Takayuki Nakachi

J-GLOBAL         Last updated: Jan 18, 2020 at 23:44
 
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Name
Takayuki Nakachi
E-mail
takayuki.nakachiieee.org
Affiliation
Nippon Telegraph and Telephone Corporation (NTT)
Section
NTT Network Innovation Laboratories
Degree
Ph. D.(Keio University)

Profile

Takayuki Nakachi 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, media transport technologies. From 2006 to 2007, he was a visiting scientist at Stanford University. He also actively participates in MPEG international standardization. His current research interests include sparse modeling, communication science, information theory and signal processing. He received the 26th TELECOM System Technology Award, the 6th Paper Award of Journal of Signal Processing and the Best Paper Award of IEEE ISPACS2015. 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 Areas

 
 

Committee Memberships

 
May 2018
 - 
Today
Chair, IEICE Technical Committee on Smart Info-Media Systems (SIS)
 
2017
 - 
2018
Local Arrangement Chair, IEEE ISPACS2018
 
2016
 - 
2019
Industry & Exhibition Co-Chair, IEEE ISCAS2019
 
May 2015
 - 
Today
Technical Committee, IEICE Technical Committee on Information Theory (IT)
 
2010
 - 
Today
International Steering Committee, IEEE ISPACS
 
May 2014
 - 
Apr 2018
Vice-Chair, IEICE Technical Committee on Smart Info-Media Systems (SIS)
 
2015
   
 
Technical Program Chair, IEICE SISA 2015
 
2015
 - 
2016
Editor in Chief, Special Section on Smart Multimedia & Communication Systems, IEICE Transactions
 
Jan 2013
 - 
Dec 2014
Treasure, IEEE SPS JC (Signal Processing Society Japan Chapter)
 
May 2005
 - 
Apr 2012
Technical Committee, IEICE Technical Committee on Signal Processing (SIP)
 
2012
   
 
Technical Program Chair, IEICE ITC-CSCC 2012
 
May 2009
 - 
Apr 2010
Associate Editor, IEICE Fundamentals Review
 
May 2005
 - 
Apr 2009
Associate Editor, IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
 
2009
   
 
Finance Chair, IEICE ITC-CSCC 2009
 
May 2003
 - 
Apr 2005
Secretary, IEICE Technical Committee on Digital Signal Processing (DSP)
 
May 2001
 - 
Apr 2003
Technical Committee, IEICE Technical Committee on Digital Signal Processing (DSP)
 

Awards & Honors

 
Nov 2015
Best Paper Award, IEEE ISPACS2015
 
Jan 2015
Appreciation Certificate "2013-2014 Treasurer, SPS Japan Chapter", IEEE SPS (Signal Processing Society)
 
Mar 2012
Best Paper Award, Research Institute of Signal Processing
 
Mar 2011
26th Telecommunications Advancement Foundation Award, The Telecommunications Advancement Foundation
 

