

Takayuki Nakachi
(仲地 孝之)Profile Information
- Affiliation
- Professor, Information Technology Center, University of the Ryukyus
- (Concurrent)Professor, Graduate School of Engineering and Science, Computer Science and Intelligent Systems
- (Concurrent)Professor, Graduate School of Engineering and Science, Interdisciplinary Intelligent Systems Engineering Course
- Degree
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Ph. D.(Mar, 1997, Keio University)
- Contact information
- takayuki.nakachi
ieee.org
- Researcher number
- 00628472
- ORCID iD
https://orcid.org/0000-0002-7970-454X
- J-GLOBAL ID
- 201401089078901003
- researchmap Member ID
- B000241034
Dr. Takayuki Nakachi is a Professor of the Information Technology Center in University of the Ryukyus. He received the Ph.D. degree in electrical engineering from Keio University, Tokyo, Japan, in 1997. Since he joined Nippon Telegraph and Telephone Corporation (NTT) in 1997, he has been engaged in research on super-high-definition image/video coding, and media transport technologies. His current research interests include secure and light-weight AI technologies based on sparse modeling and gaussian processes. From 2006 to 2007, he was a visiting scientist at Stanford University. He also actively participates in MPEG international standardization. He received the 26th TELECOM System Technology Award, the 6th Paper Award of Journal of Signal Processing, the Best Paper Award of IEEE ISPACS2015, the Best Presentation Award of IEEE WSCE 2023, and the Best Presentation Award of ACM ICAAI 2024. Dr. Nakachi is a member of the Institute of Electrical and Electronics Engineers the Institute of Electronics (IEEE) and the Information and Communication Engineers (IEICE) of Japan.
Research Interests
10Research Areas
3Research History
5-
Apr, 2021 - Present
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Apr, 1997 - Mar, 2021
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Sep, 2006 - Aug, 2007
Committee Memberships
27-
Jan, 2025 - Present
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Jun, 2022 - Present
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Jun, 2020 - Present
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Jan, 2023 - Dec, 2024
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Jun, 2023 - May, 2024
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Jun, 2021 - May, 2023
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Jan, 2010 - Dec, 2022
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2021 - 2022
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May, 2015 - May, 2021
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May, 2018 - May, 2020
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2016 - 2019
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May, 2014 - Apr, 2018
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2017 - 2018
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Jan, 2013 - Dec, 2014
Awards
13Papers
143-
IEEE International Conference on Electron Devices and Solid-State Circuits (EDSSC2025), Jun, 2025 Peer-reviewed
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IEEE International Conference on Electron Devices and Solid-State Circuits (EDSSC2025), Jun, 2025 Peer-reviewed
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IEEE International Conference on Electron Devices and Solid-State Circuits (EDSSC2025), Jun, 2025 Peer-reviewed
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International Conference on Cryptography, Security and Privacy (CSP 2025), Apr, 2025 Peer-reviewedLast authorCorresponding author
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International Journal of Advanced Computer Science and Applications (IJACSA), 16(3), Mar, 2025 Peer-reviewedLead authorCorresponding author
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IEEE Transactions on Vehicular Technology, 74(3) 4132-4147, Mar, 2025 Peer-reviewed
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IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences (Special Section on Smart Multimedia & Communication Systems), E108-A(3), Mar, 2025 Peer-reviewed
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IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences (Special Section on Smart Multimedia & Communication Systems), E108-A(3), Mar, 2025 Peer-reviewedLast authorCorresponding author
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International Journal of Advanced Computer Science and Applications, 16(2), Feb, 2025 Peer-reviewedLast authorCorresponding author
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IEEE Internet of Things Journal, Feb, 2025 Peer-reviewed
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IEICE International Workshop on Smart Info-Media Systems in Asia (SISA2024), Dec, 2024 Peer-reviewedLast authorCorresponding author
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IEICE International Workshop on Smart Info-Media Systems in Asia (SISA2024), Dec, 2024 Peer-reviewedLast authorCorresponding author
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IEEE International Symposium on Intelligent Signal Processing and Communications Systems (ISPACS 2024), Dec, 2024 Peer-reviewedLead authorCorresponding author
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IEEE Internet of Things Journal, 11(23) 38425-38440, Dec, 2024 Peer-reviewed
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Twelfth International Symposium on Computing and Networking Workshops (CANDARW), Nov, 2024 Peer-reviewed
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Twelfth International Symposium on Computing and Networking Workshops (CANDARW), Nov, 2024 Peer-reviewed
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IEEE Internet of Things Journal, 11(21) 34296-34311, Nov, 2024 Peer-reviewed
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ACM International Conference on Advances in Artificial Intelligence (ICAAI 2024), Oct, 2024 Peer-reviewedLead authorCorresponding author
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IEEE International Conference on Information Communication and Signal Processing (ICICSP 2024), Sep, 2024 Peer-reviewedLast authorCorresponding author
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Proceedings of the 11th IIAE International Conference on Intelligent Systems and Image Processing 2024 (ICISIP2024), Sep, 2024 Peer-reviewedLast authorCorresponding author
Misc.
