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• WebSight: Using AR and WebGL shaders to assist the visually impaired

  Dan Ruta, Louis Jordan, Tom James Fox, Rich Boakes · 2018 · Proceedings of the 15th International Web for All Conference (W4A 2018)

  This demonstration paper presents WebSight, a browser-based augmented reality system that uses WebGL shaders to process a smartphone’s live camera feed in real time, enhancing visual features to assist people with low vision in navigating real-world environments. An estimated…

  augmented reality · low vision · visual impairment · WebGL · edge detection

• Extraction of Tabular Data from Document Images

  Manolis Vasileiadis, Nikolaos Kaklanis, Konstantinos Votis, Dimitrios Tzovaras · 2017 · Proceedings of the 14th International Web for All Conference (W4A)

  This demonstration paper presents an open-source tool for automatically detecting and extracting tabular data from document images — both scanned and digitally created — and converting them into accessible HTML format. The work addresses a significant accessibility gap: tables…

  document accessibility · OCR · table recognition · visual impairment · document conversion

• 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

• Marker-Assisted Recognition of Dynamic Content in Public Spaces

  Andréa Britto Mattos, Ricardo Herrmann, Carlos Cardonha, Diego Gallo, Priscilla Avegliano, Sergio Borger · 2014 · Proceedings of the 11th Web for All Conference (W4A)

  This paper from IBM Research Brazil presents an image processing system that helps visually impaired and situationally disabled people (such as tourists in foreign countries) recognize dynamic content displayed on public information boards. The system addresses a common…

  computer vision · visual impairment · object recognition · fiducial markers · public spaces

• New Tools for Automating Tactile Geographic Map Translation

  Nizar Bouhlel, Anis Rojbi · 2014 · Proceedings of the 16th International ACM SIGACCESS Conference on Computers & Accessibility (ASSETS)

  This demo paper presents a Matlab-based software tool that semi-automates the conversion of visual geographic maps into tactile versions suitable for blind students. Tactile graphics are the most effective modality for blind people to comprehend graphical images, but converting…

  tactile graphics · blindness · braille · image processing · OCR

• 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

• Evaluation of Onscreen Precompensation Algorithms for Computer Users with Visual Aberrations

  Miguel Alonso, Armando Barreto, Julie A. Jacko, Malek Adjouadi · 2007 · Proceedings of the 9th International ACM SIGACCESS Conference on Computers and Accessibility (Assets '07)

  This paper from Florida International University and Georgia Institute of Technology presents the results of human subject testing of precompensation algorithms designed to improve onscreen image quality for computer users with visual aberrations. The approach works analogously…

  low vision · visual aberration · precompensation · image processing · deconvolution

• Automated tactile graphics translation: in the field

  Chandrika Jayant, Matt Renzelmann, Dana Wen, Satria Krisnandi, Richard Ladner, Dan Comden · 2007 · Proceedings of the 9th International ACM SIGACCESS Conference on Computers and Accessibility (Assets '07)

  This paper describes two years of field work extending the Tactile Graphics Assistant (TGA), a system developed at the University of Washington to automate the translation of figures from mathematics, science, and engineering (STEM) textbooks into embossed tactile graphics for…

  tactile graphics · Braille · STEM accessibility · blindness and low vision · image processing

• A Multi-domain Approach for Enhancing Text Display for Users with Visual Aberrations

  Miguel Alonso, Armando Barreto, Julie A. Jacko, Malek Adjouadi · 2006 · Proceedings of the 8th International ACM SIGACCESS Conference on Computers and Accessibility (Assets '06)

  This paper from Florida International University and Georgia Institute of Technology presents an algorithm for enhancing text displayed on computer screens for users with high-order visual aberrations such as keratoconus — conditions that cannot be fully corrected with standard…

  low vision · visual aberrations · image processing · pre-compensation · refractive errors

• Accommodating Color Blind Computer Users

  Luke Jefferson, Richard Harvey · 2006 · Proceedings of the 8th International ACM SIGACCESS Conference on Computers and Accessibility (Assets '06)

  This paper from the University of East Anglia presents an algorithm for recoloring digital images and documents so that color information is preserved for color blind viewers, particularly dichromats (people missing one type of cone cell). The algorithm addresses a fundamental…

  color vision deficiency · color blindness · dichromacy · color remapping · color contrast

• Verification of Computer Display Pre-compensation for Visual Aberrations in an Artificial Eye

  Miguel Alonso Jr., Armando Barreto, Julie A. Jacko, Malek Adjouadi · 2005 · Proceedings of the 7th International ACM SIGACCESS Conference on Computers and Accessibility (Assets '05)

  This paper presents experimental verification that computer display images can be pre-compensated to counteract the visual aberrations present in an optical system, specifically tested using a constructed artificial eye. The research builds on earlier theoretical work by Alonso…

  low vision · image processing · display technology · visual impairment · optical devices

• Automating Tactile Graphics Translation

  Richard E. Ladner, Melody Y. Ivory, Rajesh Rao, Sheryl Burgstahler, Dan Comden, Sangyun Hahn, Matthew Renzelmann, Satria Krisnandi, Mahalakshmi Ramasamy, Beverly Slabosky, Andrew Martin, Amelia Lacenski, Stuart Olsen, Dmitri Groce · 2005 · Proceedings of the 7th International ACM SIGACCESS Conference on Computers and Accessibility (Assets '05)

  This paper addresses the critical shortage of tactile graphics available to blind students in mathematics, science, and engineering (MSE) courses. Postsecondary science textbooks may have images on half their pages — sometimes up to 500 images per book — yet these graphical…

  tactile graphics · braille · STEM accessibility · image processing · machine learning

• Automatic Production of Tactile Graphics from Scalable Vector Graphics

  Stephen E. Krufka, Kenneth E. Barner · 2005 · Proceedings of the 7th International ACM SIGACCESS Conference on Computers and Accessibility (Assets '05)

  This paper from the University of Delaware presents a method for automatically converting Scalable Vector Graphics (SVG) into tactile representations for blind users using a Braille embosser. The key innovation exploits the hierarchical tree structure inherent in vector graphics…

  tactile graphics · blindness · scalable vector graphics · braille embosser · image accessibility

• Image Pre-Compensation to Facilitate Computer Access for Users with Refractive Errors

  Miguel Alonso, Armando Barreto, J. Gualberto Cremades · 2003 · Proceedings of the 6th International ACM SIGACCESS Conference on Computers and Accessibility (Assets '04)

  This paper presents a novel approach to improving computer access for people with refractive visual errors by pre-compensating displayed images using knowledge of the user's specific optical aberration. The core insight is that the human eye can be modelled as a Linear Time…

  low vision · visual impairment · refractive error · image processing · visual acuity

• Tactile Imaging Using Watershed-Based Image Segmentation

  Sergio E. Hernandez, Kenneth E. Barner · 2000 · Proceedings of the Fourth International ACM Conference on Assistive Technologies (Assets '00)

  This paper from the University of Delaware proposes a new image segmentation method for automatically converting visual images into tactile representations suitable for display on tactile devices such as microcapsule (swell) paper. The core problem addressed is that existing…

  tactile graphics · image processing · blindness and low vision · image accessibility · computer vision

• LVRS: the low vision research system

  M. Krell · 1994 · Proceedings of the First Annual ACM Conference on Assistive Technologies (Assets '94)

  This 1994 paper introduces the Low Vision Research System (LVRS), a computer-based research tool designed for vision researchers developing vision enhancement systems for people with low vision. The system comprises three integrated components: warping software that can…

  low vision · vision enhancement · image processing · image warping · digital video

17 results.