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• Achieving Practical and Accurate Indoor Navigation for People with Visual Impairments

  Dragan Ahmetovic, Masayuki Murata, Cole Gleason, Erin Brady, Hironobu Takagi, Kris Kitani, Chieko Asakawa · 2017 · Proceedings of the 14th International Web for All Conference (W4A)

  This paper presents improvements to the NavCog indoor navigation system that achieve sub-meter localization accuracy for blind pedestrians while significantly reducing the infrastructure cost of deploying BLE (Bluetooth Low Energy) beacon networks. GPS provides outdoor…

  indoor navigation · visual impairment · blindness · BLE beacons · Bluetooth Low Energy

• Assessment of Semantic Taxonomies for Blind Indoor Navigation Based on a Shopping Center Use Case

  J. Eduardo Pérez, Myriam Arrue, Masatomo Kobayashi, Hironobu Takagi, Chieko Asakawa · 2017 · Proceedings of the 14th International Web for All Conference (W4A)

  This paper investigates what environmental information is needed to support effective indoor navigation for visually impaired people, and whether existing geographic data specifications provide adequate semantic vocabularies for this purpose. The researchers surveyed three…

  indoor navigation · blindness · wayfinding · location-based services · semantic taxonomy

• LuzDeploy: A Collective Action System for Installing Navigation Infrastructure for Blind People

  Cole Gleason, Dragan Ahmetovic, Carlos Toxtli, Saiph Savage, Jeffrey P. Bigham, Chieko Asakawa · 2017 · Proceedings of the 14th International Web for All Conference (W4A)

  This demonstration paper presents LuzDeploy, a system designed to solve a practical bottleneck in deploying indoor navigation infrastructure for blind people: the difficulty of recruiting, training, and coordinating enough personnel to install Bluetooth Low Energy (BLE) beacons…

  blindness · indoor navigation · crowdsourcing · BLE beacons · assistive technology

• Identifying Visual Cues to Improve Independent Indoor Navigation for Blind Individuals

  Cameron Tyler Cassidy · 2017 · Proceedings of the 19th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS)

  This student research competition paper proposes a novel approach to indoor navigation for blind individuals that focuses on providing environmental awareness and a "sense of space" rather than traditional point-to-point directions. The author argues that most existing…

  indoor navigation · blindness · computer vision · eye tracking · wayfinding

• Crowdsourcing the Installation and Maintenance of Indoor Navigation Infrastructure

  Cole Gleason · 2017 · Proceedings of the 19th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS '17)

  This student research competition paper presents LuzDeploy, a system designed to solve a major barrier to the adoption of indoor navigation systems for people with visual impairments: the high cost and expertise required to install and maintain the necessary infrastructure.…

  indoor navigation · crowdsourcing · Bluetooth beacons · blindness · wayfinding

• 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

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