| Presentation | 2018-05-18 Low-Dose CT Image Reconstruction with Multiclass Dictionary Learning Hiryu Kamoshita, Daichi Kitahara, Akira Hirabayashi, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We propose a high-precision CT image reconstruction method from low-dose X-ray projection data. In conventional reconstruction methods using a single patch-based dictionary, there exist many patches that cannot be expressed sparsely by the dictionary, and thus the reconstruction quality would not be sufficient. The proposed method adopts patch clustering and uses a different dictionary for each patch cluster. Simulations using real CT data demonstrate the effectiveness of the proposed method. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Low-Dose CT / Image Reconstruction / Dictionary Learning / Clustering |
| Paper # | SIP2018-15,IE2018-15,PRMU2018-15,MI2018-15 |
| Date of Issue | 2018-05-10 (SIP, IE, PRMU, MI) |
| Conference Information | |
| Committee | PRMU / MI / IE / SIP |
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| Conference Date | 2018/5/17(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Shinichi Sato(NII) / Kensaku Mori(Nagoya Univ.) / Takayuki Hamamoto(Tokyo Univ. of Science) / Masahiro Okuda(Univ. of Kitakyushu) |
| Vice Chair | Hironobu Fujiyoshi(Chubu Univ.) / Yoshihisa Ijiri(Omron) / Yoshiki Kawata(Tokushima Univ.) / Yuichi Kimura(Kinki Univ.) / Kazuya Kodama(NII) / Hideaki Kimata(NTT) / Shogo Muramatsu(Niigata Univ.) / Naoyuki Aikawa(TUS) |
| Secretary | Hironobu Fujiyoshi(AIST) / Yoshihisa Ijiri(NAIST) / Yoshiki Kawata(Aichi Inst. of Tech.) / Yuichi Kimura(Nagoya Inst. of Tech.) / Kazuya Kodama(Nagoya Univ.) / Hideaki Kimata(KDDI Research) / Shogo Muramatsu(Chiba Inst. of Tech.) / Naoyuki Aikawa(Takushoku Univ.) |
| Assistant | Masato Ishii(NEC) / Yusuke Sugano(Osaka Univ.) / Ryo Haraguchi(Univ. of Hyogo) / Yasushi Hirano(Yamaguchi Univ.) / Yasutaka Matsuo(NHK) / Kazuya Hayase(NTT) / Masayoshi Nakamoto(Hiroshima Univ.ひろ) |
| Paper Information | |
| Registration To | Technical Committee on Pattern Recognition and Media Understanding / Technical Committee on Medical Imaging / Technical Committee on Image Engineering / Technical Committee on Signal Processing |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Low-Dose CT Image Reconstruction with Multiclass Dictionary Learning |
| Sub Title (in English) | |
| Keyword(1) | Low-Dose CT |
| Keyword(2) | Image Reconstruction |
| Keyword(3) | Dictionary Learning |
| Keyword(4) | Clustering |
| 1st Author's Name | Hiryu Kamoshita |
| 1st Author's Affiliation | Ritsumeikan University(Ritsumeikan Univ.) |
| 2nd Author's Name | Daichi Kitahara |
| 2nd Author's Affiliation | Ritsumeikan University(Ritsumeikan Univ.) |
| 3rd Author's Name | Akira Hirabayashi |
| 3rd Author's Affiliation | Ritsumeikan University(Ritsumeikan Univ.) |
| Date | 2018-05-18 |
| Paper # | SIP2018-15,IE2018-15,PRMU2018-15,MI2018-15 |
| Volume (vol) | vol.118 |
| Number (no) | SIP-33,IE-34,PRMU-35,MI-36 |
| Page | pp.pp.63-68(SIP), pp.63-68(IE), pp.63-68(PRMU), pp.63-68(MI), |
| #Pages | 6 |
| Date of Issue | 2018-05-10 (SIP, IE, PRMU, MI) |