Published Papers

 
Takayuki Nakachi, Yukihiro Bandoh, Hitoshi Kiya
IEICE Transactions on Information and Systems (open access publishing)      Jan 2020   [Refereed]
Takahiro Maekawa, Ayana Kawamura, Takayuki Nakachi, Hitoshi Kiya
IEICE Transactions on Fundamentals   E102-A(12) 1849-1855   Dec 2019   [Refereed]
Takayuki Nakachi, Hitoshi Kiya
IEEE ICSPCS2019      Dec 2019   [Refereed]
Yitu Wang, Takayuki Nakachi, Hiroyuki Ishihara
27th European Signal Processing Conference (EUSIPCO 2019)      Sep 2019   [Refereed]
Takayuki Nakachi, Yukihiro Bandoh, Hitoshi Kiya
27th European Signal Processing Conference (EUSIPCO 2019)      Sep 2019   [Refereed]
Yasuhiro Mochida, Takayuki Nakachi, Takahiro Yamaguchi, Takayuki Onishi, Ken Nakamura
IEEE ISCAS2019      May 2019   [Refereed]
Takayuki Nakachi, Hitoshi Kiya
JOIG ICFIP2019      Mar 2019   [Refereed]
Takayuki Nakach, Hiroyuki Ishihara, Hitoshi Kiya
IEEE ICSPCS2018      Dec 2018   [Refereed]
Takahiro Maekawa, Takayuki Nakachi, Sayaka Shiota and Hitoshi Kiya
IEEE ISPACS2018      Nov 2018   [Refereed]
Takayuki Nakachi, Hitoshi Kiya
ACM IHIP2018      Sep 2018   [Refereed]
Hiroyuki Ishihara, Takayuki Nakachi, Masanori Ogawara, Takahiro Yamaguchi
Springer ECCV2018      Sep 2018   [Refereed]
Takayuki Nakachi, Yasuhiro Mochida, Takahiro Yamaguchi
TVX-in-Industry, ACM TVX2018      Jun 2018   [Refereed]
Takayuki Nakachi, Shinya Ishihara
IEEE ISPACS2017      Nov 2017   [Refereed]
Takayuki Nakachi, Tatsuya Fujii
IEEE ISPACS2016      Oct 2016   [Refereed]
Takayuki Nakachi, Masahiko Kitamura, Tatsuya Fujii
SISA2016   242-247   Sep 2016   [Refereed][Invited]
Yui Yoshida, Takayuki Nakachi, Daisuke Shirai and Tatsuya Fujii
IEEE ICC2016      May 2016   [Refereed]
Takayuki Nakachi, Tatsuya Fujii
IEEE ISPACS2015   652-657   Nov 2015   [Refereed]
Takayuki Nakachi, Yoshihide Tonomura, Daisuke Shirai, Takahiro Yamaguchi and Tatsuya Fujii
IEEE ICME2015      Jun 2015   [Refereed]
Katsuya Suto, Hiroki Nishiyama, Nei Kato, Takayuki Nakachi, Toshikazu Sakano, and Atsushi Takahara
IEEE VTC2015   5   May 2015   [Refereed]
Takayuki Nakachi, Atsushi, Tatsuya Fujii
IEEE ISPACS2014   324-329   Dec 2014   [Refereed]

Misc

 
Yitu Wang and Takayuki Nakachi
NTT Technical Review   (9)    Sep 2019
Takayuki Nakachi
IEICE ESS Fundamentals Review   11(4) 288-301   Apr 2018   [Refereed][Invited]
Takayuki Nakachi
Journal of Information Processing(JIP)   58(2) 112-115   Jan 2017   [Refereed][Invited]
Takayuki Nakachi
The Motion Picture and Telivision Engneering   (759) 99-101   Nov 2015   [Invited]
Takayuki Nakachi
The journal of the Institute of Image Information and Television Engineers   69(7) 757-759   Sep 2015   [Invited]
Takayuki Nakachi, Sun Yong Kim, Atsushi Okada, Tatsuya Fujii
NTT Technical Review   13(5) 1-6   May 2015
Takayuki Nakachi, Sun Yong Kim, Atsushi Okada, Tatsuya Fujii
NTT Technical Journal   25-28   Mar 2015   [Invited]
FORN   FORN - 2014(7) 22-25   Jul 2014   [Invited]
Takayuki Nakachi, Takahiro Yamaguchi, Yoshihide Tonomura, Tatsuya Fujii
NTT Technical Review   12(5)    May 2014
Takayuki Nakachi, Takahiro Yamaguchi, Yoshihide Tonomura, Tatsuya Fujii
NTT Technical Journal   63-67   Feb 2014   [Invited]
Kazuo Sugimoto, Takayuki Nakachi, Keiich Chono
The journal of the Institute of Image Information and Television Engineers   61(4) 43-46   Feb 2008   [Invited]
Takayuki Nakachi, Tetsuro Fujii
Journal of Signal Processing   9(3)    2005   [Invited]

