Katsuhiko Kaji

According to our database, Katsuhiko Kaji authored at least 66 papers between 2004 and 2023.

Collaborative distances:

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

2023

A Survey of Ground Truth Measurement Systems for Indoor Positioning.

Takuto Yoshida, Katsuhiko Kaji, Satoki Ogiso, Ryosuke Ichikari, Hideaki Uchiyama, Takeshi Kurata, Nobuo Kawaguchi

J. Inf. Process., 2023

Cardiac Massage Practice Application using Barometer in a Smart Phone and Sealed Bag.

Soto Mizukusa, Katsuhiko Kaji

Proceedings of the Adjunct Proceedings of the 2023 ACM International Joint Conference on Pervasive and Ubiquitous Computing & the 2023 ACM International Symposium on Wearable Computing, 2023

2021

Building a Crowdsensing Platform Based on Spatio-Temporal Fencing.

Nobuhito Miyagawa, Ryoga Tsuchimoto, Shota Suzaki, Katsuhiko Kaji

Proceedings of the Mobile and Ubiquitous Systems: Computing, Networking and Services, 2021

Monitoring Wheelchair Users in Care Facilities with BLE Beacons Attached to Wheels.

Yuki Ogane, Yu Enokibori, Katsuhiko Kaji

Proceedings of the Thirteenth International Conference on Mobile Computing and Ubiquitous Network, 2021

State Estimation Method Using Radio Wave Intensity of BLE Beacon Installed Inside Object.

Yuki Ogane, Ryoga Mizuno, Katsuhiko Kaji

Proceedings of the ICDCN '21: International Conference on Distributed Computing and Networking, 2021

2020

Method to Improve Accuracy of Indoor PDR Trajectories Using a Large Number of Trajectories.

Kosuke Yotsuya, Katsuhiro Naito, Naoya Chujo, Tadanori Mizuno, Katsuhiko Kaji

J. Inf. Process., 2020

2019

Off-Site Indoor Localization Competitions Based on Measured Data in a Warehouse.

Ryosuke Ichikari, Katsuhiko Kaji, Ryo Shimomura, Masakatsu Kourogi, Takashi Okuma, Takeshi Kurata

Sensors, 2019

A Smartphone 3D Positioning Method using a Spinning Magnet Marker.

Kosuke Watanabe, Kei Hiroi, Takeshi Kamiyama, Hiroyuki Sano, Masakatsu Tsukamoto, Masaji Katagiri, Daizo Ikeda, Katsuhiko Kaji, Nobuo Kawaguchi

J. Inf. Process., 2019

End-to-end walking speed estimation method for smartphone PDR using DualCNN-LSTM.

Nobuo Kawaguchi, Junto Nozaki, Takuto Yoshida, Kei Hiroi, Takuro Yonezawa, Katsuhiko Kaji

Proceedings of the Short Paper Proceedings of the Tenth International Conference on Indoor Positioning and Indoor Navigation - Work-in-Progress Papers (IPIN-WiP 2019) co-located with the Tenth International Conference on Indoor Positioning and Indoor Navigation (IPIN 2019), Pisa, Italy, September 30th, 2019

Step Recognition Method Using Air Pressure Sensor.

Katsuhiko Kaji, Keisuke Isomura, Tsubasa Takai

Proceedings of the 2019 International Conference on Indoor Positioning and Indoor Navigation, 2019

A PDR Smartphone Application Considering Side/Backward Steps.

Katsuhiko Kaji, Masaaki Kaneko, Nobuyuki Ito, Katsuhiro Naito, Naoya Chujo, Tadanori Mizuno

Proceedings of the Twelfth International Conference on Mobile Computing and Ubiquitous Network, 2019

A Smartphone Application that Automatically Provides Arrival Time based on Estimation of Train on Board.

Haruki Inoue, Katsuhiko Kaji

Proceedings of the Twelfth International Conference on Mobile Computing and Ubiquitous Network, 2019

Sampling rate dependency in pedestrian walking speed estimation using DualCNN-LSTM.

