Junzo Kamahara

J-GLOBAL         Last updated: Sep 14, 2017 at 14:43
Junzo Kamahara
Kobe University
Twitter ID

Published Papers

Location-dependent Content-based Image Retrieval System Based on P2P Mobile Agent Framework
Yusuke Ariyoshi, Junzo Kamahara, Naoki Tanaka, Katsutoshi Hirayama, Takashi Nagamatsu, Yuuichi Teranishi
Proceedings of the 9th International Workshop on Mobile Peer-to-Peer Computing 2013 (MP2P 2013)      Mar 2013   [Refereed]
Junzo Kamahara, Naoki Tanaka, Katsutoshi Hirayama, Takashi Nagamatsu, Yuuichi Teranishi, Yusuke Ariyoshi
Proc. of 2012 Seventh International Conference on Broadband, Wireless Computing, Communication and Applications (BWCCA 2012)   82-87   Nov 2012   [Refereed]
In this article, we focus on the design of an agent-based P2P system for egeoconscious' image retrieval. This system constitutes intelligent agents on the structured P2P framework PIAX (P2P Interactive Agent extension), which is especially enhance...
Junzo Kamahara, Takashi Nagamatsu, Naoki Tanaka
Proceedings of the ACM multimedia 2012 workshop on Geotagging and its applications in multimedia (GeoMM'12)   9-14   Nov 2012   [Refereed]
Development and Algorithmic Analysis of Maritime Human Resource Database
Junzo Kamahara, Mathew ROOKS, Masao FURUSHO
Proc of 13th Annual General Assembly of the IAMU      Oct 2012   [Refereed]
Takashi Nagamatsu, Yukina Iwamoto, Ryuichi Sugano,, Junzo Kamahara, Naoki Tanaka, and Michiya Yamamoto
IEICE Transactions on Information and Systems   E95-D(6) 1656-1667   Jun 2012   [Refereed]
We have proposed a novel geometric model of the eye in order to avoid the problems faced while using the conventional spherical model of the cornea for three dimensional (3D) model-based gaze estimation. The proposed model models the eye, includin...
Takashi Nagamatsu, Michiya Yamamoto, Ryuichi Sugano, Junzo Kamahara
Proc. of the Symposium on Eye Tracking Research and Applications (ETRA '12)   257-260   May 2012   [Refereed]
In this paper, we propose a mathematical model for a wide range gaze tracking system based on corneal reflections and pupil using calibrated stereo cameras and light sources. We demonstrate a general calculation method for estimating the optical a...
Tatsuhiko Ueki, Ryuichi Sugano, Takashi Nagamatsu, Junzo Kamahara
Proc. of the international conference extended abstracts on Human factors in computing systems (CHI EA '12)   2225-2230   May 2012   [Refereed]
We propose the use of a particle filter in an automatic user-calibration method for a remote gaze-tracking system. From previous studies, the optical axis of the eye is estimated using two calibrated cameras and two light sources. To realize gaze ...
IEICE TRANSACTIONS on Information and Systems   E94-D(9) 1817-1829   Sep 2011   [Refereed]
This paper presents a user-calibration-free method for estimating the point of gaze (POG). This method provides a fast and stable solution for realizing user-calibration-free gaze estimation more accurately than the conventional method that uses t...
Junzo Kamahara, Takashi Nagamatsu, Masashi Tada, Yohei Kaieda and Yutaka Ishii
Proceedings of User Modeling, Adaptation and Personalization (UMAP 2010)   LNCS 6075 89-98   Jun 2010   [Refereed]
We develop a multimedia instruction system for the inheritance of skills. This system identifies the difficult segments of video by analyzing user behavior. Difficulties may be inferred by the learner’s requiring more time to fully process a porti...
Junzo Kamahara, Takashi Nagamatsu, Yohei Kaieda, Yutaka Ishii
Proceedings of the 2010 International Workshop on Multimedia and Semantic Technologies (MUST 2010)   1-6   May 2010   [Refereed]
In a previous study, we proposed a method for identifying hardships in a task by analyzing operating logs of learners using a multimedia player. However, this method could not deal with the varying rate of playback speed; thus, it was difficult to...
Junzo Kamahara, Takashi Nagamatsu, Yuki Fukuhara, Yohei Kaieda and Yutaka Ishii
Proceedins of 4th International Conference on Semantic and Digital Media Technologies (SAMT 2009)   LNCS 5887 161-164   Dec 2009   [Refereed]
We propose a new identification method that aids in the development of multimedia contents of task instruction. Our method can identify the difficult parts of a task in an instruction video by analyzing the operation logs of multimedia player used...

Conference Activities & Talks

Junzo Kamahara
2017 IEICE General Conference   22 Mar 2017   The Institute of Electronics, Information, Communication Engineers
Takashi Nagamatsu, Sachio Echizen, Teruhiko Akazawa, Junzo Kamahara
Proceedings of the ACM International Conference on Interactive Tabletops and Surface (ITS '11)   15 Nov 2011   
Takashi Nagamatsu, Ryuichi Sugano, Junzo Kamahara, Michiya Yamamoto
Novel Gaze-Controlled Applications 2011(NGCA 2011)   27 May 2011   
An Architecture of Personalized Sports Digest System with Scenario Templates
Proceedings of the 7th Int'l Conf. on Database Systems for Advanced Applications (DASFAA2001)   2001   
Automatic Production of Personalized with DynamicScenario
2001 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Vol.I (PACRIM'01)   2001