Keiichi Zempo - RankMe

98 papers A* 1B 10C 4Misc 2Journal 10Unranked 71

Year	Rank	Type	Title / Venue / Authors
2026	—	`conf`	Detecting Cross-Area Concept Links in HCI Using Persistent Homology. CHI Extended Abstracts Kosuke Shimizu, Shohei Komatsu, Kazuhiro Hayashi, Keiichi Zempo
2026	—	`conf`	Unremembered Attention: Trade-Off Between Visual Attention and Memory for Signage Triggered by a Crowd Gaze Chain. CHI Extended Abstracts Hyuma Auchi, Rina Masuda, Hiroyuki Minematsu, Ayuto Togashi, Yohei Shida, Keiichi Zempo
2026	J	`jnl`	Whip strike detection using high-sampling-rate audio by evaluating convolutional recurrent neural network configurations and class imbalance strategies. Eng. Appl. Artif. Intell. Aoi Taguchi, Yuki Fujita, Keiichi Zempo
2025	—	`conf`	Assessing the extent of the honey-pot effect on public display: a preliminary study in a virtual environment. AHs Noko Kuratomo, Christian Kray, Keiichi Zempo
2025	—	`conf`	Audio-Force: Pseudo-Haptic Force Feedback through Sound Localization, Reinforced by Obstruction and Pitch-Gain Variations. AHs Daniel Oswaldo Lopez Tassara, Naoto Wakatsuki, Keiichi Zempo
2025	B	`conf`	Background Sound Tempo Modulation Can Influence Scene-Specific Memory in Virtual Reality. VRST Hyuma Auchi, Shogo Fukushima, Yuki Fujita, Keiichi Zempo
2025	—	`conf`	Customer-Service Mirrored Avatar That Comes Beside You via Directional Spatial Audio. SIGGRAPH Asia Posters Nanako Matsuda, Hyuma Auchi, Tadashi Ebihara, Naoto Wakatsuki, Keiichi Zempo
2025	—	`conf`	Designing Undetectable Morphing Speech: How Morph Rate and Discrete/Continuous Changes Influences Change Detection Thresholds. AHs Hiiro Okano, Naoto Wakatsuki, Yukihiko Okada, Keiichi Zempo
2025	—	`conf`	Enhancing Pedestrian Situation Awareness Through Auditory Augmented Reality: Effects of Frequency Shift on Vehicle Looming Perception. INTERACT (1) Yuichi Mashiba, Keitaro Tokunaga, Naoto Wakatsuki, Hiroaki Yano, Keiichi Zempo
2025	J	`jnl`	Framework for Emotion Recognition Using Cross-Modal Transformers With Non-Contact Multimodal Signals Aiming Clinical Service Support. IEEE Access Homura Kawamura, Tomofumi Miura, Yuka Maeda, Yukihiko Okada, Keiichi Zempo
2025	J	`jnl`	Honey-pot effect on pedestrian attention to public displays in a virtual environment: head turns, walking past, and direct approaches. Frontiers Virtual Real. Noko Kuratomo, Christian Kray, Keiichi Zempo
2025	B	`conf`	Human-Like Remembering and Forgetting in LLM Agents: An ACT-R-Inspired Memory Architecture. HAI Yudai Honda, Yuki Fujita, Keiichi Zempo, Shogo Fukushima
2025	B	`conf`	Inducing the Presence of Rear Objects through Changes in Auditory Stimuli Using a Virtual Sound-Absorbing Wall. VRST Keitaro Tokunaga, Yuichi Mashiba, Naoto Wakatsuki, Keiichi Zempo, Hiroaki Yano
2025	—	`conf`	Meditation Support System Utilizing Pseudo-Heartbeat Auditory Feedback to Enhance Cardiac Interoceptive Awareness. AHs Akari Shimabukuro, Seioh Ezaki, Keiichi Zempo
2025	J	`jnl`	Myoelectric Stimulation Silent Subwoofer Which Presents the Deep Bass-Induced Body-Sensory Acoustic Sensation. IEEE Access Keiichi Zempo, Ryo Kashiwabara, Naoto Wakatsuki, Koichi Mizutani
2025	—	`conf`	Sound Seeker Beat: 360-Degree VR Rhythm Game with Surround Audio for Immersive Training in Spatial Cognition. AHs Yuta Yamauchi, Kai Shishido, Shota Sasaki, Taiga Noguchi, Modar Hassan, Keiichi Zempo