Takuto Yoshida, Junto Nozaki, Kenta Urano, Kei Hiroi, Katsuhiko Kaji, Takuro Yonezawa, Nobuo Kawaguchi

Proceedings of the 2019 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2019 ACM International Symposium on Wearable Computers, 2019

Ballroom dance step type recognition by random forest using video and wearable sensor.

Hitoshi Matsuyama, Kei Hiroi, Katsuhiko Kaji, Takuro Yonezawa, Nobuo Kawaguchi

Proceedings of the 2019 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2019 ACM International Symposium on Wearable Computers, 2019

Compensation Scheme for PDR Using Component-Wise Error Models.

Junto Nozaki, Kei Hiroi, Katsuhiko Kaji, Nobuo Kawaguchi

Proceedings of the Human Activity Sensing - Corpus and Applications, 2019

2018

Estimation of Person Existence in Room Using BLE Beacon and Its Platform.

Fumitaka Naruse, Katsuhiko Kaji

Proceedings of the Mobile Computing, Applications, and Services, 2018

Making Pier Data Broader and Deeper: - PDR Challenge and Virtual Mapping Party.

Takeshi Kurata, Ryosuke Ichikari, Ryo Shimomura, Katsuhiko Kaji, Takashi Okuma, Masakatsu Kourogi

Proceedings of the Mobile Computing, Applications, and Services, 2018

Method to Improve Accuracy of Indoor PDR Trajectories Using a Large Amount of Trajectories.

Kosuke Yotsuya, Nobuyuki Ito, Katsuhiro Naito, Naoya Chujo, Tadanori Mizuno, Katsuhiko Kaji

Proceedings of the Eleventh International Conference on Mobile Computing and Ubiquitous Network, 2018

Partial Matching Estimation Method of Walking Trajectories for Generating Indoor Pedestrian Networks.

Sou Sugimoto, Nobuyuki Ito, Katsuhiro Naito, Naoya Chujo, Tadanori Mizuno, Katsuhiko Kaji

Proceedings of the Eleventh International Conference on Mobile Computing and Ubiquitous Network, 2018

Activity Recognition Using Dual-ConvLSTM Extracting Local and Global Features for SHL Recognition Challenge.

Yuta Yuki, Junto Nozaki, Kei Hiroi, Katsuhiko Kaji, Nobuo Kawaguchi

Proceedings of the 2018 ACM International Joint Conference and 2018 International Symposium on Pervasive and Ubiquitous Computing and Wearable Computers, 2018

Short Segment Random Forest with Post Processing Using Label Constraint for SHL Recognition Challenge.

Hitoshi Matsuyama, Kenta Urano, Kei Hiroi, Katsuhiko Kaji, Nobuo Kawaguchi

Proceedings of the 2018 ACM International Joint Conference and 2018 International Symposium on Pervasive and Ubiquitous Computing and Wearable Computers, 2018

Prototype implementation of RFID based health management system with low-power ARM microcomputer.

Toshifumi Watanabe, Mizuki Murase, Katsuhiro Naito, Nobuyuki Ito, Katsuhiko Kaji, Naoya Chujo, Tadanori Mizuno

Proceedings of the 15th IEEE Annual Consumer Communications & Networking Conference, 2018

2017

Event.Locky: System of Event-Data Extraction from Webpages based on Web Mining.

Chenyi Liao, Kei Hiroi, Katsuhiko Kaji, Ken Sakurada, Nobuo Kawaguchi

J. Inf. Process., 2017

Detection of half-turn stairs from walking trajectories estimated by pedestrian dead reckoning.

Kosuke Yotsuya, Haruka Iwase, Nobuyuki Ito, Katsuhiro Naito, Naoya Chujo, Tadanori Mizuno, Katsuhiko Kaji

Proceedings of the Tenth International Conference on Mobile Computing and Ubiquitous Network, 2017

A three-dimensional smartphone positioning method using a spinning magnet marker.

