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| Role | Term | 
|---|---|
| Webmaster | June 2009 - December 2016 | 
| Vice-Chair | December 2016 - August 2018 | 
| Role | Term | 
|---|---|
| Associate Editor | October 2013 - July 2023 | 
| Guest Editor of Special Issue on Robust Reading | Volume 18, Issue 2, June 2015 | 
| Year | Role | 
|---|---|
| 2005 (1st) | Organizing Committee Member | 
| 2007 (2nd) | Organizing Committee Member | 
| 2009 (3rd) | Program Committee Member | 
| 2011 (4th) | Co-Chair | 
| 2013 (5th) | Co-Chair | 
| 2015 (6th) | Program Committee Member | 
| 2017 (7th) | Program Committee Member | 
| 2019 (8th) | Program Committee Member | 
| 2021 (9th) | Program Committee Member | 
| 2023 (10th) | Program Committee Member | 
| Year | Role | 
|---|---|
| 2008 (8th) | Program Committee Member &  Organizing Committee Member  | 
  
| 2010 (9th) | Program Committee Member | 
| 2012 (10th) | Program Committee Member | 
| 2014 (11th) | Program Committee Member | 
| 2016 (12th) | Program Committee Member | 
| 2018 (13th) | Program Committee Member | 
| 2022 (15th) | Program Committee Member | 
| Year | Role | 
|---|---|
| 2011 (11th) | Program Committee Member | 
| 2013 (12th) | Program Committee Member | 
| 2015 (13th) | Track Co-Chair | 
| 2017 (14th) | Executive Co-Chair & Financial Chair | 
| 2021 (16th) | Area Chair | 
| 2023 (17th) | Senior Program Committee Member | 
| Year | Role | 
|---|---|
| 2011 (1st) | Organizing Committee Member (Mentor) | 
| 2013 (2nd) | Mentor | 
| 2015 (3rd) | Mentor | 
| Year | 
|---|
| 2013 | 
| 2015 | 
| Year | Role | 
|---|---|
| 2014 (14th) | Program Committee Member | 
| 2016 (15th) | Program Committee Member | 
| 2018 (16th) | Program Committee Member | 
| Year | Role | 
|---|---|
| 2012 (21st) | Associate Editor (Track V: Document Analysis) | 
| 2014 (22nd) | Reviewer | 
| 2016 (23rd) | Reviewer | 
| 2018 (24th) | 
| Year | Role | 
|---|---|
| 2014 (1st) | Co-Chair | 
| 2016 (2nd) | Co-Chair | 
| 2018 (3rd) | Organizer | 
| Year | Role | 
|---|---|
| 2020 | Reviewer | 
| 2021 | Reviewer | 
| 2022 | Reviewer | 
| Year | Role | 
|---|---|
| 2021 | Reviewer | 
| Year | Role | 
|---|---|
| 2020 | Reviewer | 
| 2021 | Reviewer | 
| 2022 | Reviewer | 
| 2024 | Reviewer | 
| Year | Role | 
|---|---|
| 2021 (4th) | Workshop Co-Chair | 
| Year | Role | 
|---|---|
| 2009 (2nd) | Program Committee Member | 
| 2010 (3rd) | Program Committee Member | 
| Year | Role | 
|---|---|
| 2013 (2nd) | Program Committee Member | 
| 2015 (3nd) | Reviewer | 
| Year | Role | 
|---|---|
| 2009 (3rd) | Program Committee Member | 
| 2010 (4th) | Reviewer | 
| Year | Role | 
|---|---|
| 2017 (1st) | Program Committee Member | 
| 2019 (2nd) | Program Committee Member | 
| Year | Role | 
|---|---|
| 2008 | Program Committee Member | 
| Year | Role | 
|---|---|
| 2010 (2nd) | Program Co-Chair | 
| Year | Role | 
|---|---|
| 2016 (1st) | Program Committee Member | 
| Year | Role | 
|---|---|
| 2017 (1st) | Program Committee Member | 
| Year | Role | 
|---|---|
| 2020 (26th) | Program Committee Member | 
| 2021 (27th) | Program Committee Member | 
| 2022 (28th) | Program Committee Member | 
| 2022 (28th) | Program Committee Member | 
| 2023 (29th) | Program Committee Member | 
| 2024 (30th) | Program Committee Member | 
| Name | Role | 
|---|---|
| Editorial Committee of the Journal at The Information and Systems Society (ISS) | Reviewer (Aug. 6, 2010 -)  | 
  
