Hiroyuki Okuhata

36 papers A 2B 2C 4Misc 1Journal 7Unranked 20
YearRankTypeTitle / Venue / Authors
2021 — conf
Testing Environment for Developing a Wireless Networking System based on Image-assisted Routing for Sports Applications.
icSPORTS
Shiho Hanashiro, Junfeng Xue, Junya Morioka, Ryusuke Miyamoto, Takuma Hamagami, Kentaro Yanagihara, Yasutaka Kawamoto, Hiroyuki Okuhata, Hiroyuki Yomo, Tomohito Takubo
2020 — conf
An Adaptive Superframe Change in a Wireless Vital Sensor Network for a Group of Outdoor Exercisers.
VTC Fall
Shinsuke Hara, Takuma Hamagami, Yasutaka Kawamoto, Hiroyuki Yomo, Ryusuke Miyamoto, Hiroyuki Okuhata
2020 J jnl
Performance Prediction of Wireless Vital Data Collection System for Exercisers by a Network Simulator.
IEICE Trans. Commun.
Takuma Hamagami, Shinsuke Hara, Hiroyuki Yomo, Ryusuke Miyamoto, Yasutaka Kawamoto, Takunori Shimazaki, Hiroyuki Okuhata
2020 — conf
Summary of Experimental Results on Accurate Wireless Sensing System for a Group of Exercisers Spread in an Outdoor Ground.
ISMICT
Takuma Hamagami, Shinsuke Hara, Yasutaka Kawamoto, Hiroyuki Yomo, Ryusuke Miyamoto, Hiroyuki Okuhata
2019 — conf
A Real-time Vital Data Collection System for a Group of Persons during a Variety of Sporting Activities in a Large Outdoor Ground.
icSPORTS
Shinsuke Hara, Takunori Shimazaki, Takuma Hamagami, Yasutaka Kawamoto, Hiroyuki Yomo, Ryusuke Miyamoto, Hiroyuki Okuhata, Fumie Ono
2019 J jnl
An Architecture for Real-Time Retinex-Based Image Enhancement and Haze Removal and Its FPGA Implementation.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Dabwitso Kasauka, Kenta Sugiyama, Hiroshi Tsutsui, Hiroyuki Okuhata, Yoshikazu Miyanaga
2018 B conf
AccuWiSe: Accurate Wireless Vital Sensing System for a Group of Exercisers - Hardware Configuration.
CHASE
Shinsuke Hara, Takuma Hamagami, Yasutaka Kawamoto, Hiroyuki Yomo, Ryusuke Miyamoto, Takunori Shimazaki, Hiroyuki Okuhata, Fumie Ono, Kenichi Takizawa
2018 B conf
AccuWiSe: Accurate Wireless Vital Sensing System for a Group of Exercisers - System Performance.
CHASE
Takuma Hamagami, Yasutaka Kawamoto, Shinsuke Hara, Hiroyuki Yomo, Ryusuke Miyamoto, Takunori Shimazaki, Hiroyuki Okuhata, Fumie Ono, Kenichi Takizawa
2018 C conf
Wireless Multi-Hop Networking for a Group of Exercisers Spread in a Sports Ground.
HealthCom
Takuma Hamagami, Yasutaka Kawamoto, Shinsuke Hara, Hiroyuki Yomo, Ryusuke Miyamoto, Takunori Shimazaki, Hiroyuki Okuhata
2017 — conf
An energy-efficient task sharing in a wireless vital data collection system.
ECCTD
Takunori Shimazaki, Masaya Kimoto, Shinsuke Hara, Hiroyuki Okuhata
2017 J jnl
Challenges in Real-Time Vital Signs Monitoring for Persons During Exercises.
Int. J. Wirel. Inf. Networks
Shinsuke Hara, Hiroyuki Yomo, Ryusuke Miyamoto, Yasutaka Kawamoto, Hiroyuki Okuhata, Takashi Kawabata, Hajime Nakamura
2017 — conf
Parameter optimization of motion artifact canceling PPG-based heart rate sensor by means of cross validation.
ISMICT
Shinsuke Hara, Takunori Shimazaki, Hiroyuki Okuhata, Hajime Nakamura, Takashi Kawabata, Kai Cai, Tomohito Takubo
2016 — conf
A real-time vital sensing system for persons during exercises.
ICCE-Berlin
Shinsuke Hara, Takunori Shimazaki, Hiroyuki Okuhata, Isao Shirakawa, Hiroyuki Yomo
2016 — conf
Image smoothing in the spatial domain using multigrid conjugate gradient methods based on accelerated iterative shrinkage.
APSIPA
Dabwitso Kasauka, Hiroshi Tsutsui, Seijiro Imai, Takashi Imagawa, Hiroyuki Okuhata, Yoshikazu Miyanaga
2016 — conf
Processing time reduction of tone mapping based on iterative shrinkage smoothing using parallel processing.
ISPACS
Seijiro Imai, Dabwitso Kasauka, Hiroshi Tsutsui, Takashi Imagawa, Hiroyuki Okuhata, Yoshikazu Miyanaga
2016 J jnl
Real-Time Vital Monitoring for Persons during Exercises - Solutions and Challenges -.
IEICE Trans. Commun.
