2024-03-29T13:30:44Z
https://u-ryukyu.repo.nii.ac.jp/oai
oai:u-ryukyu.repo.nii.ac.jp:02012473
2023-08-03T05:27:04Z
1642838163960:1642838338003
1642838403551:1642838406845
Fast and Robust Reconstruction of Penumbral Images by Combining Multiple Wiener Filters
Nozaki, Shinya
Azuma, Rumiko
Fujioka, Shinsuke
Chen, Yen-wei
Namihira, Yoshinori
open access
The Japan Society of Plasma Science and Nuclear Fusion Research
penumbral imaging
deconvolution
Wiener filter
heuristic method
computation time
Penumbral imaging is a powerful technique for imaging with penetrating radiation such as neutrons and hard x rays. The reconstructed image can be obtained by the deconvolution of the detected image. Usually a Wiener filter is used for the reconstruction. The limitation of the Wiener filter is that it will introduce a significant distortion when the detected image contains noise. On the other hand, heuristic methods can obtain clear reconstructed image from noisy penumbral images. However, it significantly takes computation time. We proposed a new reconstruction method in the penumbral imaging to obtain clear reconstructed image by combining the multiple Wiener filters and the method can reduce computation time. The effectiveness of the proposed method has been demonstrated by computer simulation and real laser plasma experiment.
論文
The Japan Society of Plasma Science and Nuclear Fusion Research
一般社団法人プラズマ・核融合学会
2011
eng
journal article
VoR
http://hdl.handle.net/20.500.12000/46087
http://hdl.handle.net/20.500.12000/46087
https://u-ryukyu.repo.nii.ac.jp/records/2012473
https://doi.org/10.1585/pfr.6.2406071
https://doi.org/10.1585/pfr.6.2406071
1880-6821
Plasma and Fusion Research
6
2406071-1
2406071-4
https://u-ryukyu.repo.nii.ac.jp/record/2012473/files/6_2406071.pdf