IWAI Masayuki

J-GLOBAL         Last updated: Mar 14, 2019 at 02:41
IWAI Masayuki
Tokyo Denki University
School of Science and Technology for Future Life Department of Information Systems and Multimedia Design
Job title
Associate Professor


Masayuki IWAI received his Ph.D. (Media and Governance, Keio University) in 2004. He was the lecturer at Keio University, Graduate School of Media and Governance until 2008. From 2008, he joined JST/CREST project at Tokyo Denki University. From 2009-2012, he has been an Assistant Professor at the University of Tokyo, Department of Informatics and Electronics, Institute of Industrial Science as a Research Assistant Professor. He works as an associate professor of Tokyo Denki Univeristy from 2013. His interesting research fields are Trajectory Sensing, SNS Context Analysing, Sensor Data Mining, Wireless Sensor Networks, Distributed/Mobile Computing, Ubiquitous Application, Human Probe System, Media Art. He is a member of IPSJ, IEICE and IEEE.

Research Areas


Academic & Professional Experience

Apr 2002
Mar 2004
Oct 2004
Mar 2008
Apr 2008
Mar 2009
Apr 2009
Mar 2013
Assistant Professor


Apr 1996
Mar 2000
Graduate School, Division of American Culture, Keio University
Apr 2000
Mar 2002
Keio University
Apr 2002
Sep 2004
Keio University

Committee Memberships

Apr 2014

Published Papers

MM360: A GPS-assisted 360-degree video sharing system for participatory events
Naoya shibahara, Ryoma Kondo, Masayuki IWAI
3rd International Workshop on Smart Cities: IWSC 2017 on 2017 IEEE International Conference on Big D   4123-4127   Dec 2017   [Refereed]
Estimate a User’s Location Using Smartphone’s Barometer on a Subway
Satoshi Hyuga,Masaki Ito,Masayuki Iwai,Kaoru Sezaki
MELT 2015 (ACM SIGSPATIAL 2015)      Nov 2016
Knowing the location of a train is necessary to develop a useful service for train passengers. However, popular localization methods such as GPS and Wi-Fi are not accurate especially on a subway. As an alternative method, estimation of motion stat...
An Online Localization Method for a Subway Train Utilizing a Barometer on a Smartphone
Satoshi Hyuga, Masaki Ito, Masayuki Iwai and Kaoru Sezaki
24th ACM SIGSPATIAL   50:1-50:4   Oct 2016   [Refereed]
Knowing the location of a train is necessary for the development of useful services for train passengers. However, popular localization methods such as GPS and Wi-Fi are not accurate, especially on a subway. This paper proposes an online algorithm...
IEEE Communications Letters "Exploiting fountain codes for secure wireless delivery,"
Hao Niu, Masayuki Iwai, Kaoru Sezaki, Li Sun, and Qinghe Du,
IEEE Communications Letters   vol. 18(no. 5, pp. 777-780, May 2014.)    May 2014   [Refereed]
Dang, Congwei, Sezaki Kaoru,Iwai Masayuki
Seventh International Conference on Mobile Computing and Ubiquitous Networking (ICMU)   117-122   Jan 2014


A distributed system architecture for pedestrian flock detection with participatory sensing
Teemu , Leppanen JoseAlvarezLacasia Masayuki , Iwai Kaoru , Sezaki Yoshito , Tobe Jukka , Riekki
2013-MBL-65(40) 1 - 7   Mar 2013
We present distributed system architecture for smartphone-based participatory sensing applications, where the computational load is distributed between the participating devices. The system allows using of static data to reduce the computational l...
What Does Chirping Tell Us? Summarizing People's Opinion on Ongoing Events Using Tweets
Khan Muhammad Asif Hossain・Guangwen Liu・Masayuki Iwai・Sezaki kaoru
pp.107-112   Mar 2013
We propose a set of algorithms for filtering out tweets relevant to any ongoing event, which can serve as a real-time summary about people’s opinion regarding the event. Evaluation conducted on a real-world dataset shows that the proposed model co...
Improving the Secrecy Performance of Cooperative Networks via Adaptive Transmission and Multiuser Diversity
Hao Niu・Masayuki Iwai・Kaoru Sezaki
SR AN USN RCS 研究会   信学技報, vol. 112(no. 239, RCS2012-160, pp. 201-)    Oct 2012
Analyzing System of Costumers' Attention using Tiny Sensor Nodes
2008(18), 173-177, 2008-02-27    Feb 2008

Conference Activities & Talks

Teemu Leppanen, Jukka Riekki, Masayuki Iwai and Kaoru Sezaki
2013 IEICE General Conference   Mar 2013   
We present lightweight RESTful approach enabling cyber foraging applications, based on continuations as the dynamic computational tasks and a resource directory for surrogate lookups. This approach distributes computational load among surrogates a...
Shunsuke Aoki, Masayuki IWAI, Kaoru Sezaki
May 2013   
To promote use of participatory sensing, the protection of privacy is important to consider because the system aggregates data sets from each smartphone which is closely related with participants. In this paper, we present negative surveys with st...
Dang Congwei,Iwai Masayuki,Sezaki Kaoru
ソサイエティ大会講演論文集   17 Sep 2013   電子情報通信学会
Weather Sensing in Heterogeneous Network Where Mobile Sensors and Fixed Sensors Coexist
Guangwen Liu, Masayuki Iwai, Masaki Ito and Kaoru Sezaki
2014 IEICE General Conference   Mar 2014   IEICE
Air Freshness Sensing System using Smart Phones
The 1st International Workshop on Service Oriented Smart Cities (SOSC)   17 Nov 2014   


SXSW TradeShow
CPS lab   Artistic Activity   Mar 2015 - Mar 2015
We propose a new small marine sensing ball that has been specifically designed to provide 360 panorama photo, 360 panorama movie, location information and sea temperature over Wi-Fi. We visualize invisible underwater world and share those beautifu...