Hiroyuki Okuhata

According to our database, Hiroyuki Okuhata authored at least 36 papers between 1997 and 2021.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of four.

2021

Testing Environment for Developing a Wireless Networking System based on Image-assisted Routing for Sports Applications.

Shiho Hanashiro, Junfeng Xue, Junya Morioka, Ryusuke Miyamoto, Takuma Hamagami, Kentaro Yanagihara, Yasutaka Kawamoto, Hiroyuki Okuhata, Hiroyuki Yomo, Tomohito Takubo

Proceedings of the 9th International Conference on Sport Sciences Research and Technology Support, 2021

2020

Performance Prediction of Wireless Vital Data Collection System for Exercisers by a Network Simulator.

Takuma Hamagami, Shinsuke Hara, Hiroyuki Yomo, Ryusuke Miyamoto, Yasutaka Kawamoto, Takunori Shimazaki, Hiroyuki Okuhata

IEICE Trans. Commun., 2020

An Adaptive Superframe Change in a Wireless Vital Sensor Network for a Group of Outdoor Exercisers.

Shinsuke Hara, Takuma Hamagami, Yasutaka Kawamoto, Hiroyuki Yomo, Ryusuke Miyamoto, Hiroyuki Okuhata

Proceedings of the 92nd IEEE Vehicular Technology Conference, 2020

Summary of Experimental Results on Accurate Wireless Sensing System for a Group of Exercisers Spread in an Outdoor Ground.

Takuma Hamagami, Shinsuke Hara, Yasutaka Kawamoto, Hiroyuki Yomo, Ryusuke Miyamoto, Hiroyuki Okuhata

Proceedings of the 14th International Symposium on Medical Information Communication Technology, 2020

2019

An Architecture for Real-Time Retinex-Based Image Enhancement and Haze Removal and Its FPGA Implementation.

Dabwitso Kasauka, Kenta Sugiyama, Hiroshi Tsutsui, Hiroyuki Okuhata, Yoshikazu Miyanaga

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2019

A Real-time Vital Data Collection System for a Group of Persons during a Variety of Sporting Activities in a Large Outdoor Ground.

Shinsuke Hara, Takunori Shimazaki, Takuma Hamagami, Yasutaka Kawamoto, Hiroyuki Yomo, Ryusuke Miyamoto, Hiroyuki Okuhata, Fumie Ono

Proceedings of the 7th International Conference on Sport Sciences Research and Technology Support, 2019

2018

Wireless Multi-Hop Networking for a Group of Exercisers Spread in a Sports Ground.

Takuma Hamagami, Yasutaka Kawamoto, Shinsuke Hara, Hiroyuki Yomo, Ryusuke Miyamoto, Takunori Shimazaki, Hiroyuki Okuhata

Proceedings of the 20th IEEE International Conference on e-Health Networking, 2018

AccuWiSe: Accurate Wireless Vital Sensing System for a Group of Exercisers - Hardware Configuration.

Shinsuke Hara, Takuma Hamagami, Yasutaka Kawamoto, Hiroyuki Yomo, Ryusuke Miyamoto, Takunori Shimazaki, Hiroyuki Okuhata, Fumie Ono, Kenichi Takizawa

Proceedings of the Third IEEE/ACM International Conference on Connected Health: Applications, 2018

AccuWiSe: Accurate Wireless Vital Sensing System for a Group of Exercisers - System Performance.

Takuma Hamagami, Yasutaka Kawamoto, Shinsuke Hara, Hiroyuki Yomo, Ryusuke Miyamoto, Takunori Shimazaki, Hiroyuki Okuhata, Fumie Ono, Kenichi Takizawa

Proceedings of the Third IEEE/ACM International Conference on Connected Health: Applications, 2018

2017

Challenges in Real-Time Vital Signs Monitoring for Persons During Exercises.

Shinsuke Hara, Hiroyuki Yomo, Ryusuke Miyamoto, Yasutaka Kawamoto, Hiroyuki Okuhata, Takashi Kawabata, Hajime Nakamura

Int. J. Wirel. Inf. Networks, 2017

Parameter optimization of motion artifact canceling PPG-based heart rate sensor by means of cross validation.

Shinsuke Hara, Takunori Shimazaki, Hiroyuki Okuhata, Hajime Nakamura, Takashi Kawabata, Kai Cai, Tomohito Takubo

Proceedings of the 11th International Symposium on Medical Information and Communication Technology, 2017

An energy-efficient task sharing in a wireless vital data collection system.

Takunori Shimazaki, Masaya Kimoto, Shinsuke Hara, Hiroyuki Okuhata

Proceedings of the 2017 European Conference on Circuit Theory and Design, 2017

2016

Real-Time Vital Monitoring for Persons during Exercises - Solutions and Challenges -.

Shinsuke Hara, Hiroyuki Okuhata, Takashi Kawabata, Hajime Nakamura, Hiroyuki Yomo

IEICE Trans. Commun., 2016

Processing time reduction of tone mapping based on iterative shrinkage smoothing using parallel processing.

Seijiro Imai, Dabwitso Kasauka, Hiroshi Tsutsui, Takashi Imagawa, Hiroyuki Okuhata, Yoshikazu Miyanaga

Proceedings of the International Symposium on Intelligent Signal Processing and Communication Systems, 2016

A real-time vital sensing system for persons during exercises.

Shinsuke Hara, Takunori Shimazaki, Hiroyuki Okuhata, Isao Shirakawa, Hiroyuki Yomo

Proceedings of the IEEE 6th International Conference on Consumer Electronics - Berlin, 2016

Image smoothing in the spatial domain using multigrid conjugate gradient methods based on accelerated iterative shrinkage.

