Shirai Keiichiro 白井啓一郎

… Alternative Names

SHIRAI Keiichiro 白井啓一郎

Less

Researcher Number	00447723
Other IDs
Affiliation (Current)	2025: 信州大学, 学術研究院工学系, 准教授
Affiliation (based on the past Project Information) *help	2017 – 2023: 信州大学, 学術研究院工学系, 准教授 2016: 信州大学, 学術研究院工学系, 助教 2013 – 2015: 信州大学, 工学部, 助教 2009 – 2011: 信州大学, 工学部, 助教
Review Section/Research Field	Principal Investigator Basic Section 21030:Measurement engineering-related / Basic Section 61010:Perceptual information processing-related Except Principal Investigator Basic Section 61010:Perceptual information processing-related / Medium-sized Section 3:History, archaeology, museology, and related fields / Japanese history / Perception information processing/Intelligent robotics / Fundamental theory of informatics
Keywords	Principal Investigator スペクトル分離 / パタン分離 / 画像分離 / スペクトル解析 / パタン解析 / ピーク解析 / 自己相関 / 局所領域 / 画像処理 / 高速化 … More / 摂動論 / テンソル分解 / カラーライン特徴 / スパースモデリング / カラー画像処理 / 縮退処理 / 特異値分解 … More Except Principal Investigator 漢字 / データベース / 出土文字資料 / 木簡 / ハッシング / アダマール系列 / クロスモーダル検索 / Perfect-code / 画像検索 / Quasi-Perfect-code / Perfect Code / 四元数 / 複素アダマール / クロスモーダル / Perfect-Code / アダマール行列 / バイナリハッシング / 律令制 / 平城宮・京 / 文字文化 / 東アジア / 平城京 / 平城宮 / 木簡学 / 削屑 / 墨書土器 / 古代史 / 日本史 / i字形 / 史料研究 / 異体字 / 文字認識 / 日本古代史 / OCR / 文書画像処理 / 数式認識 / パターン認識 / 情報検索 / 木パターン照合問題 / XPath / XML検索 / 拡張疑似木パターン照合問題 / XML / ビット並列アルゴリズム / 文字列パターン照合 / 木パターン照合 / 検索 / ビット並列 / 木パターン / パターン照合 / アルゴリズム Less

画像中のパタンノイズ分離法と周波数スペクトルを用いたパタン成分の特徴づけ法の開発Principal Investigator
- Principal Investigator
  
  白井啓一郎
- Project Period (FY)
  2022 – 2024
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 21030:Measurement engineering-related
- Research Institution
  Shinshu University
Application of Perfect-code to hashing and mathematical analysis
- Principal Investigator
  
  Koutaki Gou
- Project Period (FY)
  2019 – 2021
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Review Section
  
  Basic Section 61010:Perceptual information processing-related
- Research Institution
  Kumamoto University
Development of high-efficiency calculation method for solving inverse problem and singular value decomposition for each local area in image restoration processingPrincipal Investigator
- Principal Investigator
  
  Shirai Keiichiro
- Project Period (FY)
  2018 – 2021
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 61010:Perceptual information processing-related
- Research Institution
  Shinshu University
Conversion of Wooden Documents Recovered from the Nara Palace and Capital and Their Historic Context into a Global Resource
- Principal Investigator
  
  WATANABE AKIHIRO
- Project Period (FY)
  2018 – 2021
- Research Category
  
  Grant-in-Aid for Scientific Research (A)
- Review Section
  
  Medium-sized Section 3:History, archaeology, museology, and related fields
- Research Institution
  Nara National Research Institute for Cultural Properties
Central information management and knowledge compilation for the development as a resource of wooden tablets and other excavated documentary materials
- Principal Investigator
  
  WATANABE AKIHIRO
- Project Period (FY)
  2013 – 2017
- Research Category
  
  Grant-in-Aid for Scientific Research (S)
- Research Field
  
  Japanese history
- Research Institution
  Nara National Research Institute for Cultural Properties
Design of fast tree pattern matching algorithms using bit-parallelism on strings
- Principal Investigator
  
  YAMAMOTO Hiroaki
- Project Period (FY)
  2009 – 2011
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Fundamental theory of informatics
- Research Institution
  Shinshu University
Embedding a Mathematical OCR Module into OCRopus
- Principal Investigator
  
  OKAMOTO Masayuki
- Project Period (FY)
  2009 – 2011
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Perception information processing/Intelligent robotics
- Research Institution
  Shinshu University

