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• NavCog3: An Evaluation of a Smartphone-Based Blind Indoor Navigation Assistant with Semantic Features in a Large-Scale Environment

  Daisuke Sato, Uran Oh, Kakuya Naito, Hironobu Takagi, Kris Kitani, Chieko Asakawa · 2017 · Proceedings of the 19th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS '17)

  This paper presents NavCog3, a smartphone-based indoor navigation assistant for people with visual impairments, evaluated at scale in a 21,000 m² shopping mall in Japan. Unlike many prior indoor navigation prototypes that were tested only in constrained lab environments, NavCog3…

  indoor navigation · blindness · visual impairment · wayfinding · Bluetooth beacons

• 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 · 2016 · Proceedings of the 13th International Web for All Conference (W4A)

  This extended abstract presents NavCog, an open-source iOS smartphone navigation system designed to assist people with visual impairments or blindness in navigating complex indoor and outdoor environments. While many blind people can independently traverse familiar routes by…

  indoor navigation · visual impairment · blindness · assistive technology · Bluetooth beacons

• WeAllWalk: An Annotated Data Set of Inertial Sensor Time Series from Blind Walkers

  German H. Flores, Roberto Manduchi · 2016 · Proceedings of the 18th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS '16)

  This paper introduces WeAllWalk, an openly accessible and annotated data set of inertial sensor time series collected from blind individuals walking through complex indoor routes. The data set addresses a critical gap in assistive navigation research: while step counting and…

  blindness · indoor navigation · wayfinding · inertial sensing · data collection

• NavCog: A Navigational Cognitive Assistant for the Blind

  Dragan Ahmetovic, Cole Gleason, Chengxiong Ruan, Kris Kitani, Hironobu Takagi, Chieko Asakawa · 2016 · Proceedings of the 18th International Conference on Human-Computer Interaction with Mobile Devices and Services (MobileHCI '16)

  This paper introduces NavCog, an iPhone-based turn-by-turn navigation assistant designed to guide blind users through unfamiliar indoor and outdoor environments without requiring expensive infrastructure or structural modifications. The authors argue that while blind travellers…

  blind navigation · indoor navigation · wayfinding · orientation and mobility · assistive technology

• Accessible On-line Graphics

  Anuradha Madugalla · 2015 · Proceedings of the 12th International Web for All Conference (W4A)

  This is an alternate ACM Digital Library entry (DOI: 10.1145/2745555.2746672) for the same paper also catalogued under DOI: 10.1145/2578726.2746672. Please see the full review under that DOI for complete summary, key findings, and relevance analysis. The paper proposes…

  blindness · tactile graphics · accessible graphics · floor plans · SVG

• Accessible On-line Graphics

  Anuradha Madugalla · 2015 · Proceedings of the 12th International Web for All Conference (W4A)

  This doctoral consortium paper proposes semi-automated methods for transcribing online graphics — particularly floor plans — into accessible formats for blind users. The research is motivated by the fundamental problem that screen readers and voice synthesisers can only process…

  blindness · tactile graphics · accessible graphics · floor plans · SVG

• Path-Guided Indoor Navigation for the Visually Impaired Using Minimal Building Retrofitting

  Dhruv Jain · 2014 · Proceedings of the 16th International ACM SIGACCESS Conference on Computers & Accessibility (ASSETS 2014)

  This paper presents the design and evaluation of a cellphone-based indoor navigation system that provides step-by-step path guidance for visually impaired users in unfamiliar buildings with minimal infrastructure requirements. The system combines infrared (IR) beacons mounted at…

  indoor navigation · visual impairment · wayfinding · assistive technology · infrared

• "Pray Before You Step Out": Describing Personal and Situational Blind Navigation Behaviors

  Michele A. Williams, Amy Hurst, Shaun K. Kane · 2013 · Proceedings of the 15th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS)

  This paper presents a formative study exploring how 30 adults with vision impairments use technology and personal strategies to navigate both indoor and outdoor environments. Rather than introducing new navigation technology, the research aims to build a richer understanding of…

  visual impairment · blindness · navigation · orientation and mobility · wayfinding

• Automated Description Generation for Indoor Floor Maps

  Devi A. Paladugu, Hima Bindu Maguluri, Qiongjie Tian, Baoxin Li · 2012 · Proceedings of the 14th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS 2012)

  This demonstration paper presents a prototype system that automatically generates verbal descriptions of indoor floor maps to support navigation for people with visual impairments. The system addresses a practical gap: while tools like canes, guide dogs, and GPS devices help…

  visual impairment · indoor navigation · wayfinding · image processing · floor plans

• Situation-based Indoor Wayfinding System for the Visually Impaired

  Eunjeong Ko, Jin Sun Ju, Eun Yi Kim · 2011 · The Proceedings of the 13th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS)

  This paper presents an indoor wayfinding system for visually impaired people that uses situation-aware color codes affixed to building walls to guide users to destinations in unfamiliar environments. The key innovation is a situation-based approach: rather than providing all…

  blindness and low vision · indoor navigation · wayfinding · computer vision · assistive technology

