Doctor of Engineering(Tokyo Institute of Technology), Master of Engineering(Tokyo Institute of Technology)
Research funding number
60203402
Profile
Yuji Iwahori received B.S. degree from Dept. of Computer Science, Nagoya Institute of Technology, M.S. degree and Ph.D. degree from the Dept. of Electrical and Electronics, Tokyo Institute of Technology in1985 and 1988, respectively. He joined Educational Centre for Information Processing, Nagoya Institute of Technology as a research associate in 1988 and he became a professor of Centre for Information and Media Studies, Nagoya Institute of Technology in 2002. He has joined Chubu University as a professor since 2004 and he is currently the head of Graduate Program of Computer Science, Chubu University, Japan. In the meanwhile, he has been a visiting researcher of UBC Computer Science, Canada since 1991. He has been a research collaborator with Indian Institute of Technology Guwahati and Chulalongkorn University since 2012 and 2014. He has also been a research collaborator with Harbin University of Science and Technology (HUST) since 2014. His research interests include Computer Vision, Image Recognition, Neural Network and Application of Artificial Intelligence. He got KES 2008 Best Paper Award and KES 2013 Best Paper Award from KES International.
"Polyp Shape Recovery using Vascular Border from Single Colonoscopy Image", BIOIMAGING 2019 Best Poster Award, INSTICC
Jan 2018
"Dense 3D Reconstruction of Endoscopic Polyp", BIOIMAGING 2018 Best Poster Award, INSTICC
Nov 2017
Promoting and Contributing Global Engagement, Tanaka-Ohio Award for Excellence in Global Engagement, Ohio University
Jun 2017
"Detection and Classification of Defective Electronic Circuit Boards Using CNN Features and Keypoint Extraction", PATTERNS 2017 Best Paper Award, IARIA
Winner: Yuji Iwahori
Sep 2013
""Shape from Endoscope Image based on Photometric and Geometric Constraints"", KES 2013 Best Paper Award, KES International
Sep 2008
"Efficient Tracking with AdaBoost and Particle Filter under Complicated Background", KES 2008 Best Paper Award, KES International
Oct 2002
Expression of Liquid Flow Using Density Change Model in Virtual Liquid Manipulation, Outstanding Award of 18th NICOGRAPH Paper Contest
Pawan Kumar Dixit, Yuji Iwahori, M. K. Bhuyan, Kunio Kasugai, Amit Vishwakarma
Proceedings of the 2017 International Conference on Wireless Communications, Signal Processing and Networking, WiSPNET 2017 2018-January 52-57 Feb 2018
Mayank Golhar, Yuji Iwahori, M. K. Bhuyan, Kenji Funahashi, Kunio Kasugai
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 10857 LNCS 147-168 Jan 2018
Conference on Technologies and Applications of Artificial Intelligence, TAAI 2018, Taichung, Taiwan, November 30 - December 2, 2018 102-105 2018 [Refereed]
Yuji Iwahori,Yohei Takada,Tokiko Shiina,Yoshinori Adachi,M. K. Bhuyan,Boonserm Kijsirikul
Knowledge-Based and Intelligent Information & Engineering Systems: Proceedings of the 22nd International Conference KES-2018, Belgrade, Serbia, 3-5 September 2018. 1673-1682 2018 [Refereed]
2018 International Conference on Identification, Information and Knowledge in the Internet of Things, IIKI 2018, Beijing, China, October 19-21, 2018 276-282 2018 [Refereed]
Ankur Deka,Yuji Iwahori,Manas Kamal Bhuyan,Pradipta Sasmal,Kunio Kasugai
Proceedings of the 11th International Joint Conference on Biomedical Engineering Systems and Technologies (BIOSTEC 2018) - Volume 2: BIOIMAGING, Funchal, Madeira, Portugal, January 19-21, 2018. 159-166 2018 [Refereed]
Data Science - 4th International Conference of Pioneering Computer Scientists, Engineers and Educators, ICPCSEE 2018, Zhengzhou, China, September 21-23, 2018, Proceedings, Part I 729-737 2018 [Refereed]