All 2023 2022 2021 2019 2018 2016 2014 2013 2011 Other

All Journal Article Presentation

[Journal Article] Pixel-wise parallel calculation for depth from focus with adaptive focus measure2022
- Author(s)
  Yoichi Matsubara, Keiichiro Shirai, Yuya Ito, Kiyoshi Tanaka
- Journal Title
  
  Multidimensional Systems and Signal Processing
  
  Volume: 33 Issue: 1 Pages: 121-142
- DOI
  10.1007/s11045-021-00794-9
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-18K11351
[Journal Article] Efficient pixel-wise SVD required for image processing using the color line feature2021
- Author(s)
  Keiichiro Shirai, Yuya Ito, Hidetoshi Miyao, Minoru Maruyama
- Journal Title
  
  IEEE Access
  
  Volume: 9 Pages: 79449-79460
- DOI
  10.1109/access.2021.3083895
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-18K11351
[Journal Article] 古文書デジタルアーカイブに対する横断的字形検索サービスの試作2014
- Author(s)
  耒代誠仁, 白井啓一郎, 馬場基, 渡辺晃宏, 井上聡, 久留島典子, 中川正樹
- Journal Title
  
  情報処理学会人文科学とコンピュータシンポジウム「じんもんこん2014」論文集
  
  Volume: 2014-3 Pages: 87-92
- NAID
  170000088041
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-25220401
[Journal Article] 古文書字形検索サーバの設計と試作2014
- Author(s)
  耒代誠仁, 白井啓一郎, 馬場基, 渡辺晃宏, 井上聡, 久留島典子, 中川正樹
- Journal Title
  
  日本情報考古学会講演論文集
  
  Volume: 2014-13 Pages: 75-77
- NAID
  40020649208
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-25220401
[Journal Article] 古代木簡に対する平滑化処理の適用および古代木簡解読支援システムのアップデート2013
- Author(s)
  耒代誠仁, 白井啓一郎, 遠藤友樹, 中川正樹, 馬場基, 渡辺晃宏, 井上聡, 久留島典子
- Journal Title
  
  情報処理学会人文科学とコンピュータシンポジウム「じんもんこん2013」論文集
  
  Volume: 2013-4 Pages: 65-70
- NAID
  170000079277
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-25220401
[Journal Article] Image processing and shape repairing for historical character pattern retrieval.2013
- Author(s)
  Akihito Kitadai, Keiichi Shirai, Satoshi Inoue, Noriko Kurushima, Hajime Baba, Akihiro Watanabe and Masaki Nakagawa
- Journal Title
  
  Proc. 16th Biennial Conference of the International Graphonomics Society.
  
  Volume: 1 Pages: 58-61
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-25220401
[Journal Article] Character Shape Restoration of Binarized Historical Documents by Smoothing via Geodesic Morphology2013
- Author(s)
  K. Shirai, Y. Endo, A. Kitadai, S. Inoue, N. Kurushima, H. Baba, A. Watanabe, M. Nakagawa.
- Journal Title
  