2024	—	`conf`	Auditory AR System to Induce Pseudo-Haptic Force Feedback for Lateral Hand Movements Using Spatially Localized Sound Stimuli. SIGGRAPH Asia Posters Daniel Oswaldo Lopez Tassara, Naoto Wakatsuki, Keiichi Zempo
2024	—	`conf`	Auditory Interface for Empathetic Synchronization of Facial Expressions between People with Visual Impairment and the Interlocutors. AHs Takayuki Komoda, Hisham Elser Bilal Salih, Tadashi Ebihara, Naoto Wakatsuki, Keiichi Zempo
2024	—	`conf`	Design of Underwater Acoustic Positioning System Using Delay-and-Sum Beamforming. GCCE Taiga Saito, Atsushi Tsuchiya, Tadashi Ebihara, Naoto Wakatsuki, Keiichi Zempo
2024	—	`conf`	Effect of Physical Extension on the Range of Demonstrative Indicators by Wearing Non-Humanoid Avatars with Different Looks. ICAT-EGVE Takayoshi Yamada, Moeki Horii, Tadashi Ebihara, Naoto Wakatsuki, Keiichi Zempo
2024	—	`conf`	Individual Diffusion Auralize Display Using an Array of Audio Source Position Tracking Ultrasonic Speakers. SIGGRAPH Asia Posters Hyuma Auchi, Akito Fukuda, Yuta Yamauchi, Homura Kawamura, Keiichi Zempo
2024	—	`conf`	Processing flow for realization of multi-channel spatial acoustics using parametric speakers. GCCE Akito Fukuda, Hyuma Auchi, Yuta Yamauchi, Homura Kawamura, Keiichi Zempo
2024	—	`conf`	Relationship between the resolution of echo images obtained from an acoustic ranging sensor and the accuracy of self-position estimation. GCCE Atsushi Tsuchiya, Naoto Wakatsuki, Tadashi Ebihara, Keiichi Zempo, Koichi Mizutani
2024	—	`conf`	TAI_ON: Audible Body and Its Enveloping Rhythm. SIGGRAPH Asia Art Gallery Seioh Ezaki, Keiichi Zempo
2024	—	`conf`	VR remote tourism system with natural gaze induction without causing user discomfort. AHs Shogo Aoyagi, Takayoshi Yamada, Kelvin Cheng, Soh Masuko, Keiichi Zempo
2024	—	`conf`	pSCOUTER: Time-Series Emotion Classification Using Contactless Measured Multimodal Biosignals in Medical Diagnosis. UbiComp Companion Homura Kawamura, Zhaolong Wang, Kotone Harima, Tatuya Yamanishi, Tomohumi Miura, Yuka Maeda, Yukihiko Okada, Keiichi Zempo
2023	J	`jnl`	Attracting Effect of Pinpoint Auditory Glimpse on Digital Signage. IEEE Access Noko Kuratomo, Haruna Miyakawa, Tadashi Ebihara, Naoto Wakatsuki, Koichi Mizutani, Keiichi Zempo
2023	—	`conf`	Auditory VR Generative System for Non-Experts to Reproduce Human Memories Through Natural Language Interactions. SIGGRAPH ASIA Posters Yuta Yamauchi, Keiko Ino, Keiichi Zempo
2023	—	`conf`	Effect of Salesperson Avatar Automatically Mimicking Customer's Nodding on the Enjoyment of Conversation in Virtual Environments. AHs Takumi Wakabayashi, Yukihiko Okada, Keiichi Zempo
2023	B	`conf`	Effect of voice imitation using voice conversion by avatar on customer service in Virtual Environments. VRST Hiiro Okano, Yukihiko Okada, Naoto Wakatsuki, Keiichi Zempo
2023	B	`conf`	Effects of symmetrical avatar arm movements on the sense of ownership of both hands inverted in a mirror. VRST Toko Fujita, Moeki Horii, Luis David Torres Mailleux, Masatatsu Miyagi, Yukihiko Okada, Keiichi Zempo
2023	—	`conf`	Gaze Cue Switcher for Joint Attention in VR Remote Tourism. SUI Shogo Aoyagi, Takayoshi Yamada, Kelvin Cheng, Soh Masuko, Keiichi Zempo