Kosuke Watanabe, Kei Hiroi, Takeshi Kamiyama, Hiroyuki Sano, Masakatsu Tsukamoto, Masaji Katagiri, Daizo Ikeda, Katsuhiko Kaji, Nobuo Kawaguchi

Proceedings of the Tenth International Conference on Mobile Computing and Ubiquitous Network, 2017

Pedestrian direction estimation for each step using plane component of accelerometer.

Shogo Shimizu, Nobuyuki Ito, Katsuhiro Naito, Naoya Chujo, Tadanori Mizuno, Katsuhiko Kaji

Proceedings of the Tenth International Conference on Mobile Computing and Ubiquitous Network, 2017

Implementation and evaluation of child's location history transportation device for potentially dangerous area detection.

Kazunori Omura Hiroyuki Nonomura, Katsuhiro Naito, Tadanori Mizuno, Katsuhiko Kaji

Proceedings of the Tenth International Conference on Mobile Computing and Ubiquitous Network, 2017

A location estimation method using mobile BLE tags with tandem scanners.

Kenta Urano, Katsuhiko Kaji, Kei Hiroi, Nobuo Kawaguchi

Proceedings of the Adjunct Proceedings of the 2017 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2017 ACM International Symposium on Wearable Computers, 2017

Compensation scheme for PDR using sparse location and error model.

Junto Nozaki, Kei Hiroi, Katsuhiko Kaji, Nobuo Kawaguchi

Proceedings of the Adjunct Proceedings of the 2017 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2017 ACM International Symposium on Wearable Computers, 2017

Demo: Prototype implementation of ID card based momentum measurement system.

Naoki Yamamoto, Toshifumi Watanabe, Mizuki Murase, Katsuhiro Naito, Nobuyuki Ito, Katsuhiko Kaji, Naoya Chujo, Tadanori Mizuno

Proceedings of the 14th IEEE Annual Consumer Communications & Networking Conference, 2017

2016

A Location Estimation Method using BLE Tags Distributed Among Participants of a Large-Scale Exhibition.

Kenta Urano, Kei Hiroi, Katsuhiko Kaji, Nobuo Kawaguchi

Proceedings of the Adjunct Proceedings of the 13th International Conference on Mobile and Ubiquitous Systems: Computing Networking and Services, 2016

An Emergency Application for Smartphones Based on Rhythm Pattern Recognition.

Yoshino Niwa, Mayu Inamura, Katsuhiko Kaji

Proceedings of the Adjunct Proceedings of the 13th International Conference on Mobile and Ubiquitous Systems: Computing Networking and Services, 2016

pakapaka Method For BLE Beacon Identification.

Shota Ikeda, Katsuhiko Kaji

Proceedings of the Adjunct Proceedings of the 13th International Conference on Mobile and Ubiquitous Systems: Computing Networking and Services, 2016

Estimating 3D pedestrian trajectories using stability of sensing signal.

Katsuhiko Kaji, Nobuo Kawaguchi

Proceedings of the International Conference on Indoor Positioning and Indoor Navigation, 2016

PIEM: Path Independent Evaluation Metric for Relative Localization.

Masaaki Abe, Katsuhiko Kaji, Kei Hiroi, Nobuo Kawaguchi

Proceedings of the International Conference on Indoor Positioning and Indoor Navigation, 2016

Measurement methods of spatial ability using a virtual reality system.

Kosuke Shimada, Kei Hiroi, Nobuo Kawaguchi, Katsuhiko Kaji

Proceedings of the Ninth International Conference on Mobile Computing and Ubiquitous Networking, 2016

Multi-algorithm on-site evaluation system for PDR challenge.

Katsuhiko Kaji, Kohei Kanagu, Kazuya Murao, Nobuhiko Nishio, Kenta Urano, Hirokazu Iida, Nobuo Kawaguchi

Proceedings of the Ninth International Conference on Mobile Computing and Ubiquitous Networking, 2016

UbiComp/ISWC 2015 PDR challenge corpus.

Katsuhiko Kaji, Masaaki Abe, Weimin Wang, Kei Hiroi, Nobuo Kawaguchi

Proceedings of the 2016 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2016 ACM International Symposium on Wearable Computers, 2016

HASC-PAC2016: large scale human pedestrian activity corpus and its baseline recognition.

