Abstract
This paper studies the application of preconditioned conjugate gradient methods in high resolution color image reconstruction problems. The high resolution color images are reconstructed from multiple undersampled, shifted, degraded color frames with subpixel displacements. The resulting degradation matrices are spatially variant. The preconditioners are derived by taking the cosine transform approximation of the degradation matrices. The resulting preconditioning matrices allow the use of fast transform methods. We show how the methods can be implemented on parallel computers, and we demonstrate their parallel efficiency using experiments on a sixteen processor IBM SP-2.
Original language | English |
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Title of host publication | Proceedings Seventh International Conference on Parallel and Distributed Systems: Workshops |
Editors | Yoshitaka Shibata |
Publisher | IEEE |
Pages | 547-552 |
Number of pages | 6 |
ISBN (Print) | 0769505716, 9780769505718, 0769505724 , 0769505732 |
DOIs | |
Publication status | Published - 4 Jul 2000 |
Event | 7th International Conference on Parallel and Distributed Systems, ICPADS 2000 - Iwate, Japan Duration: 4 Jul 2000 → 7 Jul 2000 https://ieeexplore.ieee.org/xpl/conhome/6934/proceeding https://ieeexplore.ieee.org/xpl/conhome/7101/proceeding |
Publication series
Name | Proceedings - International Conference on Parallel and Distributed Systems: Workshops |
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Conference
Conference | 7th International Conference on Parallel and Distributed Systems, ICPADS 2000 |
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Country/Territory | Japan |
City | Iwate |
Period | 4/07/00 → 7/07/00 |
Internet address |
Scopus Subject Areas
- Computer Networks and Communications
- Hardware and Architecture