Information Science and Electronic Engineering - Proceedings of the 3rd International Conference of Electronic Engineering and Information Science, ICEEIS 2016 127-130 Jan 2017
Proceedings of 2nd International Conference on Computer Vision & Image Processing - CVIP 2017, Roorkee, India, September 9-12, 2017, Volume 1 243-252 2017 [Refereed]
A. L. Wang, C. Y. Hu, X. M. Liu, Y. J. Iwahori, R. Kang
Information Science and Electronic Engineering - Proceedings of the 3rd International Conference of Electronic Engineering and Information Science, ICEEIS 2016 69-72 Jan 2017
Mayank Golhar,Yuji Iwahori,Manas Kamal Bhuyan,Kenji Funahashi,Kunio Kasugai
Proceedings of the 6th International Conference on Pattern Recognition Applications and Methods, ICPRAM 2017, Porto, Portugal, February 24-26, 2017. 148-156 2017 [Refereed]
Yuji Iwahori,Hiroaki Hagi,Hiroyasu Usami,Robert J. Woodham,Aili Wang,Manas Kamal Bhuyan,Kunio Kasugai
Proceedings of the 6th International Conference on Pattern Recognition Applications and Methods, ICPRAM 2017, Porto, Portugal, February 24-26, 2017. 402-409 2017 [Refereed]
Joint 17th World Congress of International Fuzzy Systems Association and 9th International Conference on Soft Computing and Intelligent Systems, IFSA-SCIS 2017, Otsu, Japan, June 27-30, 2017 1-5 2017 [Refereed]
Daimu Oiwa,Shinji Fukui 0001,Yuji Iwahori,Boonserm Kijsirikul,Tsuyoshi Nakamura,Manas Kamal Bhuyan
Knowledge-Based and Intelligent Information & Engineering Systems: Proceedings of the 21st International Conference KES-2017, Marseille, France, 6-8 September 2017. 1479-1487 2017 [Refereed]
Knowledge-Based and Intelligent Information & Engineering Systems: Proceedings of the 21st International Conference KES-2017, Marseille, France, 6-8 September 2017. 1633-1640 2017 [Refereed]
Knowledge-Based and Intelligent Information & Engineering Systems: Proceedings of the 21st International Conference KES-2017, Marseille, France, 6-8 September 2017. 1793-1800 2017 [Refereed]
Proceedings of International Conference on Computer Vision and Image Processing - CVIP 2016, Indian Institute of Technology Roorkee, February 26-28, 2016, Volume 1 523-532 2016 [Refereed]
Yuji Iwahori,Daiki Yamaguchi,Tsuyoshi Nakamura,Boonserm Kijsirikul,Manas Kamal Bhuyan,Kunio Kasugai
Proceedings of the 5th International Conference on Pattern Recognition Applications and Methods, ICPRAM 2016, Rome, Italy, February 24-26, 2016. 503-509 2016 [Refereed]
Kota Higashi,Shinji Fukui 0001,Yuji Iwahori,Yoshinori Adachi,Manas Kamal Bhuyan
Knowledge-Based and Intelligent Information & Engineering Systems: Proceedings of the 20th International Conference KES-2016, York, UK, 5-7 September 2016. 896-903 2016 [Refereed]
Aashish Amber, Yuji Iwahori, M. K. Bhuyan, Robert J. Woodham, Kunio Kasugai
Proceedings - 3rd International Conference on Applied Computing and Information Technology and 2nd International Conference on Computational Science and Intelligence, ACIT-CSI 2015 299-304 Nov 2015
Proceedings - 3rd International Conference on Applied Computing and Information Technology and 2nd International Conference on Computational Science and Intelligence, ACIT-CSI 2015 339-342 Nov 2015
Ryosuke Yamanishi, Ryoya Fujimoto, Yuji Iwahori, Robert J. Woodham
International Journal of Networked and Distributed Computing 3 234-242 Nov 2015
This paper proposes a hybrid approach of ontology and image clustering to automatically generate hierarchic image database. In the field of computer vision, "generic object recognition" is one of the most important topics. Generic object recogniti...
