Hiroaki Murakami

研究業績

本ページでは、査読付き論文誌および査読を経て採択された国際会議発表を掲載しています。 その他の研究発表については researchmap をご覧ください。

論文誌

2026

HeadGaze: Natural Gaze Estimation While Walking From a Single IMU on Earbuds

Ken Takaki, Mitsuhiro Kamezaki, Takuya Sasatani, Hiroaki Murakami, Yoshihiro Kawahara

IEEE Sensors Journal

DOI
2025

座席移動を伴う個人差空調システムに関する研究：制御ロジックが執務者の満足度に与える影響

神谷洋介, 谷口景一朗, 村上弘晃, 佐藤大輔, 松井伸樹, 赤司泰義

日本建築学会環境系論文集

Multipath-Assisted Smartphone Tracking Using a Single Speaker and a Built-In Monaural Microphone

Ibuki Yoshida, Masanari Nakamura, Hiroaki Murakami, Hiromichi Hashizume, Masanori Sugimoto

IEEE Journal of Indoor and Seamless Positioning and Navigation (J-ISPIN)

DOI
2023

Pedestrian Dead Reckoning for Multiple Walking Styles Using Classifier-Based Step Detection

Ibuki Yoshida, Takumi Suzaki, Hiroaki Murakami, Hiroki Watanabe, Mananari Nakamura, Hiromichi Hashizume, Masanori Sugimoto

IEEE Journal of Indoor and Seamless Positioning and Navigation (J-ISPIN)

DOI

音響屋内測位におけるモバイルデバイスのための高精度測位領域の拡張手法

須崎 太久弥, 中村 将成, 村上 弘晃, 渡邉 拓貴, 橋爪 宏達, 杉本 雅則

情報処理学会論文誌

2022

Efficient Adaptive Beacon Deployment Optimization for Indoor Crowd Monitoring Applications

Yang Zhen, Masato Sugasaki, Yoshihiro Kawahara, Kota Tsubouchi, Matthew Ishige, Hiroaki Murakami, Masamichi Shimosaka

Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies (IMWUT)

DOI IF 4.0 | Q1

NLOS環境における音響センシングを用いたスマートフォン間測距手法

神鳥 勇貴, 村上 弘晃, 須崎 太久弥, 中村 将成, 渡邉 拓貴, 橋爪 宏達, 杉本 雅則

情報処理学会論文誌

特選論文

単一のスピーカを用いたモノラルマイクロフォンの屋内測位手法

中村 将成, 藤本 拳士, 村上 弘晃, 橋爪 宏達, 杉本 雅則

情報処理学会論文誌

ALiSA: A Visible-Light Positioning System Using the Ambient Light Sensor Assembly in a Smartphone

Takuto Sato, Shota Shimada, Hiroaki Murakami, Hiroki Watanabe, Hiromichi Hashizume, Masanori Sugimoto

IEEE Sensors Journal

DOI IF 4.3 | Q1
2021

スマートフォン環境光センサを用いた可視光測位の提案

佐藤 拓斗, 嶋田 祥太, 村上 弘晃, 渡邉 拓貴, 橋爪 宏達, 杉本 雅則

情報処理学会論文誌

Five Degrees-of-Freedom Pose-Estimation Method for Smartphones Using a Single Acoustic Anchor

Hiroaki Murakami, Takumi Suzaki, Masanari Nakamura, Hiromichi Hashizume, Masanori Sugimoto

IEEE Sensors Journal

DOI IF 4.325 | Q1
2019

鏡像スピーカを用いたスマートフォン高精度3次元測位手法

村上 弘晃, 中村 将成, 橋爪 宏達, 杉本 雅則

情報処理学会論文誌

2020年度論文賞特選論文

国際会議

2026

Accelerating Model-Free Reinforcement Learning for HVAC Control with an LLM as a Policy Teacher

Toki Miyake, Hiroaki Murakami, Keiichiro Taniguchi, Yoshihiro Kawahara

Proceedings of the IEEE International Conference on Pervasive Computing and Communications Workshops and other Affiliated Events (PerCom Workshops'26)

Project DOI Poster

Can Floor Reflections Enable Absolute Robot Localization? A Single-Speaker TDoA Approach

Yukiya Mita, Hiroaki Murakami, Changyo Han, Yoshihiro Kawahara

Proceedings of the IEEE International Conference on Pervasive Computing and Communications Workshops and other Affiliated Events (PerCom Workshops'26)

