Article2018

Screen navigation system for visually impaired people

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Digital Accessibility for Disabilities Assistive Technology in Communication and Mobility Tactile and Sensory Interactions

Abstract

Purpose The SETUP09 system consists of both navigation and a computer-aided drawing technique for people who are blind and visually impaired (BVI). The purpose of this paper is to address the need for a screen navigation technique, which can facilitate a user’s ability to produce art, and scientific diagrams electronically, by introducing a compass-based screen navigation method. Design/methodology/approach BVI computer users were tested using different screen navigation tasks to assess the accuracy and efficiency of this compass-based navigation technique by using a prototype (SETUP09) and tactile paper grid maps. Findings The results confirmed that the compass-based navigation facilitates higher accuracy in screen-based moving and location recognition with a noticeable reduction in time and effort. Research limitations/implications Improvements such as the addition of a sound layer to the interface, use of hotkeys, braille and user speech inputs are yet to be tested. Social implications The current lack of suitable and efficient screen navigation technology is a limiting factor for BVI students and computer users in producing diagrams and drawings. This may place limitations on their career progression and life contentment. It is challenging for a BVI person to draw diagrams and art, which are commonly taught in education or used in industry. The compass-based screen navigation system was developed to address BVI users’ need to be able to create such content. Originality/value A compass-based navigation method enables screen navigation through a formal command language and enables intuitive movement to a screen location using matrix-style compass directions with zoom-in and zoom-out capabilities.

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References

1998Using speech and touch to enable blind people to access schematic diagrams 2002TeDUB: A System for Presenting and Exploring Technical Drawings for Blind People 2007Teaching data structures to students who are blind 2010Investigating Grid-Based Navigation

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2020An empirical evaluation of a graphics creation technique for blind and visually impaired individuals

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