Yuji Iwahori, Seiya Tsuda, Robert J. Woodham, M. K. Bhuyan, Kunio Kasugai
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 9493 229-246 Jan 2015
Ryosuke Yamanishi,Ryoya Fujimoto,Yuji Iwahori,Robert J. Woodham
14th IEEE/ACIS International Conference on Computer and Information Science, ICIS 2015, Las Vegas, NV, USA, June 28 - July 1, 2015 179-184 2015 [Refereed]
Yuji Iwahori,Seiya Tsuda,Robert J. Woodham,Manas Kamal Bhuyan,Kunio Kasugai
ICPRAM 2015 - Proceedings of the International Conference on Pattern Recognition Applications and Methods, Volume 2, Lisbon, Portugal, 10-12 January, 2015. 62-70 2015 [Refereed]
Yuji Iwahori,Akira Hattori,Yoshinori Adachi,Manas Kamal Bhuyan,Robert J. Woodham,Kunio Kasugai
19th International Conference in Knowledge Based and Intelligent Information and Engineering Systems, KES 2015, Singapore, 7-9 September 2015 730-739 2015 [Refereed]
Shinji Fukui,Ryuji Nishiyama,Yuji Iwahori,M. K. Bhuyan,Robert J. Woodham
19th International Conference in Knowledge Based and Intelligent Information and Engineering Systems, KES 2015, Singapore, 7-9 September 2015 740-749 2015 [Refereed]
Himanshu Agrahari,Yuji Iwahori,Manas Kamal Bhuyan,Somnath Ghorai,Himanshu Kohli,Robert J. Woodham,Kunio Kasugai
ICPRAM 2014 - Proceedings of the 3rd International Conference on Pattern Recognition Applications and Methods, ESEO, Angers, Loire Valley, France, 6-8 March, 2014 495-501 2014 [Refereed]
18th International Conference in Knowledge Based and Intelligent Information and Engineering Systems, KES 2014, Gdynia, Poland, 15-17 September 2014 1202-1209 2014 [Refereed]
Hiroaki Hagi,Yuji Iwahori,Shinji Fukui,Yoshinori Adachi,Manas Kamal Bhuyan
18th International Conference in Knowledge Based and Intelligent Information and Engineering Systems, KES 2014, Gdynia, Poland, 15-17 September 2014 1210-1218 2014 [Refereed]
Shuya Ishida,Shinji Fukui,Yuji Iwahori,Manas Kamal Bhuyan,Robert J. Woodham
18th International Conference in Knowledge Based and Intelligent Information and Engineering Systems, KES 2014, Gdynia, Poland, 15-17 September 2014 1219-1228 2014 [Refereed]
Shuya Ishida, Shinji Fukui, Yuji Iwahori, M. K. Bhuyan, Robert J. Woodham
Lecture Notes in Engineering and Computer Science 3 LNECS 2195-2200 Nov 2013
Computer vision methods need to deal with shadows explicitly because shadows often have a negative effect on the results computed. A new shadow detection method is proposed. The new method is based on a shadow model. The model is constructed by fe...
Studies in Computational Intelligence 493 115-127 Jan 2013
This paper proposes a new method to improve the classification accuracy by multiple classes classification using multiple SVM. The proposed approach classifies the true and pseudo defects by adding features to decrease the incorrect classification...
Shuya Ishida, Shinji Fukui, Yuji Iwahori, M. K. Bhuyan, Robert J. Woodham
Studies in Computational Intelligence 493 103-113 Jan 2013
An object detection method needs a shadow detection because shadows often have a harmful effect on the result. Shadow detection methods based on shadow models are proposed. A new shadow model is proposed in this paper. The proposed model is constr...