  Proc. 12th International Conference on Document Analysis and Recognition
  
  Volume: 1 Pages: 1317-1321
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-25220401
[Presentation] 画像からのパタンノイズ分離のための最小パタンサイズの検出方法2023
- Author(s)
  中川諒太朗, 白井啓一郎
- Organizer
  電子情報通信学会　信越支部大会
- Data Source
  KAKENHI-PROJECT-22K04123
[Presentation] 画像の画素ごとの特異値分解における初期値伝播法の検討2019
- Author(s)
  伊藤勇弥，白井啓一郎，宮尾秀俊，丸山稔
- Organizer
  電子情報通信学会信越支部大会
- Data Source
  KAKENHI-PROJECT-18K11351
[Presentation] 画像の局所領域ごとの特異値分解における初期値の伝播法の検討2019
- Author(s)
  伊藤勇弥，白井啓一郎，宮尾秀俊，丸山稔
- Organizer
  電子情報通信学会信号処理研究専門委員会信号処理シンポジウム
- Data Source
  KAKENHI-PROJECT-18K11351
[Presentation] 木簡画像データベース用の単色・カラー画像の判別法および木簡領域の検出法の検討2018
- Author(s)
  岡谷陽平，白井啓一郎，宮尾秀俊，丸山稔
- Organizer
  画像センシング技術研究会画像センシングシンポジウム（SSII）
- Data Source
  KAKENHI-PROJECT-18H03597
[Presentation] 複数の色や成分を扱う画像処理における画素ごとの特異値分解の計算効率化2018
- Author(s)
  伊藤勇弥, 白井啓一郎, 宮尾秀俊, 丸山稔
- Organizer
  電子情報通信学会信号処理シンポジウム
- Data Source
  KAKENHI-PROJECT-18K11351
[Presentation] 木簡画像に対するSVMを用いた背景領域の検出法の検討2018
- Author(s)
  岡谷陽平，白井啓一郎，宮尾秀俊，丸山稔
- Organizer
  電子情報通信学会信越支部大会
- Data Source
  KAKENHI-PROJECT-18H03597
[Presentation] 複数の色や成分を扱う画像処理における画素ごとの特異値分解の計算効率化の検討2018
- Author(s)
  伊藤勇弥, 白井啓一郎, 宮尾秀俊, 丸山稔
- Organizer
  電子情報通信学会回路とシステムワークショップ
- Data Source
  KAKENHI-PROJECT-18K11351
[Presentation] カラーライン特徴を用いた画像処理における画素ごとの特異値分解の計算効率化の検討2018
- Author(s)
  伊藤勇弥, 白井啓一郎, 宮尾秀俊, 丸山稔
- Organizer
  電子情報通信学会信越支部大会
- Data Source
  KAKENHI-PROJECT-18K11351
[Presentation] RGB色成分の線形和による木簡画像からの墨文字の抽出法2016
- Author(s)
  杉本拓也, 藤森和博, 白井啓一郎, 宮尾秀俊, 丸山稔
- Organizer
  レーザ・レーダ研究会・レーザセンシングシンポジウム2016年9月9日
- Place of Presentation
  長野県野沢温泉スパアリーナコンベンションホール
- Year and Date
  2016-09-09
- Data Source
  KAKENHI-PROJECT-25220401
[Presentation] Embedding a mathematical OCR module into OCRopus2011
- Author(s)
  S.Yamazaki, F.Furukori, Q.Zhao, K.Shirai, M.Okamoto
- Organizer
  IAPR Inter.Conf.on Document Analysis and Recognition (ICDAR)
- Place of Presentation
  北京,中国
- Year and Date
  2011-09-20
- Data Source
  KAKENHI-PROJECT-21500163
[Presentation] OCRソフトOCRopusへの数式認識モジュールの組込みの検討2011
- Author(s)
  山崎、古郡、趙、白井、岡本
- Organizer
  信学技報PRMU2010-267, vo1.110, pp.177-182
- Place of Presentation
  産総研(つくば)
- Year and Date
  2011-03-12
- Data Source
  KAKENHI-PROJECT-21500163
[Presentation] Embedding a mathematical OCR module into OCRopus2011
- Author(s)
  S. Yamazaki, F. Furukori, Q. Zhao, K. Shirai, M. Okamoto
- Organizer
  Document Analysis and Recognition
- Place of Presentation
  Proc of IAPR Inter
- Year and Date
  2011-09-19
- Data Source
  KAKENHI-PROJECT-21500163
[Presentation] 合焦位置を起点とした文字列抽出の一検討2011
- Author(s)
  王、馬、白井、岡本
- Organizer
  信学技報PRMU2010-286, vol.110, pp.287-292
- Place of Presentation
  産総研(つくば)
- Year and Date
  2011-03-12
- Data Source
  KAKENHI-PROJECT-21500163
[Presentation] OCRソフトOCRopusへの数式認識モジュールの組込みの検討2011
- Author(s)
  山崎慎平,古郡史啓,趙勤政,白井啓一郎,岡本正行
- Organizer
  信学技報PRMU2010-267
- Year and Date
  2011-03-11
- Data Source
  KAKENHI-PROJECT-21500163
[Presentation] 合焦位置を起点とした文字列抽出の一検討2011
- Author(s)
  王済凱,馬国峰,白井啓一郎,岡本正行
- Organizer
  信学技報PRMU2010-286
- Year and Date
  2011-03-11
- Data Source
  KAKENHI-PROJECT-21500163
[Presentation] Character shape restoration of binarized historical documents by smoothing via geodesic morphology
- Author(s)
  K. Shirai, Y. Endo, A. Kitadai, S. Inoue, N. Kurushima, H. Baba, A. Watanabe, M. Nakagawa
- Organizer
  Character shape restoration of binarized historical documents by smoothing via geodesic morphology
- Place of Presentation
  アメリカ　ワシントン、オムニホテル
- Data Source
  KAKENHI-PROJECT-25220401
[Presentation] Image processing and shape repairing for historical character pattern retrieval
- Author(s)
  A. Kitadai, K. Shirai, S. Inoue, N. Kurushima, H. Baba, A. Watanabe, M. Nakagawa
- Organizer
  Proc. 16th International Graphonomics Society Conference(IGS2014)
- Place of Presentation
  日本　奈良　東大寺総合文化センター
- Data Source
  KAKENHI-PROJECT-25220401