• Supporting Spatial Awareness and Independent Wayfinding for Pedestrians with Visual Impairments

  Rayoung Yang, Sangmi Park, Sonali R. Mishra, Zhenan Hong, Clint Newsom, Hyeon Joo, Erik Hofer, Mark W. Newman · 2011 · The Proceedings of the 13th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS)

  This paper presents Talking Points 3 (TP3), a location- and orientation-aware smartphone system designed to increase the "legibility" of indoor environments for pedestrians with visual impairments, fostering spatial awareness rather than simply providing turn-by-turn directions.…

  blindness and low vision · wayfinding · indoor navigation · spatial cognition · mobile accessibility

• Improving Public Transit Accessibility for Blind Riders: A Train Station Navigation Assistant

  Markus Guentert · 2011 · The Proceedings of the 13th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS 2011)

  This short paper presents a prototype iPhone application designed to help blind people navigate inside train stations — an environment where GPS is unavailable and orientation is particularly challenging. The author's motivation comes from interviews with blind users and a…

  blindness · indoor navigation · public transit · iPhone · wayfinding

• Accessible Indoor Navigation

  Kyle Montague · 2010 · Proceedings of the 12th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS 2010)

  This doctoral consortium paper presents early-stage research on designing an accessible indoor navigation application for disabled users. Montague identifies a key gap: while outdoor navigation benefits from GPS, indoor wayfinding remains a significant challenge because GPS is…

  indoor navigation · wayfinding · adaptive interface · mobile accessibility · assistive technology

• WADER: a novel wayfinding system with deviation recovery for individuals with cognitive impairments

  Shih-Kai Tsai · 2007 · Proceedings of the 9th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS '07)

  This short ASSETS 2007 poster paper from Shih-Kai Tsai at Chung Yuan Christian University in Taiwan presents WADER (Wayfinding system with DEviation Recovery), a prototype indoor wayfinding system aimed at individuals with cognitive impairments — explicitly named populations…

  wayfinding · indoor navigation · QR code · cognitive accessibility · cognitive disabilities

• Interactive Tracking of Movable Objects for the Blind on the Basis of Environment Models and Perception-Oriented Object Recognition Methods

  Andreas Hub, Tim Hartter, Thomas Ertl · 2006 · Proceedings of the 8th International ACM SIGACCESS Conference on Computers and Accessibility (Assets '06)

  This paper from the University of Stuttgart presents advances to an indoor navigation and object identification system for blind and deafblind users. The system combines a stereo camera and 3D inertial sensor mounted on a bicycle helmet with detailed 3D environment models of…

  indoor navigation · object recognition · blind users · computer vision · assistive technology

• Indoor Wayfinding: Developing a Functional Interface for Individuals with Cognitive Impairments

  Alan L. Liu, Harlan Hile, Henry Kautz, Gaetano Borriello, Pat A. Brown, Mark Harniss, Kurt Johnson · 2006 · Proceedings of the 8th International ACM SIGACCESS Conference on Computers and Accessibility (Assets '06)

  This paper from the University of Washington describes the design and user evaluation of an indoor wayfinding system for individuals with cognitive impairments, including traumatic brain injury, Down syndrome, pervasive developmental disorder, and cerebral palsy. Rather than…

  cognitive impairment · wayfinding · indoor navigation · wizard of oz · multimodal interface

• A Rollator-Mounted Wayfinding System for the Elderly: A Smart World Perspective

  Aliasgar Kutiyanawala, Vladimir Kulyukin, Edmund LoPresti · 2006 · Proceedings of the 8th International ACM SIGACCESS Conference on Computers and Accessibility (Assets '06)

  This paper presents the iWalker, a rollator-mounted wayfinding system designed to help elderly individuals with cognitive and visual impairments navigate indoor environments independently. The system adopts a "smart world" perspective, where intelligence is distributed between…

  wayfinding · aging · assistive technology · robotics · cognitive impairment

• Talking Braille: A Wireless Ubiquitous Computing Network for Orientation and Wayfinding

  David A. Ross, Alexander Lightman · 2005 · Proceedings of the 7th International ACM SIGACCESS Conference on Computers and Accessibility (Assets '05)

  This paper presents the design and initial evaluation of the Talking Braille system, a wireless ubiquitous computing network designed to help people with vision loss navigate indoor public spaces. The system is built around the "Cyber Crumb" concept: tiny, inexpensive…

  wayfinding · orientation · blindness · ubiquitous computing · indoor navigation

• Design and Development of an Indoor Navigation and Object Identification System for the Blind

  Andreas Hub, Joachim Diepstraten, Thomas Ertl · 2003 · Proceedings of the 6th International ACM SIGACCESS Conference on Computers and Accessibility (Assets '04)

  This paper presents a multi-sensor orientation assistant for blind users navigating unknown indoor environments. The system addresses three core problems identified by blind users: determining one's position, determining head direction and movement direction, and identifying…

  indoor navigation · blindness and low vision · object recognition · orientation and mobility · mobile technology