2023	—	`conf`	Melting into shadow: Toward less cognitively loaded communication in the dark. AHs Mizuki Yabutani, Hiroki Uchida, Koichi Mizutani, Naoto Wakatsuki, Keiichi Zempo
2023	—	`conf`	Method of ReconstructingWall Positions Using Direction-of-Arrival Estimation Based on the Doppler Effect of Omnidirectional Active Sonar. IPIN-WiP Atsushi Tsuchiya, Naoto Wakatsuki, Tadashi Ebihara, Keiichi Zempo, Koichi Mizutani
2023	—	`conf`	Rapport Building via a Digital Avatar with a "Voice" Entering into a Customer's Personal Space. AHs Azusa Yamazaki, Naoto Wakatsuki, Koichi Mizutani, Yukihiko Okada, Keiichi Zempo
2023	C	`conf`	Study on a Visible Light Communication and Positioning System Utilizing an Optical Diffusion Filter and Rolling Shutter Sensor. IPIN Reo Okawara, Tadashi Ebihara, Naoto Wakatsuki, Keiichi Zempo, Koichi Mizutani
2023	—	`conf`	Synchronized Expressions: An Auditory Interface for Naturally Harmonizing Facial Expressions between People with Visual Impairment and Sighted People. ISS Companion Takayuki Komoda, Hisham Elser Bilal Salih, Tadashi Ebihara, Naoto Wakatsuki, Keiichi Zempo
2023	B	`conf`	Whispering salesperson: perceptual illusion of interpersonal distance and ventriloquism effect in service of virtual environment by use of whisper voice. VRST Mizuki Yabutani, Azusa Yamazaki, Naoto Wakatsuki, Yukihiko Okada, Keiichi Zempo
2022	—	`conf`	"This" and "That" in Teleshopping with Possessive Telepresence Systems using 5G Mobile Networks. AHs Takayoshi Yamada, Kelvin Cheng, Soh Masuko, Keiichi Zempo
2022	—	`conf`	Auditory Indication System for Object-finding in Remote Collaborative Assistance. APMAR Takayuki Komoda, Fumina Utsumi, Takayoshi Yamada, Keiichi Zempo
2022	B	`conf`	Avatar Voice Morphing to Match Subjective and Objective Self Voice Perception. VRST Hiiro Okano, Keisuke Mizuno, Haruna Miyakawa, Keiichi Zempo
2022	J	`jnl`	EYEDi: Graphical Authentication Scheme of Estimating Your Encodable Distorted Images to Prevent Screenshot Attacks. IEEE Access Takayuki Kawamura, Tadashi Ebihara, Naoto Wakatsuki, Keiichi Zempo
2022	—	`conf`	Effect of Spatial and Temporal Dilation of a Brand Logo Printed on a VR Shopping Bag. ICAT-EGVE (Posters and Demos) Moeki Horii, Azusa Yamazaki, Noko Kuratomo, Keiichi Zempo
2022	—	`conf`	Effects of Scene and Human Action Auditory Icons in Stereophonic Image Sonification System. ICCE-TW Yuichi Mashiba, Hisham Elser Bilal Salih, Naoto Wakatsuki, Koichi Mizutani, Keiichi Zempo
2022	—	`conf`	Eye-Phonon: Wearable Sonification System based on Smartphone that Colors and Deepens the Daily Conversations for Person with Visual Impairment. MobileHCI (Adjunct) Haruna Miyakawa, Hisham Elser Bilal Salih, Tadashi Ebihara, Naoto Wakatsuki, Keiichi Zempo
2022	—	`conf`	First-person view hand posture estimation and fingerspelling recognition using HoloLens. GCCE Tomohito Fujimoto, Takayuki Kawamura, Keiichi Zempo, Sandra Puentes
2022	—	`conf`	Impact on the Quality of Interpersonal Relationships by Proximity using the Ventriloquism Effect in a Virtual Environment. ISS Companion Azusa Yamazaki, Naoto Wakatsuki, Koichi Mizutani, Yukihiko Okada, Keiichi Zempo
2022	—	`conf`	Indoor Self-Localization of Mobile Robots Using Asynchronous Acoustic Multipath Arrival Time Measurement. GCCE Atsushi Tsuchiya, Naoto Wakatsuki, Tadashi Ebihara, Keiichi Zempo, Koichi Mizutani