1. OKAMOTO Masayuki (50109196)

# of Collaborated Projects: 2 results

# of Collaborated Products: 6 results
2. WATANABE AKIHIRO (30212319)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
3. INOUE SATOSHI (20302656)

# of Collaborated Projects: 2 results

# of Collaborated Products: 7 results
4. TAKATA YUICHI (50708576)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
5. 中川正樹 (10126295)

# of Collaborated Projects: 2 results

# of Collaborated Products: 7 results
6. 耒代誠仁 (00401456)

# of Collaborated Projects: 2 results

# of Collaborated Products: 7 results
7. 馬場基 (70332195)

# of Collaborated Projects: 2 results

# of Collaborated Products: 7 results
8. 山本崇 (00359449)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
9. 小口雅史 (00177198)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
10. YAMAMOTO Hiroaki (10182643)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
11. MIYAZAKI Takashi (10141889)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
12. SHIBAYAMA MAMORU (10162645)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
13. OIKAWA AKIHUMI (30091888)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
14. KUWATA KUNIYA (50568764)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
15. KOUDUMA YOUSEI (80234699)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
16. YOSHIKAWA SATOSHI (60321626)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
17. YAMADA SYOUJI (20248751)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
18. Koutaki Gou (20582935)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
19. 笹原宏之 (80269505)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
20. 森本晋 (40220082)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
21. 久留島典子 (70143534)

# of Collaborated Projects: 1 results

# of Collaborated Products: 7 results
22. 山口英男 (40182456)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
23. 高田智和 (90415612)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
24. 朱碧蘭 (50466918)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
25. 大山航 (10324550)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
26. 井上幸 (30549241)

# of Collaborated Projects: 1 results

# of Collaborated Products: 7 results
27. 金田明大 (20290934)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
28. 北村優季 (20177869)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
29. 李成市 (30242374)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
30. 角谷常子 (00280032)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
31. 前川歩 (60711984)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
32. 鈴木智大 (60534691)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
33. 京地清介 (70634616)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
34. 松井勇佑 (80780676)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
35. YAMAMOTO YOSHITAKA

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
36. 渡邉晃宏

# of Collaborated Projects: 0 results

# of Collaborated Products: 7 results

Shirai Keiichiro 白井 啓一郎

SHIRAI Keiichiro 白井 啓一郎

Research Projects

Research Products

Co-Researchers

画像中のパタンノイズ分離法と周波数スペクトルを用いたパタン成分の特徴づけ法の開発Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Application of Perfect-code to hashing and mathematical analysis

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Development of high-efficiency calculation method for solving inverse problem and singular value decomposition for each local area in image restoration processingPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Conversion of Wooden Documents Recovered from the Nara Palace and Capital and Their Historic Context into a Global Resource

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Central information management and knowledge compilation for the development as a resource of wooden tablets and other excavated documentary materials

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Design of fast tree pattern matching algorithms using bit-parallelism on strings

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Embedding a Mathematical OCR Module into OCRopus

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

[Journal Article] Pixel-wise parallel calculation for depth from focus with adaptive focus measure2022

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Efficient pixel-wise SVD required for image processing using the color line feature2021

Author(s)

Journal Title

DOI

Data Source

[Journal Article] 古文書デジタルアーカイブに対する横断的字形検索サービスの試作2014

Author(s)

Journal Title

NAID

Data Source

[Journal Article] 古文書字形検索サーバの設計と試作2014

Author(s)

Journal Title

NAID

Data Source

[Journal Article] 古代木簡に対する平滑化処理の適用および古代木簡解読支援システムのアップデート2013

Author(s)

Journal Title

NAID

Data Source

[Journal Article] Image processing and shape repairing for historical character pattern retrieval.2013

Author(s)

Journal Title

Data Source

[Journal Article] Character Shape Restoration of Binarized Historical Documents by Smoothing via Geodesic Morphology2013

Author(s)

Journal Title

Data Source

Shirai Keiichiro 白井啓一郎

SHIRAI Keiichiro 白井啓一郎