DOI Poster

ReFDrone: One-Shot Indoor Drone 4DoF Estimation via Rolling-Shutter AoA from Floor-Reflected Light

Yusei Onishi, Hiroaki Murakami, Masanari Nakamura, Hiromichi Hashizume, Masanori Sugimoto

Proceedings of the IEEE International Conference on Pervasive Computing and Communications (PerCom'26)

Project DOI Full PaperAcceptance Rate 15.62%
2025

Hypothesis-Based Smartphone Tracking Using Multipath from a Single Speaker

Ibuki Yoshida, Masanari Nakamura, Hiroaki Murakami, Hiromichi Hashizume, Masanori Sugimoto

Proceedings of the IEEE International Conference on Indoor Positioning and Indoor Navigation (IPIN'25)

DOI Full Paper

Occlusion-Resilient UWB Localization Via Ceiling Reflection With Floor Anchor Installation

Yuto Shibata, Matthew Ishige, Hiroaki Murakami, Yoshihiro Kawahara

Proceedings of the ACM Conference on Embedded Networked Sensor Systems (SenSys'25)

DOI Poster

Acquisition and visualization of HVAC data by autonomous mobile robots

Changyo Han, Cedric Caremel, Keiichiro Taniguchi, Hiroaki Murakami, Katsuya Koike, Koki Higashioka, Toshihisa Toshima, Yasunori Akashi, Yoshihiro Kawahara

Proceedings of the International Conference of the Association for Computer-Aided Architectural Design Research in Asia (CAADRIA'25)

Project DOI Full PaperAcceptance Rate 26.3%
2024

Micro-Gesture Recognition of Tongue via Bone Conduction Sound

Shogo Tomaru, Ken Takaki, Hiroaki Murakami, Damyon Kim, Koya Narumi, Mitsuhiro Kamezaki, Yoshihiro Kawahara

Proceedings of the ACM Symposium on User Interface Software and Technology (UIST'24)

DOI Poster

SyncEcho: Echo-Based Single Speaker Time Offset Estimation for Time-of-Flight Localization

Hiroaki Murakami, Takuya Sasatani, Masanori Sugimoto, Issey Sukeda, Yukiya Mita, Yoshihiro Kawahara

Proceedings of the ACM Conference on Embedded Networked Sensor Systems (SenSys'24)

Project DOI Full PaperAcceptance Rate 18.5%

Exploring the Capabilities of Large Language Models in Seat Recommendation Systems for Hot-Desking Offices

Hiroaki Murakami, Keiichiro Taniguchi, Yosuke Kamiya, Katsuya Koike, Yoshihisa Toshima, Yasunori Akashi, Yoshihiro Kawahara

Proceedings of the ACM International Conference on Systems for Energy-Efficient Buildings, Cities, and Transportation (BuildSys'24)

Project DOI Short PaperAcceptance Rate 30.3%

Geometric Sound Profile: Multipath-Time-of-Flight Fingerprint for High-Accuracy Acoustic Localization

Yukiya Mita, Hiroaki Murakami, Takuya Sasatani, Yoshihiro Kawahara

Proceedings of the IEEE International Conference on Indoor Positioning and Indoor Navigation (IPIN'24)

Project DOI Full Paper Best Paper Award

Improving Coverage and Accuracy in Visible Light Positioning through Ceiling Reflection Modeling

Shota Shimada, Hiroaki Murakami, Ryo Tabata, Kota Tsubouchi, Takuya Sasatani, Yoshihiro Kawahara, Masanori Sugimoto

Proceedings of the IEEE International Conference on Indoor Positioning and Indoor Navigation (IPIN'24)

DOI Full Paper

Camera-Based Position Estimation using Frequency-Multiplexed Luminance Gradient

Shota Shimada, Hiroaki Murakami, Kota Tsubouchi, Takuya Sasatani, Yoshihiro Kawahara

Proceedings of the IEEE International Conference on Pervasive Computing and Communications (PerCom'24)

DOI Industry Track Paper
2023

Enhancing Fingerprint-based Smartphone Localization Using Acoustic Time-of-Flight for Complex Indoors

Yukiya Mita, Hiroaki Murakami, Takuya Sasatani, Matthew Ishige, Yoshihiro Kawahara

Proceedings of the ACM Conference on Embedded Networked Sensor Systems (SenSys'23)

DOI Poster

Development of control systems for VRF indoor units responds to individual thermal preferences

Keiichiro Taniguchi, Yosuke Kamiya, Daisuke Sato, Takashi Nishimoto, Ruizi Zhang, Shohei Miyata, Hiroaki Murakami, Nobuki Matsui, Yasunori Akashi, Yoshihiro Kawahara

