of Tianjin Normal University and NSFC with Grant No. 11071080 .
Funding
This research is supported by Singapore MOE Grant T207B2202 , and Singapore NRF 2007IDM-IDM002-010 . The research of the first author is also partially supported by Youth Foundation of NSFC with Grant Nos. 11001239 , 11101365 , and 11201420 . The second author is partially supported by PHD Programme 52XB1304 of Tianjin Normal University and NSFC with Grant No. 11071080 .
Funders | Funder number |
---|---|
Youth Foundation of NSFC | 11101365, 52XB1304, 11201420, 11001239 |
Danish National Research Foundation | 2007IDM-IDM002-010 |
Ministry of Education - Singapore | T207B2202 |
National Natural Science Foundation of China (NSFC) | 11071080 |
Tianjin Normal University |
Keywords
- Image deblurring
- Overlapping domain decomposition
- Total variation minimization
ASJC Scopus subject areas
- Computational Mathematics
- Applied Mathematics