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• Mind Your Crossings: Mining GIS Imagery for Crosswalk Localization

  Dragan Ahmetovic, Roberto Manduchi, James M. Coughlan, Sergio Mascetti · 2017 · ACM Transactions on Accessible Computing (TACCESS)

  This paper presents a computer vision system for automatically detecting and localizing zebra crosswalks in urban environments by mining existing geospatial image databases, specifically Google satellite imagery and Google Street View. The motivation is that blind pedestrians…

  visual impairment · orientation and mobility · computer vision · navigation · crowdsourcing

• A Pilot Deployment of an Online Tool for Large-Scale Virtual Auditing of Urban Accessibility

  Manaswi Saha, Kotaro Hara, Soheil Behnezhad, Anthony Li, Michael Saugstad, Hanuma Maddali, Sage Chen, Jon E. Froehlich · 2017 · Proceedings of the 19th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS '17)

  This demonstration paper introduces Project Sidewalk, a web-based tool that enables anyone with an internet connection to remotely audit urban sidewalk accessibility by virtually walking through city streets using Google Street View. The tool addresses a significant gap in…

  crowdsourcing · urban accessibility · GIS · sidewalk accessibility · curb ramps

• Zebra Crossing Spotter: Automatic Population of Spatial Databases for Increased Safety of Blind Travelers

  Dragan Ahmetovic, Roberto Manduchi, James M. Coughlan, Sergio Mascetti · 2015 · ASSETS '15: Proceedings of the 17th International ACM SIGACCESS Conference on Computers & Accessibility

  This paper presents a computer vision system that automatically detects zebra crosswalks by mining satellite imagery and Google Street View, with the goal of augmenting geographic information systems (GIS) to help blind travelers plan safer routes. Knowing crosswalk locations is…

  visual impairment · navigation · computer vision · pedestrian crossings · wayfinding

• Development of Dialogue Systems for a Mobility Aid for Blind People: Initial Design and Usability Testing

  Thomas Strothotte, Steffi Fritz, Rainer Michel, Andreas Raab, Helen Petrie, Valerie Johnson, Lars Reichert, Axel Schalt · 1996 · Proceedings of the Second Annual ACM Conference on Assistive Technologies (Assets '96)

  This paper presents the MoBIC Travel Aid (MoTA), an EU-funded system designed to increase independent mobility for blind and elderly travellers by combining Geographic Information Systems (GIS) with the Global Positioning System (GPS). The system has two complementary…

  blindness and low vision · navigation · GPS · GIS · orientation and mobility

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