Haruyuki Ichino, Katsuhiko Kaji, Ken Sakurada, Kei Hiroi, Nobuo Kawaguchi

Proceedings of the 2016 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2016 ACM International Symposium on Wearable Computers, 2016

2015

Indoor positioning method integrating pedestrian Dead Reckoning with magnetic field and WiFi fingerprints.

Ryoji Ban, Katsuhiko Kaji, Kei Hiroi, Nobuo Kawaguchi

Proceedings of the Eighth International Conference on Mobile Computing and Ubiquitous Networking, 2015

Velobug: a mobile system for 3D indoor mapping.

Weimin Wang, Kenji Yamakawa, Kei Hiroi, Katsuhiko Kaji, Nobuo Kawaguchi

Proceedings of the 2015 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2015 ACM International Symposium on Wearable Computers, 2015

A pedestrian passage detection method by using spinning magnets on corridors.

Chihiro Takeshima, Katsuhiko Kaji, Kei Hiroi, Nobuo Kawaguchi, Takeshi Kamiyama, Ken Ohta, Hiroshi Inamura

Proceedings of the 2015 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2015 ACM International Symposium on Wearable Computers, 2015

A proposal of IndoorGML extended data model for pedestrian-oriented voice navigation system.

Hirokazu Iida, Kei Hiroi, Katsuhiko Kaji, Nobuo Kawaguchi

Proceedings of the Seventh ACM SIGSPATIAL International Workshop on Indoor Spatial Awareness, 2015

An Event Data Extraction Method Based on HTML Structure Analysis and Machine Learning.

Chenyi Liao, Kei Hiroi, Katsuhiko Kaji, Nobuo Kawaguchi

Proceedings of the 39th Annual Computer Software and Applications Conference, 2015

2014

Non-Local Dictionary Based Japanese Dish Names Recognition Using Multi-Feature CRF from Online Reviews.

Weichang Chen, Katsuhiko Kaji, Nobuo Kawaguchi, Kei Hiroi

Proceedings of the 4th International Conference on Web Intelligence, 2014

Privacy protection in WiFi-based location estimation.

Zuotao Peng, Katsuhiko Kaji, Nobuo Kawaguchi

Proceedings of the Seventh International Conference on Mobile Computing and Ubiquitous Networking, 2014

Proposal of a platform integrating POI information.

Shinji Ichien, Katsuhiko Kaji, Nobuo Kawaguchi

Proceedings of the Seventh International Conference on Mobile Computing and Ubiquitous Networking, 2014

Pedestrian dead reckoning based on human activity sensing knowledge.

Yuya Murata, Kei Hiroi, Katsuhiko Kaji, Nobuo Kawaguchi

Proceedings of the 2014 ACM International Joint Conference on Pervasive and Ubiquitous Computing, 2014

Design and Implementation of Event Information Summarization System.

Chenyi Liao, Katsuhiko Kaji, Kei Hiroi, Nobuo Kawaguchi

Proceedings of the IEEE 38th Annual Computer Software and Applications Conference, 2014

2013

Scalable QoS for XCAST Using Differentiated Services Architecture.

Odira Elisha Abade, Katsuhiko Kaji, Nobuo Kawaguchi

J. Inf. Process., 2013

HASC-IPSC: indoor pedestrian sensing corpus with a balance of gender and age for indoor positioning and floor-plan generation researches.

Katsuhiko Kaji, Hodaka Watanabe, Ryoji Ban, Nobuo Kawaguchi

Proceedings of the 2013 ACM International Joint Conference on Pervasive and Ubiquitous Computing, 2013

Elevator Acceleration Sensing: Design and Estimation Recognition Algorithm Using Crowdsourcing.

Tianhui Yang, Katsuhiko Kaji, Nobuo Kawaguchi

Proceedings of the IEEE 37th Annual Computer Software and Applications Conference, 2013

2012

QS-XCAST: a QoS aware XCAST implementation.