Gaku Watanabe,Shinji Fukui,Yuji Iwahori,Manas Kamal Bhuyan,Robert J. Woodham,Yoshinori Adachi
17th International Conference in Knowledge Based and Intelligent Information and Engineering Systems, KES 2013, Kitakyushu, Japan, 9-11 September 2013 366-374 2013 [Refereed]
17th International Conference in Knowledge Based and Intelligent Information and Engineering Systems, KES 2013, Kitakyushu, Japan, 9-11 September 2013 772-779 2013 [Refereed]
17th International Conference in Knowledge Based and Intelligent Information and Engineering Systems, KES 2013, Kitakyushu, Japan, 9-11 September 2013 968-975 2013 [Refereed]
Keita Tatematsu,Yuji Iwahori,Tsuyoshi Nakamura,Shinji Fukui,Robert J. Woodham,Kunio Kasugai
17th International Conference in Knowledge Based and Intelligent Information and Engineering Systems, KES 2013, Kitakyushu, Japan, 9-11 September 2013 1285-1293 2013 [Refereed]
Neeraj Mishra,Manas Kamal Bhuyan,T. Malathi,Yuji Iwahori,Robert J. Woodham
Pattern Recognition and Machine Intelligence - 5th International Conference, PReMI 2013, Kolkata, India, December 10-14, 2013. Proceedings 423-429 2013 [Refereed]
Gaku Watanabe, Shinji Fukui, Keisuke Takechi, Yuji Iwahori, Robert J. Woodham
6th International Conference on Soft Computing and Intelligent Systems, and 13th International Symposium on Advanced Intelligence Systems, SCIS/ISIS 2012 1304-1307 Dec 2012
Tracking methods based on the particle filter frequently use the appearance information of the target object to calculate the likelihood. The method using it often fails in tracking when the target object intersects with other objects with similar...
Yuji Iwahori, Deepak Kumar, Takuya Nakagawa, M. K. Bhuyan
Smart Innovation, Systems and Technologies 16 355-363 Dec 2012
This paper proposes an analytical approach to make correct recognition between the true defect and the pseudo defect with visual inspection of the electronic board. Some classification approaches have already been proposed for the limited kinds of...
Advances in Knowledge-Based and Intelligent Information and Engineering Systems - 16th Annual KES Conference, San Sebastian, Spain, 10-12 September 2012 1740-1748 2012 [Refereed]
Shinji Fukui,Yasuchika Takeda,Gaku Watanabe,Yuji Iwahori,Robert J. Woodham
Advances in Knowledge-Based and Intelligent Information and Engineering Systems - 16th Annual KES Conference, San Sebastian, Spain, 10-12 September 2012 1758-1767 2012 [Refereed]
Yuji Iwahori,Kazuhiro Shibata,Haruki Kawanaka,Kenji Funahashi,Robert J. Woodham,Yoshinori Adachi
Advances in Knowledge-Based and Intelligent Information and Engineering Systems - 16th Annual KES Conference, San Sebastian, Spain, 10-12 September 2012 1778-1787 2012 [Refereed]
IEEJ Transactions on Industry Applications 131 Sep 2011
In this paper, we propose a part-based human detection method in which the faces and upper parts of human bodies are first detected separately and then merged. In a crowded scene, it is very difficult to merge the detected faces and upper body par...
IEEJ Transactions on Electronics, Information and Systems 131(5) 1083-1084 May 2011
This paper treats the case that a group of objects is tracked by a group of particles of the particle filter. When the object group separates, the particle filter may fail in tracking, or there may be objects which are not tracked by the filter. T...
IEEJ Transactions on Industry Applications 131(4) 475-481 Apr 2011
In this paper, we propose a part-based human detection method in which the faces and upper parts of human bodies are first detected separately and then merged. In a crowded scene, it is very difficult to merge the detected faces and upper body par...