Shinsuke Hara, Hiroyuki Okuhata, Takashi Kawabata, Hajime Nakamura, Hiroyuki Yomo
2015 — conf
Image smoothing using spatial iterative methods based on accelerated iterative shrinkage.
APSIPA
Dabwitso Kasauka, Hiroshi Tsutsui, Hiroyuki Okuhata, Takashi Imagawa, Yoshikazu Miyanaga
2015 — conf
Motion artifact cancellation and outlier rejection for clip-type ppg-based heart rate sensor.
EMBC
Takunori Shimazaki, Shinsuke Hara, Hiroyuki Okuhata, Hajime Nakamura, Takashi Kawabata
2014 — conf
Cancellation of motion artifact induced by exercise for PPG-based heart rate sensing.
EMBC
Takunori Shimazaki, Shinsuke Hara, Hiroyuki Okuhata, Hajime Nakamura, Takashi Kawabata
2014 — conf
Computational cost analysis and implementation of accelerated iterative shrinkage smoothing.
APSIPA
Dabwitso Kasauka, Hiroshi Tsutsui, Hiroyuki Okuhata, Yoshikazu Miyanaga
2014 C conf
Elements of a real-time vital signs monitoring system for players during a football game.
Healthcom
Shinsuke Hara, Tetsuo Tsujioka, Takunori Shimazaki, Kouhei Tezuka, Masayuki Ichikawa, Masato Ariga, Hajime Nakamura, Takashi Kawabata, Kenji Watanabe, Masanao Ise, Noa Arime, Hiroyuki Okuhata
2014 C conf
Implementation of dynamic-range enhancement and super-resolution algorithms for medical image processing.
ICCE
Hiroyuki Okuhata, Rintaro Imai, Masanao Ise, Roberto Yusi Omaki, Hajime Nakamura, Shinsuke Hara, Isao Shirakawa
2014 — conf
Performance evaluation of packet forwarding methods in real-time vital data collection for players during a football game.
ISMICT
Shinsuke Hara, Kouhei Tezuka, Tetsuo Tsujioka, Hajime Nakamura, Takashi Kawabata, Kenji Watanabe, Masanao Ise, Noa Arime, Hiroyuki Okuhata
2013 — conf
Application of the real-time Retinex image enhancement for endoscopic images.
EMBC
Hiroyuki Okuhata, Hajime Nakamura, Shinsuke Hara, Hiroshi Tsutsui, Takao Onoye
2013 C conf
Development of a real-time vital data collection system from players during a football game.
Healthcom
Shinsuke Hara, Tetsuo Tsujioka, Toui Kanda, Hajime Nakamura, Takashi Kawabata, Kenji Watanabe, Masanao Ise, Noa Arime, Hiroyuki Okuhata
2013 — conf
Implementation of super-resolution scaler for Full HD and 4K video.
ICCE-Berlin
Hiroyuki Okuhata, Masanao Ise, Roberto Yusi Omaki, Isao Shirakawa
2012 — conf
Halo artifacts reduction method for variational based realtime retinex image enhancement.
APSIPA
Hiroshi Tsutsui, Satoshi Yoshikawa, Hiroyuki Okuhata, Takao Onoye
2005 J jnl
Design of Ogg Vorbis Decoder System for Embedded Platform.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Atsushi Kosaka, Hiroyuki Okuhata, Takao Onoye, Isao Shirakawa
2004 — conf
SoC design of Ogg Vorbis decoder using embedded processor.
Conf. Computing Frontiers
Atsushi Kosaka, Satoshi Yamaguchi, Hiroyuki Okuhata, Takao Onoye, Isao Shirakawa
1998 Misc conf
A low-power DSP core architecture for low bitrate speech codec.
ICASSP
Hiroyuki Okuhata, Morgan Hirosuke Miki, Takao Onoye, Isao Shirakawa
1998 — conf
Implementation of H.324 audiovisual codec for mobile computing.
CICC
Gen Fujita, Hiroyuki Okuhata, Morgan Hirosuke Miki, Takao Onoye, Isao Shirakawa
1998 — conf
Low-Power Implementation of H.324 Audiovisual Codec Dedicated to Mobile Computing.
ASP-DAC
Takao Onoye, Gen Fujita, Hiroyuki Okuhata, Morgan Hirosuke Miki, Isao Shirakawa
1997 J jnl
A Low Power Receiver Architecture for 4 Mbps Infrared Wireless Communication.
J. Circuits Syst. Comput.
Hiroyuki Okuhata, Hiroshi Uno, Keiji Kumatani, Isao Shirakawa, Toru Chiba
1997 J jnl
ASK digital demodulation scheme for noise immune infrared data communication.
Wirel. Networks
Hiroshi Uno, Keiji Kumatani, Hiroyuki Okuhata, Isao Shirakawa, Toru Chiba
1997 A conf
An object code compression approach to embedded processors.
ISLPED
Yukihiro Yoshida, Bao-Yu Song, Hiroyuki Okuhata, Takao Onoye, Isao Shirakawa
1997 A conf
Low power architecture for high speed infrared wireless communication system.
ISLPED
Hiroshi Uno, Keiji Kumatani, Hiroyuki Okuhata, Isao Shirakawa, Toru Chiba