Conference Activities & Talks

 
Takayuki Nakachi
Graduate School of Engineering and Science, University of the Ryukyus   7 Aug 2019   
Takayuki Nakachi
IEICE Conference of Technical Committee on Network Virtualization (NV)   16 May 2019   
Takayuki Nakachi
IEICE SISA2018   Sep 2018   
Takayuki Nakachi
The Vail Computer Elements Workshop (VCEW 2018) at Vail, Colorado   25 Jun 2018   
Takayuki Nakachi
Keio University Graduate School of Media Design   Dec 2017   
Takayuki Nakachi
IEEE ICDV 2017 ( in Hanoi)   5 Oct 2017   
Takayuki Nakachi
ACM TVX2017 (in Hilversum)   14 Jun 2017   
Takayuki Nakachi
Keio University Graduate School of Media Design   Dec 2016   
[Invited Talk] MMT AL-FEC Codes and Its Application to Immersive Tele-Presence Service [Invited]
Takayuki Nakachi
ISO/IEC MPEG 4th MMT Developers’ Day (in Chengdu)   12 Oct 2016   
Takayuki Nakachi
ACM TVX Asia Forum 2016 (in Chicago)   22 Jun 2016   
Takayuki Nakachi
Keio University Graduate School of Media Design   Oct 2015   
Takayuki Nakachi
19th Kansai Univ. ORDIST Symposium   Jan 2015   
[Special Lecture] Next-generation Media Transport and MMT International Standard [Invited]
Takayuki Nakachi
Yokohama National University, Graduate School   Dec 2014   
Takayuki Nakachi
Keio University Graduate School of Media Design   Oct 2014   
Takayuki Nakachi
IEICE/IPSJ FIT2014   3 Sep 2014   
[Special Lecture] Next-generation Media Transport Standard MMT and Recent Progress [Invited]
Takayuki Nakachi
Tokyo Denki University, Undergraduate Schools   May 2014   
Takayuki Nakachi
Keio University Graduate School of Media Design   Dec 2013   
Takayuki Nakachi
The 26th Communication Systems Workshop   Nov 2013   
Takayuki Nakachi
IEICE Technical Report IT2012-100   Mar 2013   
Takayuki Nakachi
The 75th National Convention of IPSJ   Mar 2013   
Takayuki Nakachi
ITE Technical Report   Aug 2012   
Takayuki Nakachi
IEICE Technical Report SIS2011-13   Jun 2011   
Takayuki Nakachi
IEICE General Conference   Mar 2011   
Takayuki Nakachi, Tatsuya Fujii
ITE/SID International Display Workshop‘09   Nov 2009   
Takayuki Nakachi
IEICE Technical Report SIS2005-12   Jun 2005   

Works

 
ISO/IEC TR 23008-13:2017, Information technology -- High efficiency coding and media delivery in heterogeneous environments -- Part 13: MPEG media transport implementation guidelines
2017 - Today
ISO/IEC 23008-10:2015, Information technology -- High efficiency coding and media delivery in heterogeneous environments -- Part 10: MPEG media transport forward error correction (FEC) codes
2015 - Today
ISO/IEC 23008-1:2017, Information technology -- High efficiency coding and media delivery in heterogeneous environments -- Part 1: MPEG media transport (MMT)
2014 - Today
ISO/IEC JTC1/SC29/WG11 MPEG m38094, "FF-LDGM Codes for CE on MMT Adaptive AL-FEC," Feb. 2016, San Diego USA
Takayuki Nakachi, Masahiko Kitamura, Tatsuya Fujii,   Feb 2016
ISO/IEC JTC1/SC29/WG11 MPEG m24019, ”MMT: NTT FEC Code Complexity,” Jan. 2013, Geneva Switzerland
Takayuki Nakachi, Yoshihide Tonomura, Daisuke Shirai, Tatsuya Fujii,   Artistic Activity   Jan 2013
ISO/IEC JTC1/SC29/WG11 MPEG m28321, ”MMT: NTT FEC Code Performance,” Jan. 2013, Geneva Switzerland.
Takayuki Nakachi, Yoshihide Tonomura, Daisuke Shirai, Tatsuya Fujii   2013
ISO/IEC JTC1/SC29/WG11 MPEG m28345, ” MMT: NTT FEC Code Specification,” Jan. 2013, Geneva Switzerland.
Takayuki Nakachi, Yoshihide Tonomura, Daisuke Shirai, Tatsuya Fujii   Jan 2013
ISO/IEC JTC1/SC29/WG11 MPEG m27026, ”MMT D1-FEC: NTT LDGM Performance for MMT,” Oct. 2012, Shanghai CN
Takayuki Nakachi, Yoshihide Tonomura, Daisuke Shirai, Tatsuya Fujii   Oct 2012
ISO/IEC JTC1/SC29/WG11 MPEG m26378, ”MMT D1-FEC: Layered LDGM Codes for MMT,” Oct. 2012, Shanghai CN
Takayuki Nakachi, Yoshihide Tonomura, Daisuke Shirai, Tatsuya Fujii   Oct 2012
ISO/IEC JTC1/SC29/WG11 MPEG m24019, ”NTT AL-FEC Performance on D1-FEC CE,” Apr. 2012, Geneva Switzerland
TaTakayuki Nakachi, Yoshihide Tonomura, Daisuke Shirai, Tatsuya Fujii   Apr 2012