15-
IEICE Fundamentals Review, 16(2) 100-114, Oct, 2022 Peer-reviewedInvitedLead author
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NTT R&D Website, Sep, 2020 Lead author
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Business Communication, Jun, 2020
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NTT Technical Review, (9), Sep, 2019 Peer-reviewedCorresponding author
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IEICE ESS Fundamentals Review, 11(4) 288-301, Apr, 2018 Peer-reviewedInvitedLead author
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Journal of Information Processing(JIP), 58(2) 112-115, Jan, 2017 Peer-reviewedInvitedLead author
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The Motion Picture and Television Engineering, (759) 99-101, Nov, 2015 InvitedLead author
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The journal of the Institute of Image Information and Television Engineers, 69(7) 757-759, Sep, 2015 InvitedLead author
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NTT Technical Review, 13(5) 1-6, May, 2015 InvitedLead author
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NTT Technical Journal, 25-28, Mar, 2015 InvitedLead author
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FORN, FORN - 2014(7) 22-25, Jul, 2014 InvitedLead author
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NTT Technical Review, 12(5), May, 2014 Lead author
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NTT Technical Journal, 63-67, Feb, 2014 InvitedLead author
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The journal of the Institute of Image Information and Television Engineers, 61(4) 43-46, Feb, 2008 InvitedLead author
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[Tutorial] NTT Network Innovation Laboratories Media Processing Systems Research Group (in Japanese)Journal of Signal Processing, 9(3), 2005 InvitedLead author
Books and Other Publications
2-
Science and Technology Publishing, 2001 (ISBN: 4876530386)
Presentations
42-
The 11th International Joint Conference on Convergence (IJCC 2025), Feb 12, 2025 Invited
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Visual Informatics Symposium at Institute of Informatics, Osaka Electro-Communication University, Mar 6, 2023 Invited
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JOHOKIKO, Jan 27, 2023 Invited
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3rd Plasma Informatics Workshop, Jan 16, 2023 Invited
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Technology Research Group for Information Technology Centers, Sep 21, 2022 Invited
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The 35th Workshop on Circuits and Systems, Aug 20, 2022 Invited
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International Technical Conference on Circuits/Systems, Computers, and Communications (ITC-CSCC2022), Jul 6, 2022 Invited
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LSI 2022 Design Contest in Okinawa, Mar 4, 2022 Invited
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IEICE Conference of Technical Committee on Enriched MultiMedia (EMM), May, 2021 Invited
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Graduate School of Engineering and Science, University of the Ryukyus, Aug 12, 2020 Invited
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Graduate School of Engineering and Science, University of the Ryukyus, Aug 7, 2019 Invited
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IEICE Conference of Technical Committee on Network Virtualization (NV), May 16, 2019 Invited
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IEICE SISA2018, Sep, 2018 Invited
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The Vail Computer Elements Workshop (VCEW 2018) at Vail, Colorado, Jun 25, 2018 Invited
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Keio University Graduate School of Media Design, Dec, 2017 Invited
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IEEE ICDV 2017 ( in Hanoi), Oct 5, 2017 Invited
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ACM TVX2017 (in Hilversum), Jun 14, 2017 Invited
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ITE/IEICE/IEEJ, Jan 10, 2017 Invited
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Keio University Graduate School of Media Design, Dec, 2016 Invited
Professional Memberships
2Works
12Research Projects
19-
CRONOS, Japan Science and Technology Agency(JST), Oct, 2024 - Mar, 2029
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National Institute of Informatics, Apr, 2024 - Mar, 2025
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Grants-in-Aid for Scientific Research (KAKEN), Japan Society for the Promotion of Science (JSPS), Apr, 2022 - Mar, 2025
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National Institute of Informatics, Apr, 2023 - Mar, 2024
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Jan, 2023 - Feb, 2024
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National Institute of Informatics, Apr, 2022 - Mar, 2023
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Beyond 5Gシーズ創出型プログラム及びBeyond 5G国際共同研究型プログラム, 国立研究開発法人情報通信研究機構(NICT), Nov, 2021 - Mar, 2023
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Jun, 2022 - Feb, 2023
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Jan, 2020 - Feb, 2021
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2019 - 2020
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2017 - 2019
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受託研究, 総務省, Apr, 2013 - Mar, 2014
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受託研究, 総務省, Apr, 2012 - Mar, 2013
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2011 - 2013
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2009 - 2011