2022	B	`conf`	Inspection of unexpected defective products by semi-supervised learning based on a probability density function in high-yield food production. IEEE Big Data Masahiro Nakahara, Yuichi Mashiba, Ryusuke Miyamoto, Yuki Fujita, Hisashi Ishida, Keiichi Zempo
2022	J	`jnl`	Mouth-in-the-Door: The Effect of a Sound Image of an Avatar Intruding on Personal Space That Deviates in Position From the Visual Image. IEEE Access Keiichi Zempo, Azusa Yamazaki, Naoto Wakatsuki, Koichi Mizutani, Yukihiko Okada
2022	—	`conf`	Sharing Heartbeat: Toward Conducting Heartrate and Speech Rhythm through Tactile Presentation of Pseudo-heartbeats. UIST (Adjunct Volume) Mizuki Yabutani, Yuichi Mashiba, Homura Kawamura, Suzuha Harada, Keiichi Zempo
2022	—	`conf`	Silent subwoofer system using myoelectric stimulation to presents the acoustic deep bass experiences. UIST (Adjunct Volume) Keiichi Zempo, Ryo Kashiwabara, Naoto Wakatsuki, Koichi Mizutani
2022	—	`conf`	Spatialphonic360: Accuracy of the Arbitrary Sound Image Presentation using Surrounding Parametric Speakers. ISS Companion Noko Kuratomo, Hiroki Uchida, Tadashi Ebihara, Naoto Wakatsuki, Koichi Mizutani, Keiichi Zempo
2022	—	`conf`	Spatialphonic360: Acoustic Space for Arbitrary Sound Image Presentation Based on Both Ears Tracking. UbiComp/ISWC Adjunct Hiroki Uchida, Noko Kuratomo, Tadashi Ebihara, Naoto Wakatsuki, Keiichi Zempo
2022	—	`conf`	Zeroth: The self-awareness sense embodied by facing the coexistence of the physical and virtual bodies in the mirror. SIGGRAPH Asia Art Gallery Ami Miura, Hiroki Uchida, Takayuki Kawamura, Keiichi Zempo
2021	—	`conf`	2D-3D Transformation of Pointing Objects Based on Skeletal Body Surface Models for Remote Collaboration. GCCE Keisuke Mizuno, Keito Kamimura, Tadashi Ebihara, Naoto Wakatsuki, Keiichi Zempo
2021	B	`conf`	ALiSE: Non-wearable AR display through the looking glass, and what looks solid there. VRST Hiroki Uchida, Takayuki Kawamura, Keito Kamimura, Keiichi Zempo
2021	—	`conf`	ALiSE: Through the mirrored space, and what user interacts with avatars naturally. ISS Companion Hiroki Uchida, Tadashi Ebihara, Naoto Wakatsuki, Keiichi Zempo
2021	—	`conf`	Directional Resolution of Haptic Display Consisted of a pair of Vibrators Embedded Earrings. GCCE Ryo Kashiwabara, Ryota Sakuma, Keisuke Mizuno, Noko Kuratomo, Keiichi Zempo
2021	—	`conf`	Effects of Audio-Visual Information on Interpersonal Distance in Real and Virtual Environments. INTERACT (5) Azusa Yamazaki, Naoto Wakatsuki, Koichi Mizutani, Yukihiko Okada, Keiichi Zempo
2021	—	`conf`	How Much is the Noise Level be Reduced? - Speech Recognition Threshold in Noise Environments Using a Parametric Speaker -. INTERACT (2) Noko Kuratomo, Tadashi Ebihara, Naoto Wakatsuki, Koichi Mizutani, Keiichi Zempo
2021	J	`jnl`	Sensing Framework for the Internet of Actors in the Value Co-Creation Process with a Beacon-Attachable Indoor Positioning System. Sensors Keiichi Zempo, Taiga Arai, Takuya Aoki, Yukihiko Okada
2021	—	`conf`	Teleclinical Support System via MR-HMD Displaying Doctor's Instructions and Patient Information. LifeTech Keito Kamimura, Yuki Fujita, Tomofumi Miura, Yoshihisa Matsumoto, Yuka Maeda, Keiichi Zempo
2021	B	`conf`	Visual Transition of Avatars Improving Speech Comprehension in Noisy VR Environments. VRST Takayoshi Yamada, Azusa Yamazaki, Haruna Miyakawa, Yuichi Mashiba, Keiichi Zempo
