Low power architecture for high speed infrared wireless communication system. - Hiroshi Uno; Keiji Kumatani; Hiroyuki Okuhata; Isao Shirakawa; Toru Chiba (ISLPED, 1997)

An object code compression approach to embedded processors. - Yukihiro Yoshida; Bao-Yu Song; Hiroyuki Okuhata; Takao Onoye; Isao Shirakawa (ISLPED, 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)

ASK digital demodulation scheme for noise immune infrared data communication. - Hiroshi Uno; Keiji Kumatani; Hiroyuki Okuhata; Isao Shirakawa; Toru Chiba (Wirel. Networks, 1997)

Low-Power Implementation of H.324 Audiovisual Codec Dedicated to Mobile Computing. - Takao Onoye; Gen Fujita; Hiroyuki Okuhata; Morgan Hirosuke Miki; Isao Shirakawa (ASP-DAC, 1998)

Implementation of H.324 audiovisual codec for mobile computing. - Gen Fujita; Hiroyuki Okuhata; Morgan Hirosuke Miki; Takao Onoye; Isao Shirakawa (CICC, 1998)

A low-power DSP core architecture for low bitrate speech codec. - Hiroyuki Okuhata; Morgan Hirosuke Miki; Takao Onoye; Isao Shirakawa (ICASSP, 1998)

SoC design of Ogg Vorbis decoder using embedded processor. - Atsushi Kosaka; Satoshi Yamaguchi; Hiroyuki Okuhata; Takao Onoye; Isao Shirakawa (Conf. Computing Frontiers, 2004)

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)

Halo artifacts reduction method for variational based realtime retinex image enhancement. - Hiroshi Tsutsui; Satoshi Yoshikawa; Hiroyuki Okuhata; Takao Onoye (APSIPA, 2012)

Application of the real-time Retinex image enhancement for endoscopic images. - Hiroyuki Okuhata; Hajime Nakamura; Shinsuke Hara; Hiroshi Tsutsui; Takao Onoye (EMBC, 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 (Healthcom, 2013)

Implementation of super-resolution scaler for Full HD and 4K video. - Hiroyuki Okuhata; Masanao Ise; Roberto Yusi Omaki; Isao Shirakawa (ICCE-Berlin, 2013)

Computational cost analysis and implementation of accelerated iterative shrinkage smoothing. - Dabwitso Kasauka; Hiroshi Tsutsui; Hiroyuki Okuhata; Yoshikazu Miyanaga (APSIPA, 2014)

Cancellation of motion artifact induced by exercise for PPG-based heart rate sensing. - Takunori Shimazaki; Shinsuke Hara; Hiroyuki Okuhata; Hajime Nakamura; Takashi Kawabata (EMBC, 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 (Healthcom, 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 (ICCE, 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 (ISMICT, 2014)

Image smoothing using spatial iterative methods based on accelerated iterative shrinkage. - Dabwitso Kasauka; Hiroshi Tsutsui; Hiroyuki Okuhata; Takashi Imagawa; Yoshikazu Miyanaga (APSIPA, 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 (EMBC, 2015)

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 (APSIPA, 2016)

A real-time vital sensing system for persons during exercises. - Shinsuke Hara; Takunori Shimazaki; Hiroyuki Okuhata; Isao Shirakawa; Hiroyuki Yomo (ICCE-Berlin, 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 (ISPACS, 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)

An energy-efficient task sharing in a wireless vital data collection system. - Takunori Shimazaki; Masaya Kimoto; Shinsuke Hara; Hiroyuki Okuhata (ECCTD, 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 (ISMICT, 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)

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 (CHASE, 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 (CHASE, 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 (HealthCom, 2018)

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 (icSPORTS, 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)

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 (ISMICT, 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 (VTC Fall, 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)

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 (icSPORTS, 2021)