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• AfricaSign -- A Crowd-sourcing Platform for the Documentation of STEM Vocabulary in African Sign Languages

  Abdelhadi Soudi, Kristof Van Laerhoven, Elmostafa Bou-Souf · 2019 · Proceedings of the 21st International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS)

  This demonstration paper presents AfricaSign, a web-based crowdsourcing platform designed to enable African Deaf communities to document their endangered sign languages, with a focus on early-grade and STEM vocabulary. Most African sign languages are severely under-studied and…

  sign language · Africa · endangered languages · crowdsourcing · signing avatar

• Deep Learning for Automatically Detecting Sidewalk Accessibility Problems Using Streetscape Imagery

  Galen Weld, Esther Jang, Anthony Li, Aileen Zeng, Kurtis Heimerl, Jon E. Froehlich · 2019 · Proceedings of the 21st International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS 2019)

  This paper presents the first application of deep learning to automatically assess sidewalk accessibility from Google Street View (GSV) panoramas, addressing four types of accessibility problems: curb ramps, missing curb ramps, sidewalk obstructions, and surface problems.…

  computer vision · deep learning · sidewalk accessibility · curb ramps · crowdsourcing

• Automatic Generation and Evaluation of Usable and Secure Audio reCAPTCHA

  Mohit Jain, Rohun Tripathi, Ishita Bhansali, Pratyush Kumar · 2019 · Proceedings of the 21st International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS 2019)

  This paper presents reCAPGen, a system that automatically generates usable and secure audio CAPTCHAs by leveraging the gap between human and machine speech recognition abilities. Visual CAPTCHAs — the dominant form of online human verification — are inherently inaccessible to…

  CAPTCHA · audio accessibility · blind · visual impairment · web accessibility

• StateLens: A Reverse Engineering Solution for Making Existing Dynamic Touchscreens Accessible

  Anhong Guo, Junhan Kong, Michael Rivera, Frank F. Xu, Jeffrey P. Bigham · 2019 · ACM Symposium on User Interface Software and Technology

  This paper presents StateLens, a three-part system that makes existing dynamic touchscreen interfaces accessible to blind users without requiring any modification to the touchscreen hardware or software. Blind people routinely encounter inaccessible touchscreens on coffee…

  touchscreen accessibility · blindness · computer vision · crowdsourcing · reverse engineering

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