| Editorial Committee of IEICE Transactions on Information and Systems (English Journal) | Associate Editor (June 2017 - June 2021)  | 
  
| Associate Editor-in-Chief (June 2021 - June 2023)  | 
  |
| Special Issue on Image Recognition and Understanding in IEICE Transactions on Information and Systems (Japanese Journal) | Committee Member (Editor) (2010, 2011, 2017, 2018)  | 
  Secretary (2012)  | 
  
| Special Interest Group of Pattern Recognition and Media Understanding (PRMU) | Committee Member (May 2017 - May 2024)  | 
  Vice Co-Chair (May 2020 - May 2022)  | 
  
| Name | Role | 
|---|---|
| Special Interest Group on Computer Vision and Image Media (CVIM) | Steering Committee Member (April, 2008 - March, 2012)  | 
  
| Name | Role | 
|---|---|
| SIG Accessible Interface | Steering Committee Member (April, 2021 -)  | 
  
| Year | Role | 
|---|---|
| 2010 (13th) | Program Committee Member (Area Chair) | 
| 2011 (14th) | Program Committee Member (Area Chair) | 
| 2012 (15th) | Program Vice-Chair | 
| 2013 (16th) | Conference Editorial Board (CEB) Technical Program Committee (TPC) member | 
| 2014 (17th) | Program Vice-Chair | 
| 2015 (18th) | Conference Editorial Board (CEB) Technical Program Committee (TPC) member | 
| 2016 (19th) | Conference Editorial Board (CEB) Technical Program Committee (TPC) member | 
| 2017 (20th) | MIRU Conference Editorial Board (CEB) Area Chair | 
| 2018 (21st) | Area Chair | 
| 2019 (22nd) | Interactive and Demo Chair & Area Chair | 
| 2020 (23th) | Paper evaluator | 
| 2021 (24th) | Program Chair | 
| 2022 (25th) | Program Chair | 
| 2023 (26th) | Evaluator | 
| 2024 (27th) | Evaluator | 
| 2025 (28th) | Award Selection Committee Member & Evaluator | 
| Year | Role | 
|---|---|
| 2006 (9th) | Organizing Committee Member | 
| Year | Section | Role | 
|---|---|---|
| 2009 (15th) | Interactive & Oral Session Section | Committee Member | 
| 2010 (16th) | Interactive Session Section | Reviewer | 
| 2011 (17th) | Interactive Session Section | Area Chair & Reviewer for "AR, Object recognition and image/video processing" Session | 
| 2012 (18th) | Interactive Session Section | Reviewer | 
| 2013 (19th) | Interactive Session Section | Reviewer | 
| 2020 (26th) | Interactive Session Award Committee | Reviewer | 
| 2021 (27th) | Interactive Session Award Committee | Reviewer | 
| Year | Section | Role | 
|---|---|---|
| 2023 (22nd) | Program Committee | Local Executive Vice Chair | 
| Year | Role | |
|---|---|---|
| 2004 (8th) | 「複数の写真からパノラマ写真を作ろう −画像のモザイキング −」 | Organizing Committee Member | 
| 2008 (12th) | 「騎士(ナイト)を数えナイト 〜画像に含まれる特定物体の計数〜」 | Organizing Committee Member | 
| 2009 (13th) | 「クローンを探せ!」 | Organizing Committee Member | 
| 2017 (21st) | 「この文字読めますか? 〜くずし字認識にチャレンジ!〜」 | Reviewer |