Dabwitso Kasauka, Hiroshi Tsutsui, Seijiro Imai, Takashi Imagawa, Hiroyuki Okuhata, Yoshikazu Miyanaga

Proceedings of the Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, 2016

2015

Motion artifact cancellation and outlier rejection for clip-type ppg-based heart rate sensor.

Takunori Shimazaki, Shinsuke Hara, Hiroyuki Okuhata, Hajime Nakamura, Takashi Kawabata

Proceedings of the 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2015

Image smoothing using spatial iterative methods based on accelerated iterative shrinkage.

Dabwitso Kasauka, Hiroshi Tsutsui, Hiroyuki Okuhata, Takashi Imagawa, Yoshikazu Miyanaga

Proceedings of the Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, 2015

2014

Performance evaluation of packet forwarding methods in real-time vital data collection for players during a football game.

Shinsuke Hara, Kouhei Tezuka, Tetsuo Tsujioka, Hajime Nakamura, Takashi Kawabata, Kenji Watanabe, Masanao Ise, Noa Arime, Hiroyuki Okuhata

Proceedings of the 8th International Symposium on Medical Information and Communication Technology, 2014

Implementation of dynamic-range enhancement and super-resolution algorithms for medical image processing.

Hiroyuki Okuhata, Rintaro Imai, Masanao Ise, Roberto Yusi Omaki, Hajime Nakamura, Shinsuke Hara, Isao Shirakawa

Proceedings of the IEEE International Conference on Consumer Electronics, 2014

Elements of a real-time vital signs monitoring system for players during a football game.

Shinsuke Hara, Tetsuo Tsujioka, Takunori Shimazaki, Kouhei Tezuka, Masayuki Ichikawa, Masato Ariga, Hajime Nakamura, Takashi Kawabata, Kenji Watanabe, Masanao Ise, Noa Arime, Hiroyuki Okuhata

Proceedings of the 16th IEEE International Conference on e-Health Networking, 2014

Cancellation of motion artifact induced by exercise for PPG-based heart rate sensing.

Takunori Shimazaki, Shinsuke Hara, Hiroyuki Okuhata, Hajime Nakamura, Takashi Kawabata

Proceedings of the 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2014

Computational cost analysis and implementation of accelerated iterative shrinkage smoothing.

Dabwitso Kasauka, Hiroshi Tsutsui, Hiroyuki Okuhata, Yoshikazu Miyanaga

Proceedings of the Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, 2014

2013

Implementation of super-resolution scaler for Full HD and 4K video.

Hiroyuki Okuhata, Masanao Ise, Roberto Yusi Omaki, Isao Shirakawa

Proceedings of the IEEE Third International Conference on Consumer Electronics, 2013

Development of a real-time vital data collection system from players during a football game.

Shinsuke Hara, Tetsuo Tsujioka, Toui Kanda, Hajime Nakamura, Takashi Kawabata, Kenji Watanabe, Masanao Ise, Noa Arime, Hiroyuki Okuhata

Proceedings of the IEEE 15th International Conference on e-Health Networking, 2013

Application of the real-time Retinex image enhancement for endoscopic images.

Hiroyuki Okuhata, Hajime Nakamura, Shinsuke Hara, Hiroshi Tsutsui, Takao Onoye

Proceedings of the 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2013

2012

Halo artifacts reduction method for variational based realtime retinex image enhancement.

Hiroshi Tsutsui, Satoshi Yoshikawa, Hiroyuki Okuhata, Takao Onoye

Proceedings of the Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, 2012

2005

Design of Ogg Vorbis Decoder System for Embedded Platform.

Atsushi Kosaka, Hiroyuki Okuhata, Takao Onoye, Isao Shirakawa

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2005

2004

SoC design of Ogg Vorbis decoder using embedded processor.

Atsushi Kosaka, Satoshi Yamaguchi, Hiroyuki Okuhata, Takao Onoye, Isao Shirakawa

Proceedings of the First Conference on Computing Frontiers, 2004

1998

A low-power DSP core architecture for low bitrate speech codec.

Hiroyuki Okuhata, Morgan Hirosuke Miki, Takao Onoye, Isao Shirakawa

Proceedings of the 1998 IEEE International Conference on Acoustics, 1998

Implementation of H.324 audiovisual codec for mobile computing.

Gen Fujita, Hiroyuki Okuhata, Morgan Hirosuke Miki, Takao Onoye, Isao Shirakawa

Proceedings of the IEEE 1998 Custom Integrated Circuits Conference, 1998

Low-Power Implementation of H.324 Audiovisual Codec Dedicated to Mobile Computing.

Takao Onoye, Gen Fujita, Hiroyuki Okuhata, Morgan Hirosuke Miki, Isao Shirakawa

Proceedings of the ASP-DAC '98, 1998

1997

ASK digital demodulation scheme for noise immune infrared data communication.

Hiroshi Uno, Keiji Kumatani, Hiroyuki Okuhata, Isao Shirakawa, Toru Chiba

Wirel. Networks, 1997

A Low Power Receiver Architecture for 4 Mbps Infrared Wireless Communication.

Hiroyuki Okuhata, Hiroshi Uno, Keiji Kumatani, Isao Shirakawa, Toru Chiba

J. Circuits Syst. Comput., 1997

An object code compression approach to embedded processors.

Yukihiro Yoshida, Bao-Yu Song, Hiroyuki Okuhata, Takao Onoye, Isao Shirakawa

Proceedings of the 1997 International Symposium on Low Power Electronics and Design, 1997

Low power architecture for high speed infrared wireless communication system.

Hiroshi Uno, Keiji Kumatani, Hiroyuki Okuhata, Isao Shirakawa, Toru Chiba

Proceedings of the 1997 International Symposium on Low Power Electronics and Design, 1997