Hiroyuki Okuhata

Publication Activity (10 Years)

Years Active: 1997-2021
Publications (10 Years): 18

Top Topics

Data Collection

Image Smoothing

Outlier Rejection

Iterative Methods

Top Venues

Publications

Shiho Hanashiro, Junfeng Xue, Junya Morioka, Ryusuke Miyamoto, Takuma Hamagami, Kentaro Yanagihara, Yasutaka Kawamoto, Hiroyuki Okuhata, Hiroyuki Yomo, Tomohito Takubo
Testing Environment for Developing a Wireless Networking System based on Image-assisted Routing for Sports Applications. icSPORTS (2021)
Takuma Hamagami, Shinsuke Hara, Hiroyuki Yomo, Ryusuke Miyamoto, Yasutaka Kawamoto, Takunori Shimazaki, Hiroyuki Okuhata
Performance Prediction of Wireless Vital Data Collection System for Exercisers by a Network Simulator. IEICE Trans. Commun. (6) (2020)
Takuma Hamagami, Shinsuke Hara, Yasutaka Kawamoto, Hiroyuki Yomo, Ryusuke Miyamoto, Hiroyuki Okuhata
Summary of Experimental Results on Accurate Wireless Sensing System for a Group of Exercisers Spread in an Outdoor Ground. ISMICT (2020)
Shinsuke Hara, Takuma Hamagami, Yasutaka Kawamoto, Hiroyuki Yomo, Ryusuke Miyamoto, Hiroyuki Okuhata
An Adaptive Superframe Change in a Wireless Vital Sensor Network for a Group of Outdoor Exercisers. VTC Fall (2020)
Dabwitso Kasauka, Kenta Sugiyama, Hiroshi Tsutsui, Hiroyuki Okuhata, Yoshikazu Miyanaga
An Architecture for Real-Time Retinex-Based Image Enhancement and Haze Removal and Its FPGA Implementation. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (6) (2019)
Shinsuke Hara, Takunori Shimazaki, Takuma Hamagami, Yasutaka Kawamoto, Hiroyuki Yomo, Ryusuke Miyamoto, Hiroyuki Okuhata, Fumie Ono
A Real-time Vital Data Collection System for a Group of Persons during a Variety of Sporting Activities in a Large Outdoor Ground. icSPORTS (2019)
Takuma Hamagami, Yasutaka Kawamoto, Shinsuke Hara, Hiroyuki Yomo, Ryusuke Miyamoto, Takunori Shimazaki, Hiroyuki Okuhata
Wireless Multi-Hop Networking for a Group of Exercisers Spread in a Sports Ground. HealthCom (2018)
Shinsuke Hara, Takuma Hamagami, Yasutaka Kawamoto, Hiroyuki Yomo, Ryusuke Miyamoto, Takunori Shimazaki, Hiroyuki Okuhata, Fumie Ono, Kenichi Takizawa
AccuWiSe: Accurate Wireless Vital Sensing System for a Group of Exercisers - Hardware Configuration. CHASE (2018)
Takuma Hamagami, Yasutaka Kawamoto, Shinsuke Hara, Hiroyuki Yomo, Ryusuke Miyamoto, Takunori Shimazaki, Hiroyuki Okuhata, Fumie Ono, Kenichi Takizawa
AccuWiSe: Accurate Wireless Vital Sensing System for a Group of Exercisers - System Performance. CHASE (2018)
Shinsuke Hara, Hiroyuki Yomo, Ryusuke Miyamoto, Yasutaka Kawamoto, Hiroyuki Okuhata, Takashi Kawabata, Hajime Nakamura
Challenges in Real-Time Vital Signs Monitoring for Persons During Exercises. Int. J. Wirel. Inf. Networks 24 (2) (2017)
Takunori Shimazaki, Masaya Kimoto, Shinsuke Hara, Hiroyuki Okuhata
An energy-efficient task sharing in a wireless vital data collection system. ECCTD (2017)
Shinsuke Hara, Takunori Shimazaki, Hiroyuki Okuhata, Hajime Nakamura, Takashi Kawabata, Kai Cai, Tomohito Takubo
Parameter optimization of motion artifact canceling PPG-based heart rate sensor by means of cross validation. ISMICT (2017)
Shinsuke Hara, Takunori Shimazaki, Hiroyuki Okuhata, Isao Shirakawa, Hiroyuki Yomo
A real-time vital sensing system for persons during exercises. ICCE-Berlin (2016)
Dabwitso Kasauka, Hiroshi Tsutsui, Seijiro Imai, Takashi Imagawa, Hiroyuki Okuhata, Yoshikazu Miyanaga
Image smoothing in the spatial domain using multigrid conjugate gradient methods based on accelerated iterative shrinkage. APSIPA (2016)
Seijiro Imai, Dabwitso Kasauka, Hiroshi Tsutsui, Takashi Imagawa, Hiroyuki Okuhata, Yoshikazu Miyanaga
Processing time reduction of tone mapping based on iterative shrinkage smoothing using parallel processing. ISPACS (2016)
Shinsuke Hara, Hiroyuki Okuhata, Takashi Kawabata, Hajime Nakamura, Hiroyuki Yomo