IEEJ Transactions on Electronics, Information and Systems 131 1083-1084 Jan 2011
This paper treats the case that a group of objects is tracked by a group of particles of the particle filter. When the object group separates, the particle filter may fail in tracking, or there may be objects which are not tracked by the filter. T...
Debanga Raj Neog,Yuji Iwahori,Manas Kamal Bhuyan,Robert J. Woodham,Kunio Kasugai
Proceedings of the 5th Indian International Conference on Artificial Intelligence, IICAI 2011, Tumkur, Karnataka State, India, December 14-16, 2011 1006-1015 2011 [Refereed]
Knowledge-Based and Intelligent Information and Engineering Systems - 15th International Conference, KES 2011, Kaiserslautern, Germany, September 12-14, 2011, Proceedings, Part IV 80-88 2011 [Refereed]
Yasuchika Takeda,Shinji Fukui,Yuji Iwahori,Robert J. Woodham
Knowledge-Based and Intelligent Information and Engineering Systems - 15th International Conference, KES 2011, Kaiserslautern, Germany, September 12-14, 2011, Proceedings, Part IV 108-116 2011 [Refereed]
Knowledge-Based and Intelligent Information and Engineering Systems - 15th International Conference, KES 2011, Kaiserslautern, Germany, September 12-14, 2011, Proceedings, Part IV 117-125 2011 [Refereed]
ENDA Naoki, FUKUI Shinji, KURAHASHI Wataru, TAKECHI Keisuke, IWAHORI Yuji
IEEJ Transactions on Electronics, Information and Systems 130(9) 1588-1596 Sep 2010
This paper proposes an approach of robust tracking for crossing of similar pattern objects. It is based on the particle filter. As far as only appearance information of a target object is used for the particle filter, it fails in tracking the targ...
This paper presents a method for detecting people based on co-occurrence of appearanceand spatio-temporal features. In our method, Histograms of Oriented Gradients (HOG)are used as appearance features, and the results of pixel state analysis are u...
IEEJ Transactions on Electronics, Information and Systems 130 Jan 2010
This paper proposes an approach of robust tracking for crossing of similar pattern objects. It is based on the particle filter. As far as only appearance information of a target object is used for the particle filter, it fails in tracking the targ...
This paper presents a method for detecting people based on co-occurrence of appearance and spatio-temporal features. In our method, Histograms of Oriented Gradients (HOG) are used as appearance features, and the results of pixel state analysis are...
VBW (Vogel-Breu&ss;-Weickert) model is proposed as a method to recover 3D shape under the condition of point light source illumination and perspective projection. However, VBW model recovers the relative shape but there is a problem that the shape...
IEICE technical report. Signal processing 114(39) 25-30 May 2014
VBW (Vogel-Breu&ss;-Weickert) model is proposed as a method to recover 3D shape under the condition of point light source illumination and perspective projection. However, VBW model recovers the relative shape but there is a problem that the shape...
IEICE technical report. Image engineering 114(40) 25-30 May 2014
VBW (Vogel-Breu&ss;-Weickert) model is proposed as a method to recover 3D shape under the condition of point light source illumination and perspective projection. However, VBW model recovers the relative shape but there is a problem that the shape...
Technical report of IEICE. PRMU 114(41) 25-30 May 2014
VBW (Vogel-Breu&ss;-Weickert) model is proposed as a method to recover 3D shape under the condition of point light source illumination and perspective projection. However, VBW model recovers the relative shape but there is a problem that the shape...
A new shadow detection method is proposed in this paper. The proposed method is based on the shadow model. The model is constructed by features robust to illumination changes. The method uses four features: (1) the difference of the UV components ...
Technical report of IEICE. PRMU 113(431) 153-158 Feb 2014
A new shadow detection method is proposed in this paper. The proposed method is based on the shadow model. The model is constructed by features robust to illumination changes. The method uses four features: (1) the difference of the UV components ...
