Hironobu Takagi  Hironobu Takagi photo       

contact information

Senior Manager, Accessibility & Aging, IBM Research - Tokyo
Toyosu, Tokyo, Japan

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Professional Associations

Professional Associations:  ACM SIGACCESS


2016

Supporting Orientation of People with Visual Impairment: Analysis of Large Scale Usage Data
Hernisa Kacorri, Sergio Mascetti, Andrea Gerino, Dragan Ahmetovic, Hironobu Takagi, Chieko Asakawa
Proceedings of the 18th International ACM SIGACCESS Conference on Computers and Accessibility, pp. 151--159, 2016

NavCog: a navigational cognitive assistant for the blind
Dragan Ahmetovic, Cole Gleason, Chengxiong Ruan, Kris Kitani, Hironobu Takagi, Chieko Asakawa
Proceedings of the 18th International Conference on Human-Computer Interaction with Mobile Devices and Services, pp. 90--99, 2016

NavCog: turn-by-turn smartphone navigation assistant for people with visual impairments or blindness
Dragan Ahmetovic, Cole Gleason, Kris M Kitani, Hironobu Takagi, Chieko Asakawa
Proceedings of the 13th Web for All Conference, pp. 9, 2016


2015

Motivating Multi-Generational Crowd Workers in Social-Purpose Work
M. Kobayashi, S. Arita, T. Itoko, S. Saito, H. Takagi
Proceedings of CSCW '15, pp. 1813--1824, ACM, 2015

Recognizing hand-object interactions in wearable camera videos
Tatsuya Ishihara, Kris M Kitani, Wei-Chiu Ma, Hironobu Takagi, Chieko Asahawa
Image Processing (ICIP), 2015 IEEE International Conference on, pp. 1349--1353

Evaluation of real-time captioning by machine recognition with human support
Hironobu Takagi, Takashi Itoh, Kaoru Shinkawa
Proceedings of the 12th Web for All Conference, pp. 5, 2015

Exploring Interface Design for Independent Navigation by People with Visual Impairments
Erin L Brady, Daisuke Sato, Chengxiong Ruan, Hironobu Takagi, Chieko Asakawa
Proceedings of the 17th International ACM SIGACCESS Conference on Computers \& Accessibility, pp. 387--388, 2015


2014

Easy Handheld Training: Interactive Self-learning App for Elderly Smartphone Novices
Yosuke Toyota, Daisuke Sato, Tsuneo Kato, Hironobu Takagi
Universal Access in Human-Computer Interaction. Aging and Assistive Environments, pp. 203--214, Springer, 2014

Involving Senior Workers in Crowdsourced Proofreading
T. Itoko, S. Arita, M. Kobayashi, H. Takagi
Proceedings of HCI International 2014, pp. 106--117, Springer

Skill Development Framework for Micro-Tasking
S. Saito, T. Watanabe, M. Kobayashi, H. Takagi
Proceedings of HCI International 2014, pp. 400--409, Springer


Remote IT education for senior citizens
Hironobu Takagi, Akihiro Kosugi, Tatsuya Ishihara, Kentarou Fukuda
Proceedings of the 11th Web for All Conference, pp. 41, 2014


2013

Accessible photo album: enhancing the photo sharing experience for people with visual impairment
Susumu Harada, Daisuke Sato, Dustin W. Adams, Sri Kurniawan, Hironobu Takagi, Chieko Asakawa
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems, pp. 2127--2136, ACM, 2013
Abstract

Investigation on work motivation of Japanese seniors and skill discovery from their r\'esum\'es
Takahiro Miura, Atsushi Hiyama, Masatomo Kobayashi, Hironobu Takagi, Naomi Yatomi, Michitaka Hirose
System Integration (SII), 2013 IEEE/SICE International Symposium on, pp. 190--197

Lessons learned from crowd accessibility services
Hironobu Takagi, Susumu Harada, Daisuke Sato, Chieko Asakawa
Human-Computer Interaction--INTERACT 2013, pp. 587--604, Springer


Characteristics of Elderly User Behavior on Mobile Multi-touch Devices
Susumu Harada, Daisuke Sato, Hironobu Takagi, Chieko Asakawa
Human-Computer Interaction--INTERACT 2013, pp. 323--341, Springer

How Unfamiliar Words in Smartphone Manuals Affect Senior Citizens
T. Ishihara, M. Kobayashi, H. Takagi, C. Asakawa
Proceedings of HCI International 2013, pp. 636--642, Springer

Crowdsourcing platform for workplace accessibility
Hironobu Takagi, Akihiro Kosugi, Shin Saito, Masayoshi Teraguchi
Proceedings of the 10th International Cross-Disciplinary Conference on Web Accessibility, pp. 28, 2013

Age-based Task Specialization for Crowdsourced Proofreading
M. Kobayashi, T. Ishihara, T. Itoko, H. Takagi, C. Asakawa
Proceedings of HCI International 2013, pp. 104--112, Springer