2021	—	`conf`	Wearable Device for Evaluation of Players' Interaction on Voice Coaching on Football Field. GCCE Ikuma Uchida, Atom Scott, Yoshinari Kameda, Keiichi Zempo
2020	J	`jnl`	Frequency analysis of the sneeze caused by swine influenza virus strains: Automatic sneeze around-the-clock detection using a support vector machine. Comput. Electron. Agric. Misaki Mito, Takuya Aoki, Koichi Mizutani, Keiichi Zempo, Naoto Wakatsuki, Yuka Maeda, Nobuhiro Takemae, Ryota Tsunekuni, Takehiko Saito
2020	—	`conf`	Negative confidence recommendation system avoids local solution based on user's negative reactions. GCCE Takuma Yabe, Keiichi Zempo
2020	—	`conf`	QR Code Without Impairing the Scenery and Detection System for the visually impaired. GCCE Yuichi Mashiba, Hisham Elser Bilal Salih, Naoto Wakatsuki, Koichi Mizutani, Keiichi Zempo
2020	Misc	`conf`	Real-time reassurance monitoring shopping basket in retail store: poster abstract. SenSys Azusa Yamazaki, Ryo Akatsu, Yukihiko Okada, Keiichi Zempo
2020	J	`jnl`	Spot-Presentation of Stereophonic Earcons to Assist Navigation for the Visually Impaired. Multimodal Technol. Interact. Yuichi Mashiba, Ryunosuke Iwaoka, Hisham Elser Bilal Salih, Masayuki Kawamoto, Naoto Wakatsuki, Koichi Mizutani, Keiichi Zempo
2019	—	`conf`	Audio Substituting Haptic System to Aware the Sound from Backwards. UIST (Adjunct Volume) Ryota Sakuma, Yuki Fujita, Keiichi Zempo
2019	—	`conf`	Auditory Uta-KARUTA: Sonificated Card Game towards Inclusive Design. UIST (Adjunct Volume) Haruna Miyakawa, Noko Kuratomo, Hisham Elser Bilal Salih, Keiichi Zempo
2019	—	`conf`	Effect of Attention Adaptive Personal Audio Deliverable System on Digital Signage. SIGGRAPH Asia Technical Briefs Noko Kuratomo, Kazuki Yamada, Soh Masuko, Toshimasa Yamanaka, Keiichi Zempo
2019	C	`conf`	Evaluation of Indoor Positioning System based on Attachable Infrared Beacons in Metal Shelf Environment. ICCE Taiga Arai, Takahiro Yoshizawa, Takuya Aoki, Keiichi Zempo, Yukihiko Okada
2019	—	`conf`	Integrating a Binaural Beat into the Soundscape for the Alleviation of Feelings. INTERACT (4) Noko Kuratomo, Yuichi Mashiba, Keiichi Zempo, Koichi Mizutani, Naoto Wakatsuki
2019	—	`conf`	Sensor network to measure UbiComp/ISWC Adjunct Taiga Arai, Yusuke Chida, Yukihiko Okada, Keiichi Zempo
2019	—	`conf`	Shopping Baskets for On-line Beacon Sensor Network in Retail Store. CCNC Yuji Suda, Taiga Arai, Takahiro Yoshizawa, Yuki Fujita, Keiichi Zempo, Yukihiko Okada
2018	—	`conf`	Acoustic Beacon for Smartphones to Support Optimum Wi-Fi Spot Connection. GCCE Riku Fukuda, Ryunosuke Iwaoka, Tadashi Ebihara, Koichi Mizutani, Naoto Wakatsuki, Keiichi Zempo
2018	—	`conf`	Diet gamification toward chewing amount control via head mounted display. SIGGRAPH ASIA Posters Yuto Sugita, Keiichi Zempo, Yasumasa Ando, Yuya Kakutani, Koichi Mizutani, Naoto Wakatsuki
2018	—	`conf`	Phonoscape: Auralization of Photographs using Stereophonic Auditory Icons. UIST (Adjunct Volume) Keiichi Zempo, Yuichi Mashiba, Takayuki Kawamura, Noko Kuratomo, Hisham Elser Bilal Salih
2018	—	`conf`	Retrospective Speech Balloons on Speech-Visible AR via Head-Mounted Display. ISMAR Adjunct Tomoki Kurahashi, Ryota Sakuma, Keiichi Zempo, Koichi Mizutani, Naoto Wakatsuki