Odira Elisha Abade, Katsuhiko Kaji, Nobuo Kawaguchi

Proceedings of the International ICST Conference on Simulation Tools and Techniques, 2012

Application Layer Traffic Engineering for Multipoint Communication System.

Yumi Nakayama, Katsuhiko Kaji, Nobuo Kawaguchi

Proceedings of the 15th International Conference on Network-Based Information Systems, 2012

Gaussian Mixture Model and Particle Filter.

Katsuhiko Kaji, Nobuo Kawaguchi

Proceedings of the 2012 International Conference on Indoor Positioning and Indoor Navigation, 2012

External device session initiation framework using mobile phone connection information.

Toshiharu Asai, Katsuhiko Kaji, Nobuo Kawaguchi

Proceedings of the Asian Internet Engineering Conference, 2012

2011

HASC2011corpus: towards the common ground of human activity recognition.

Nobuo Kawaguchi, Ying Yang, Tianhui Yang, Nobuhiro Ogawa, Yohei Iwasaki, Katsuhiko Kaji, Tsutomu Terada, Kazuya Murao, Sozo Inoue, Yoshihiro Kawahara, Yasuyuki Sumi, Nobuhiko Nishio

Proceedings of the UbiComp 2011: Ubiquitous Computing, 13th International Conference, 2011

Distributed human activity data processing using HASC tool.

Nobuo Kawaguchi, Nobuhiro Ogawa, Yohei Iwasaki, Katsuhiko Kaji

Proceedings of the UbiComp 2011: Ubiquitous Computing, 13th International Conference, 2011

Improving visibility of remote gestures in distributed tabletop collaboration.

Naomi Yamashita, Katsuhiko Kaji, Hideaki Kuzuoka, Keiji Hirata

Proceedings of the 2011 ACM Conference on Computer Supported Cooperative Work, 2011

HASC Challenge: gathering large scale human activity corpus for the real-world activity understandings.

Nobuo Kawaguchi, Nobuhiro Ogawa, Yohei Iwasaki, Katsuhiko Kaji, Tsutomu Terada, Kazuya Murao, Sozo Inoue, Yoshihiro Kawahara, Yasuyuki Sumi, Nobuhiko Nishio

Proceedings of the 2nd Augmented Human International Conference, 2011

Quantitative simulation of XCAST6 performance using OMNeT++.

Odira Elisha Abade, Katsuhiko Kaji, Nobuo Kawaguchi

Proceedings of the AINTEC '11, Asian Internet Engineering Conference, Bangkok, Thailand, November 09, 2011

2010

TimeTable.Locky: nation wide WiFi location information system based on user contributed information.

Motoki Yano, Katsuhiko Kaji, Nobuo Kawaguchi

Proceedings of the Third International Workshop on Location and the Web, 2010

2009

Basic Design of Video Communication System Enabling Usersto Move Around in Shared Space.

Keiji Hirata, Yasunori Harada, Toshihiro Takada, Naomi Yamashita, Shigemi Aoyagi, Yoshinari Shirai, Katsuhiko Kaji, Junji Yamato, Kenji Nakazawa

IEICE Trans. Electron., 2009

2008

t-Room: Next Generation Video Communication System.

Keiji Hirata, Yasunori Harada, Toshihiro Takada, Shigemi Aoyagi, Yoshinari Shirai, Naomi Yamashita, Katsuhiko Kaji, Junji Yamato, Kenji Nakazawa

Proceedings of the Global Communications Conference, 2008. GLOBECOM 2008, New Orleans, LA, USA, 30 November, 2008

2004

Discussion Mining: Annotation-Based Knowledge Discovery from Real World Activities.

Katashi Nagao, Katsuhiko Kaji, Daisuke Yamamoto, Hironori Tomobe

Proceedings of the Advances in Multimedia Information Processing - PCM 2004, 5th Pacific Rim Conference on Multimedia, Tokyo, Japan, November 30, 2004

Annotated Music for Retrieval, Reproduction, and Sharing.

Keiji Hirata, Shu Matsuda, Katsuhiko Kaji, Katashi Nagao

Proceedings of the 2004 International Computer Music Conference, 2004