Question First: Passive Interaction Model for Gathering Experience and Knowledge from the Elderly
A. Hiyama, Y. Nagai, M. Kobayashi, H. Takagi, M. Hirose
Proceedings of PerCol 2013, pp. 151--156, IEEE


2012

Beyond Discussions: Designing for Sociability and Structure
K Ehrlich, S Rohall, S Ross, D Gruen, T Ratchford, J Patterson, H Takagi, T Ishihara, A Kosugi
CSCW'12 Workshop on Collective Intelligence as Community Discourse and Action, 2012

Transforming Japanese archives into accessible digital books
Tatsuya Ishihara, Toshinari Itoko, Daisuke Sato, Asaf Tzadok, Hironobu Takagi
Proceedings of the 12th ACM/IEEE-CS joint conference on Digital Libraries, pp. 91--100, 2012


2011

How Voice Augmentation Supports Elderly Web Users
D. Sato, M. Kobayashi, H. Takagi, C. Asakawa, J. Tanaka
Proceedings of ASSETS '11, pp. 155--162, ACM, 2011

Sasayaki: Augmented Voice Web Browsing Experience
D. Sato, S. Zhu, M. Kobayashi, H. Takagi, C. Asakawa
Proceedings of CHI 2011, pp. 2769--2778, ACM
Honorable Mention Paper

On the audio representation of radial direction
Susumu Harada, Hironobu Takagi, Chieko Asakawa
Proceedings of the 2011 annual conference on Human factors in computing systems, pp. 2779-2788, ACM
Honorable Mention Award (top 5%) recipient


2010

Text Entry for People with Visual Impairments
Chieko Asakawa, Hironobu Takagi
Text Entry Systems: Mobility, Accessibility, Universality, 133, Morgan Kaufmann, 2010

Describing Online Videos with Text-to-Speech Narration
M. Kobayashi, T. Nagano, K. Fukuda, H. Takagi
Proceedings of the 2010 International Cross Disciplinary Conference on Web Accessibility (W4A), pp. 1-2

Are Synthesized Video Descriptions Acceptable?
M. Kobayashi, T. O'Connell, B. Gould, H. Takagi, C. Asakawa
Proceedings of ASSETS '10, pp. 163--170, ACM, 2010

Exploratory Analysis of Collaborative Web Accessibility Improvement
D. Sato, H. Takagi, M. Kobayashi, S. Kawanaka, C. Asakawa
TACCESS 3(2), 5, ACM, 2010
ACM ID: 1857922

Sasayaki: an augmented voice-based web browsing experience
Shaojian Zhu, Daisuke Sato, Hironobu Takagi, Chieko Asakawa
Proceedings of the 12th international ACM SIGACCESS conference on Computers and accessibility, pp. 279--280, 2010

Social Accessibility: The Challenge of Improving Web Accessibility through Collaboration
D. Sato, M. Kobayashi, H. Takagi, C. Asakawa
Proceedings of W4A 2010, pp. 28, ACM
ACM ID: 1806024


2009

Providing Synthesized Audio Description for Online Videos
M. Kobayashi, K. Fukuda, H. Takagi, C. Asakawa
Proceedings of ASSETS '09, pp. 249--250, ACM, 2009

What’s next? a visual editor for correcting reading order
Daisuke Sato, Masatomo Kobayashi, Hironobu Takagi, Chieko Asakawa
Human-Computer Interaction--INTERACT 2009, pp. 364--377, Springer

Accessibility Commons: A Metadata Repository for Web Accessibility
S. Kawanaka, M. Kobayashi, H. Takagi, C. Asakawa
SIGWEB Newsletter Summer(Summer), 1, ACM, 2009

Collaborative Web Accessibility Improvement: Challenges and Possibilities
H. Takagi, S. Kawanaka, M. Kobayashi, D. Sato, C. Asakawa
Proceedings of ASSETS '09, pp. 195--202, ACM, 2009
Best Paper


2008

Transcoding
Chieko Asakawa, Hironobu Takagi
Web Accessibility, pp. 231--260, Springer, 2008

Social Accessibility: Achieving Accessibility through Collaborative Metadata Authoring
H. Takagi, S. Kawanaka, M. Kobayashi, T. Itoh, C. Asakawa
Proceedings of ASSETS '08, pp. 193--200, ACM, 2008

Accessibility commons: a metadata infrastructure for web accessibility
Shinya Kawanaka, Yevgen Borodin, Jeffrey P Bigham, Darren Lunn, Hironobu Takagi, Chieko Asakawa
Proceedings of the 10th international ACM SIGACCESS conference on Computers and accessibility, pp. 153--160, 2008


2007

Technology advances and standardization toward accessible business graphics
Hironobu Takagi, Tatsuya Ishihara
Universal Access in Human-Computer Interaction. Applications and Services, pp. 426--435, Springer, 2007

Analysis of navigability of Web applications for improving blind usability
Hironobu Takagi, Shin Saito, Kentarou Fukuda, Chieko Asakawa
ACM Transactions on Computer-Human Interaction (TOCHI) 14(3), 13, ACM, 2007