In the medical examination with an endoscope on the medical scene, the automatic polyp detection is aimed to support the manipulation of the endoscope. This paper proposes a method which the polyp is detected using Hessian filter. First, a region ...
DING Yi, IWAHORI Yuji, NAKAMURA Tsuyoshi, HE Lifeng, ITOH Hidenori
IEICE technical report 109(249) 115-120 Oct 2009
This paper describes a new approach for self-calibration and color image rendering using radial basis function (RBF) neural network. Most empirical approaches make use of a calibration object. Here, we require no calibration object to both shape r...
KAWANAKA Haruki, IWAHORI Yuji, WOODHAM Robert J., FUNAHASHI Kenji
IEICE technical report 106(260) 7-12 Sep 2006
We have proposed Neural Network Based Rendering to generate a realistic virtual image of an object under any light source direction and any viewing direction, according to the physical reflectance property of an actual object. This method can gene...
KAWANAKA Haruki, IWAHORI Yuji, WOODHAM Robert J., FUNAHASHI Kenji
IEICE technical report 106(262) 7-12 Sep 2006
We have proposed Neural Network Based Rendering to generate a realistic virtual image of an object under any light source direction and any viewing direction, according to the physical reflectance property of an actual object. This method can gene...
KAWANAKA Haruki, IWAHORI Yuji, WOODHAM Robert J., FUNAHASHI Kenji
IEICE technical report 106(264) 7-12 Sep 2006
We have proposed Neural Network Based Rendering to generate a realistic virtual image of an object under any light source direction and any viewing direction, according to the physical reflectance property of an actual object. This method can gene...
In this paper, we propose the new method to track the human head by using the location and color information. Some previous methods, which use multiple cameras, are performed inside two dimensional images. But, we expand it to the tracking in thre...
In this paper, we propose the new method to track the human head by using the location and color information. Some previous methods, which use multiple cameras, are performed inside two dimensional images. But, we expand it to the tracking in thre...
Three dimensional scene flow can be estimated from information of the object's surface and depth map of the scene based on camera parameters obtained by strong calibration. However, increasing the number of cameras increases labor of the calibrati...
To understand the fundamental principle of computer and network is indispensable in working actively in information society, because the information technology is being improved rapidly. We propose "Simulator for Learning Computer Literacy," the t...
Technical report of IEICE. PRMU 100(44) 23-30 May 2000
This paper proposes a new approach to recover the local sign of the Gaussian curvature using multiple shading images without information of the surface reflectance function and the directions of light sources. The method has some advantages that i...
Technical report of IEICE. Multimedia and virtual environment 99(723) 25-30 Mar 2000
This paper describes a new method to realize an interactive manipulation of virtual liquid using a virtual case. The proposed model represents the liquid in the free fall condition as particles, while it does that in the stay condition as volume. ...
MURAKAMI Masamitsu, IWAHORI Yuji, WOODHAM Robert J., ISHII Naohiro
IPSJ SIG Notes. CVIM 1997(31) 23-30 Mar 1997
This paper proposes a new photometric method to recover the local curvature sign using neural network. RBF neural network maps the image irradiances at the neighbor pixels for the test object taken from three different illuminating directions onto...
IEICE technical report. Neurocomputing 96(430) 143-150 Dec 1996
In early life, we can learn spoken words only by hearing them. This suggests that our learning process of spoken words is fundamentally an unsupervised learning process. However, it is very difficult to realize such the learning process using conv...
IEICE technical report. Neurocomputing 96(430) 151-158 Dec 1996
This paper proposes neural network based photometric stereo using the illumination planning, as one of the physics based vision approach. When we use the multiple light sources more than three, some of the light sources make cast shadow area for t...
This paper proposes a function which estimates the degree of dependence of an output unit on an input unit in a given multi- layer neural network.This evaluated value enables the estimation of the functional structure in a given network without af...
Information literacy becomes important in our ordinary lives, owing to recent advancement of the informalion technologies.Even schools and universities have had the courses for information literacy.On such the social background,the authors design ...
