Fast and Robust Reconstruction of Penumbral Images by Combining Multiple Wiener Filters

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概要

• 論文の詳細を見る

• 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.

著者

• NOZAKI Shinya

  Transdisciplinary Research Organization for Subtropical and Island Studies University of the Ryukyus

• Chen Yen-wei

  College Of Information And Science Ristumeikan University

• Fujioka Shinsuke

  Institute of Laser Engineering (ILE), Osaka University, 2-6 Yamada-oka, Suita, Osaka 565-0871, Japan

• CHEN Yen-wei

  College of Information Science and Engineering, Ritsumeikan University, Shiga 525-8577, Japan

• AZUMA Rumiko

  Transdisciplinary Research Organization for Subtropics and Island Studies, University of the Ryukyus, Okinawa 903-0213, Japan

• NAMIHIRA Yoshinori

  Faculty of Engineering, University of the Ryukyus, Okinawa 903-0213, Japan

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