Making multimedia internet content accessible and usable
Hisashi Miyashita, Hironobu Takagi, Daisuke Sato, Chieko Asakawa
Proceedings of the 4th International Conference on Universal Access in Human-Computer Interaction: Applications and Services, pp. 98--107, Springer Berlin Heidelberg, 2007

Accessibility evaluation for multimedia content
Chieko Asakawa, Takashi Itoh, Hironobu Takagi, Hisashi Miyashita
Universal Access in Human-Computer Interaction. Applications and Services, pp. 11--19, Springer, 2007

aiBrowser for multimedia: introducing multimedia content accessibility for visually impaired users
Hisashi Miyashita, Daisuke Sato, Hironobu Takagi, Chieko Asakawa
Proceedings of the 9th International ACM SIGACCESS Conference on Computers and Accessibility, pp. 91–98, ACM, 2007
Abstract   ACM ID: 1296860

Automatic accessibility transcoding for Flash content
Daisuke Sato, Hisashi Miyashita, Hironobu Takagi, Chieko Asakawa
Proceedings of the 9th International ACM SIGACCESS Conference on Computers and Accessibility, pp. 35–42, ACM, 2007
Abstract   ACM ID: 1296852

Making multimedia content accessible for screen reader users
Hisashi Miyashita, Daisuke Sato, Hironobu Takagi, Chieko Asakawa
Proceedings of the 2007 International Cross-Disciplinary Conference on Web Accessibility (W4A), pp. 126–127, ACM
Abstract   ACM ID: 1243443


2006

Accessibility evaluation based on machine learning technique
Daisuke Sato, Hironobu Takagi, Chieko Asakawa
Proceedings of the 8th international ACM SIGACCESS conference on Computers and accessibility, pp. 253--254, 2006

Analyzing visual layout for a non-visual presentation-document interface
Tatsuya Ishihara, Hironobu Takagi, Takashi Itoh, Chieko Asakawa
Proceedings of the 8th international ACM SIGACCESS conference on Computers and accessibility, pp. 165--172, 2006

Transforming flash to XML for accessibility evaluations
Shin Saito, Hironobu Takagi, Chieko Asakawa
Proceedings of the 8th international ACM SIGACCESS conference on Computers and accessibility, pp. 157--164, 2006


2005

Proposing new metrics to evaluate web usability for the blind
Kentarou Fukuda, Shin Saito, Hironobu Takagi, Chieko Asakawa
CHI'05 extended abstracts on Human factors in computing systems, pp. 1387--1390, 2005


2004

Web accessibility technology at TRL
J Maeda, K Fukuda, H Takagi, C Asakawa
IBM Research and Development Journal 48(5/6), 2004

Accessibility designer: visualizing usability for the blind
Hironobu Takagi, Chieko Asakawa, Kentarou Fukuda, Junji Maeda
ACM SIGACCESS Accessibility and Computing, pp. 177--184, 2004

Web accessibility technology at the IBM Tokyo Research Laboratory
Junji Maeda, Kentarou Fukuda, Hironobu Takagi, Chieko Asakawa
IBM journal of research and development 48(5.6), 735--749, IBM, 2004


2003

WebDigest: layout-preserving visually enhanced Web pages
Junji Maeda, Kentarou Fukuda, Hironobu Takagi, Chieko Asakawa
Applications and the Internet, 2003. Proceedings. 2003 Symposium on, pp. 418--421

Maximum listening speeds for the blind
Chieko Asakawa, Hironobu Takagi, Shuichi Ino, Tohru Ifukube
2003 - smartech.gatech.edu, Georgia Institute of Technology


2002

The Highest and the Most Suitable Listening Rate for the Blind in the Screen Reading Process
CHIEKO Asakawa, HIRONOBU Takagi, SHUICHI Ino, TOORU Ifukube
Proc. Human Interface Symposium, pp. 543--546, 2002

Auditory and tactile interfaces for representing the visual effects on the web
Chieko Asakawa, Hironobu Takagi, Shuichi Ino, Tohru Ifukube
Proceedings of the fifth international ACM conference on Assistive technologies, pp. 65--72, 2002

Site-wide annotation: reconstructing existing pages to be accessible
Hironobu Takagi, Chieko Asakawa, Kentarou Fukuda, Junji Maeda
Proceedings of the fifth international ACM conference on Assistive technologies, pp. 81--88, 2002


2000

Transcoding proxy for nonvisual web access
Hironobu Takagi, Chieko Asakawa
Proceedings of the fourth international ACM conference on Assistive technologies, pp. 164--171, 2000

Annotation-based transcoding for nonvisual web access
Chieko Asakawa, Hironobu Takagi
Proceedings of the fourth international ACM conference on Assistive technologies, pp. 172--179, 2000


Year Unknown

Layout Group Extraction fromWeb Content for Effective Adaptation
K Fukuda, H Takagi, J Maeda, C Asakawa
Technical Report, IBM Research Report, 0