Real-Time Vital Monitoring for Persons during Exercises - Solutions and Challenges -. IEICE Trans. Commun. (3) (2016)
Takunori Shimazaki, Shinsuke Hara, Hiroyuki Okuhata, Hajime Nakamura, Takashi Kawabata
Motion artifact cancellation and outlier rejection for clip-type ppg-based heart rate sensor. EMBC (2015)
Dabwitso Kasauka, Hiroshi Tsutsui, Hiroyuki Okuhata, Takashi Imagawa, Yoshikazu Miyanaga
Image smoothing using spatial iterative methods based on accelerated iterative shrinkage. APSIPA (2015)
Takunori Shimazaki, Shinsuke Hara, Hiroyuki Okuhata, Hajime Nakamura, Takashi Kawabata
Cancellation of motion artifact induced by exercise for PPG-based heart rate sensing. EMBC (2014)
Shinsuke Hara, Tetsuo Tsujioka, Takunori Shimazaki, Kouhei Tezuka, Masayuki Ichikawa, Masato Ariga, Hajime Nakamura, Takashi Kawabata, Kenji Watanabe, Masanao Ise, Noa Arime, Hiroyuki Okuhata
Elements of a real-time vital signs monitoring system for players during a football game. Healthcom (2014)
Dabwitso Kasauka, Hiroshi Tsutsui, Hiroyuki Okuhata, Yoshikazu Miyanaga
Computational cost analysis and implementation of accelerated iterative shrinkage smoothing. APSIPA (2014)
Shinsuke Hara, Kouhei Tezuka, Tetsuo Tsujioka, Hajime Nakamura, Takashi Kawabata, Kenji Watanabe, Masanao Ise, Noa Arime, Hiroyuki Okuhata
Performance evaluation of packet forwarding methods in real-time vital data collection for players during a football game. ISMICT (2014)
Hiroyuki Okuhata, Rintaro Imai, Masanao Ise, Roberto Y. Omaki, Hajime Nakamura, Shinsuke Hara, Isao Shirakawa
Implementation of dynamic-range enhancement and super-resolution algorithms for medical image processing. ICCE (2014)
Hiroyuki Okuhata, Masanao Ise, Roberto Y. Omaki, Isao Shirakawa
Implementation of super-resolution scaler for Full HD and 4K video. ICCE-Berlin (2013)
Shinsuke Hara, Tetsuo Tsujioka, Toui Kanda, Hajime Nakamura, Takashi Kawabata, Kenji Watanabe, Masanao Ise, Noa Arime, Hiroyuki Okuhata
Development of a real-time vital data collection system from players during a football game. Healthcom (2013)
Hiroyuki Okuhata, Hajime Nakamura, Shinsuke Hara, Hiroshi Tsutsui, Takao Onoye
Application of the real-time Retinex image enhancement for endoscopic images. EMBC (2013)
Hiroshi Tsutsui, Satoshi Yoshikawa, Hiroyuki Okuhata, Takao Onoye
Halo artifacts reduction method for variational based realtime retinex image enhancement. APSIPA (2012)
Atsushi Kosaka, Hiroyuki Okuhata, Takao Onoye, Isao Shirakawa
Design of Ogg Vorbis Decoder System for Embedded Platform. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (8) (2005)
Atsushi Kosaka, Satoshi Yamaguchi, Hiroyuki Okuhata, Takao Onoye, Isao Shirakawa
SoC design of Ogg Vorbis decoder using embedded processor. Conf. Computing Frontiers (2004)
Hiroyuki Okuhata, Morgan Hirosuke Miki, Takao Onoye, Isao Shirakawa
A low-power DSP core architecture for low bitrate speech codec. ICASSP (1998)
Takao Onoye, Gen Fujita, Hiroyuki Okuhata, Morgan Hirosuke Miki, Isao Shirakawa
Low-Power Implementation of H.324 Audiovisual Codec Dedicated to Mobile Computing. ASP-DAC (1998)
Gen Fujita, Hiroyuki Okuhata, Morgan Hirosuke Miki, Takao Onoye, Isao Shirakawa
Implementation of H.324 audiovisual codec for mobile computing. CICC (1998)
Yukihiro Yoshida, Bao-Yu Song, Hiroyuki Okuhata, Takao Onoye, Isao Shirakawa
An object code compression approach to embedded processors. ISLPED (1997)
Hiroshi Uno, Keiji Kumatani, Hiroyuki Okuhata, Isao Shirakawa, Toru Chiba
ASK digital demodulation scheme for noise immune infrared data communication. Wirel. Networks 3 (2) (1997)
Hiroyuki Okuhata, Hiroshi Uno, Keiji Kumatani, Isao Shirakawa, Toru Chiba
A Low Power Receiver Architecture for 4 Mbps Infrared Wireless Communication. J. Circuits Syst. Comput. 7 (5) (1997)
Hiroshi Uno, Keiji Kumatani, Hiroyuki Okuhata, Isao Shirakawa, Toru Chiba
Low power architecture for high speed infrared wireless communication system. ISLPED (1997)