2018	—	`conf`	Sensorless Contact Force Evaluation of Bone-conducted Sound Transducer by Electrical Impedance in Limited Frequency Range. GCCE Satoki Ogiso, Koichi Mizutani, Naoto Wakatsuki, Keiichi Zempo, Yuka Maeda
2018	Misc	`conf`	Ultrasound from Cyber Map: Intuitive Guidance Method using Binaural Parametric Loudspeaker. ISS Ryunosuke Iwaoka, Masataka Moriga, Hisham Elser Bilal Salih, Keiichi Zempo, Koichi Mizutani, Naoto Wakatsuki
2017	—	`conf`	Disposition of captioning interface using see-through head-mounted display for conversation support. GCCE Tomoki Kurahashi, Kazuki Suemitsu, Keiichi Zempo, Koichi Mizutani, Naoto Wakatsuki
2017	—	`conf`	Estimation of the direction of radio frequency beacon using radio attenuation via human head. GCCE Hikaru Uchida, Satoki Ogiso, Keiichi Zempo, Koichi Mizutani, Naoto Wakatsuki
2017	A*	`conf`	Speech balloon system using single-channel microphone array on see-through head-mounted display. SIGGRAPH ASIA (Posters) Keiichi Zempo, Tomoki Kurahashi, Koichi Mizutani, Naoto Wakatsuki
2017	C	`conf`	The Alteration of Gustatory Sense by Virtual Chromatic Transition of Food Items. ICEC Yuto Sugita, Keiichi Zempo, Koichi Mizutani, Naoto Wakatsuki
2017	—	`conf`	The effect of fluctuation to auditory lateralization on stereophonic presentation using a pair of sound from ultrasound. GCCE Ryunosuke Iwaoka, Masataka Moriga, Keiichi Zempo, Makoto Ito, Masayuki Kawamoto, Koichi Mizutani, Naoto Wakatsuki
2016	—	`conf`	Auditory lateralization steering independent of loudspeaker position using sound from ultrasound. GCCE Masataka Moriga, Keiichi Zempo, Koichi Mizutani, Naoto Wakatsuki, Masayuki Kawamoto
2016	C	`conf`	Effect of parameters of phase-modulated M-sequence signal on direction-of-arrival and localization error. IPIN Satoki Ogiso, Takuji Kawagishi, Koichi Mizutani, Naoto Wakatsuki, Keiichi Zempo
2016	—	`conf`	Lung volume estimation for thoracic respiration via chest size deviation measurement. GCCE Yuji Sano, Koichi Mizutani, Keiichi Zempo, Naoto Wakatsuki
2015	—	`conf`	Caption support system for complementary dialogical information using see-through head mounted display. GCCE Kazuki Suemitsu, Keiichi Zempo, Koichi Mizutani, Naoto Wakatsuki
2015	—	`conf`	Localization of acoustic marker in inside environments based on the level difference between a pair of microphones. GCCE Rihito Muto, Koichi Mizutani, Naoto Wakatsuki, Keiichi Zempo
2015	—	`conf`	Measurement of the differential transfer function between bone-conduction and air-conduction for sound localization. GCCE Satoki Ogiso, Koichi Mizutani, Keiichi Zempo, Naoto Wakatsuki
2015	—	`conf`	Measurement of the distance difference of acoustic beacons using direct conversion receiver. GCCE Keiichi Zempo, Satoki Ogiso, Koichi Mizutani, Naoto Wakatsuki
2015	—	`conf`	Small sound extraction using virtual counter sound source method in loud noise environment. GCCE Keiichi Zempo, Yukino Hirai, Takuto Sakai, Koichi Mizutani, Naoto Wakatsuki, Hiroshi Yoshinaga
2014	—	`conf`	Analysis of sound propagation in human head for bone-conduction headphones using finite element method. GCCE Satoki Ogiso, Koichi Mizutani, Keiichi Zempo, Naoto Wakatsuki
2014	—	`conf`	Privacy-conscious detection of roll-over based on thermography measurement. GCCE Keiichi Zempo, Mizuho Okada, Takehiro Matsumoto, Yoichi Motomura, Hiroshi Sato