Proceedings of the ACM International Conference on Systems for Energy-Efficient Buildings, Cities, and Transportation (BuildSys'23)

DOI Poster

Indoor 3D Positioning Method for a Microphone using a Single Speaker

Masanari Nakamura, Yuta Funada, Hiroaki Murakami, Hiromichi Hashizume, Masanori Sugimoto

Proceedings of the IEEE International Conference on Indoor Positioning and Indoor Navigation (IPIN'23)

DOI Full Paper

Data-driven Simulation of Wireless Communication Signal Strength in Indoor Environments

Takuhiro Shimokawa, Kota Tsubouchi, Yoshihiro Kawahara, Hiroaki Murakami, Masamichi Shimosaka

Proceedings of the IEEE International Conference on Indoor Positioning and Indoor Navigation (IPIN'23)

DOI Full Paper
2022

Recursive Queueing Estimation Using Smartphone-Based Acoustic Ranging

Issey Sukeda, Hiroaki Murakami, Yuuki Nishiyama, Yoshihiro Kawahara

Proceedings of the ACM Conference on Embedded Networked Sensor Systems (SenSys'22)

DOI Poster

Room Scale Localization Improvement Utilizing Stay Time Characteristics of Each Room

Ryoto Suzuki, Yuuki Nishiyama, Hiroaki Murakami, Yoshihiro Kawahara, Kaoru Sezaki

Proceedings of the ACM Conference on Embedded Networked Sensor Systems (SenSys'22)

DOI Poster

Toward Continuous Finger Positioning on Ear Using Bone Conduction Speaker

Yuke Zhang, Ken Takaki, Hiroaki Murakami, Takuya Sasatani, Yoshihiro Kawahara

Proceedings of the ACM Conference on Embedded Networked Sensor Systems (SenSys'22)

DOI Poster

MOCHA: mobile check-in application for university campuses beyond COVID-19

Yuuki Nishiyama, Hiroaki Murakami, Ryoto Suzuki, Kazusato Oko, Issey Sukeda, Kaoru Sezaki, Yoshihiro Kawahara

Proceedings of the ACM MobiHoc Workshop on Mobile Systems for COVID-19 Response (MobiCOVID'22)

DOI Workshop Paper

PT-Sync: COTS Speaker-based Pseudo Time Synchronization for Acoustic Indoor Positioning

Takumi Suzaki, Hiroaki Murakami, Masanari Nakamura, Hiroki Watanabe, Hiromichi Hashizume, Masanori Sugimoto

Proceedings of the IEEE International Conference on Indoor Positioning and Indoor Navigation (IPIN'22)

DOI Full Paper

Expanding the Positioning Area for Acoustic Localization Using COTS Mobile Devices

Takumi Suzaki, Masanari Nakamura, Hiroaki Murakami, Hiroki Watanabe, Hiromichi Hashizume, Masanori Sugimoto

Proceedings of the EAI International Conference on Mobile and Ubiquitous Systems: Computing, Networking and Services (MobiQuitous'21)

DOI Full Paper
2021

NL-Beep: A Ranging System between Multiple Smartphones Using Acoustic Sensing in NLOS Environments

Hiroaki Murakami, Yuki Kandori, Takumi Suzaki, Masanari Nakamura, Hiroki Watanabe, Hiromichi Hashizume, Masanori Sugimoto

Proceedings of the IEEE International Conference on Indoor Positioning and Indoor Navigation (IPIN'21)

DOI Full Paper

Indoor Localization Method For a Microphone Using a Single Speaker

Masanari Nakamura, Kento Fujimoto, Hiroaki Murakami, Hiromichi Hashizume, Masanori Sugimoto

Proceedings of the IEEE International Conference on Indoor Positioning and Indoor Navigation (IPIN'21)

DOI Full Paper
2019

3-D Localization for Smartphones using a Single Speaker

Hiroaki Murakami, Masanari Nakamura, Hiromichi Hashizume, Masanori Sugimoto

Proceedings of the IEEE International Conference on Indoor Positioning and Indoor Navigation (IPIN'19)

DOI Full Paper
2018

Smartphone Localization Using Active-Passive Acoustic Sensing

Hiroaki Murakami, Masanari Nakamura, Shoma Yamasaki, Hiromichi Hashizume, Masanori Sugimoto

Proceedings of the IEEE International Conference on Indoor Positioning and Indoor Navigation (IPIN'18)

DOI Full Paper