Patents

 
US9264736 B2 : Encoding Method, Decoding Method, Encoding Device, and Decoding Device
Takayuki Nakachi, Tomoko Sawabe, Tetsuro Fujii

Others

 
Feb 2020   Takayuki Nakachi, Yitu Wang, "An Estimation of Network Traffic Validation using Sparse Coding", IEICE Technical Report, CS, Feb. 2020.
Nov 2019   Takayuki Nakachi, Yitu Wang, "A Face Recognition Method using Secure Sparse Coding with Ensemble Learning," IEICE SITA2019, Nov. 2019.
Oct 2019   Takayuki Nakachi, Yitu Wang, Tetsuro Inui, Takafumi Tanaka, Takahiro Yamaguchi, Katsuhiro Shimano,"Intelligent Monitoring of Optical Fiber Transmitter Using Sparse Coding", IEICE Technical Report, OCS, Oct. 2019.
Oct 2019   Takayuki Nakachi, Hithoshi Kiya, ”Image Compression in Encryption-then-Compression System Using Secure Sparse Representations," IEICE Technical Report, SIS, Oct. 2019.
Sep 2019   Takayuki Nakachi, Hithoshi Kiya, ”Secure Sparse Representations in L0 Norm Minimization," IEICE Technical Report, EMM, Sep. 2019.
Jun 2019   Yitu Wang, Takayuki Nakachi, "Privacy Preserving Sparse Representation for Face Recognition in Edge and Cloud Networks," IEICE Technical Report, vol. 119, no. 78, SIS2019-4, pp. 17-22, June 2019.
May 2019   Yasuhiro Mochida, Takayuki Nakachi, Takahiro Yamaguchi, "Development and Evaluation of an MMT Module for 4k/120p Temporal-scalable Video Transmission," IEICE Tech. Rep., vol. 118, no. 503, CQ2018-117, pp. 135-140, March 2019.
Mar 2019   Takayuki Nakachi, Hitoshi Kiya, “Image Patch Modeling using Secure Computation of Sparse Dictionary Learning," IEICE Tech. Rep., vol. 118, no. 494, EMM2018-115, pp. 129-134, March 2019.
Feb 2019   Takayuki Nakachi, Hitoshi Kiya, "Encrypted Image Classification by Using Secure OMP Computation," IEICE Tech. Rep., vol. 118, no. 450, IE2018-105, pp. 227-232, Feb. 2019.
Sep 2018   Takayuki Nakachi, Yasuhiro Mochida, Takahiro Yamaguchi, "MMT AL-FEC Codes and Its Application to 60Hz/120Hz Temporal Layer Bit-stream," IEICE Tech. Rep., vol. 118, no. 205, IT2018-29, pp. 13-18, Sept. 2018.
Sep 2018   Takayuki Nakachi, Hitoshi Kiya, "Image Patch Modeling in Encrypted Domain using Sparse Coding," IEICE Tech. Rep., vol. 118, no. 224, EMM2018-51, pp. 13-18, Sept. 2018.
Jun 2018   Takayuki Nakachi, Hitoshi Kiya, "Secure Computation of Sparse Coding for Privacy Protection," IEICE Tech. Rep., vol. 118, no. 73, SIS2018-2, pp. 7-12, June 2018.
Jun 2018   Takayuki Nakach, Hiroyuki Ishihara, Hitoshi Kiya, "Decoding Covert Spatial Attention using Privacy-preserving Sparse Coding," IEICE Tech. Rep., vol. 118, no. 80, NC2018-8, pp. 15-20, June 2018.
May 2018   Hiroyuki Ishihara, Takayuki Nakachi, Masanori Ogawara, Takahiro Yamaguchi, "Object-wise 3D Social Saliency from Multiple Egocentric Videos," IEICE Tech. Rep., vol. 118, no. 49, HCS2018-2, pp. 7-10, May 2018.