About
30
Publications
5,651
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
550
Citations
Citations since 2017
Introduction
Publications
Publications (30)
Data visualisations are increasingly used online to engage readers and enable independent analysis of the data underlying news stories. However, access to such infographics is problematic for readers who are blind or have low vision (BLV). Equitable access to information is a basic human right and essential for independence and inclusion. We introd...
Eyes-free operation of mobile devices is critical in situations where the visual channel is either unavailable or attention is needed elsewhere. In such situations, vibrotactile tracing along paths or lines can help users to navigate and identify symbols and shapes without visual information. In this paper, we investigated the applicability of diff...
Accessibility in sports media broadcast (SMB) remains a problem for blind spectators who wish to socialize and watch sports with friends and family. Although popular, radio’s reliance on low bandwidth speech results in an overwhelming experience for blind spectators. In this paper we focused on two core issues: (i) how SMB can be augmented to conve...
This paper presents a systematic literature review of 292 publications from 97 unique venues on touch-based graphics for people who are blind or have low vision, from 2010 to mid-2020. It is the first review of its kind on touch-based accessible graphics. It is timely because it allows us to assess the impact of new technologies such as commodity 3...
We present a generic model for providing blind and severely vision-impaired readers with access to online information graphics. The model supports fully and semi-automatic transcription and allows the reader a choice of presentation mediums. We evaluate the model through a case study: online house floor plans. To do so, we conducted a formative use...
Sports tracking data are the high-resolution spatiotemporal observations of a competitive event. The growing collection of these data in professional sport allows us to address a fundamental problem of modern sport: how to attribute value to individual actions? Taking advantage of the smoothness of ball and player movement in tennis, we present a f...
Visualisations are commonly used to understand social, biological and other kinds of networks. Currently we do not know how to effectively present network data to people who are blind or have low-vision (BLV). We ran a controlled study with 8 BLV participants comparing four tactile representations: organic node-link diagram, grid node-link diagram,...
Visualisations are commonly used to understand social, biological and other kinds of networks. Currently, we do not know how to effectively present network data to people who are blind or have low-vision (BLV). We ran a controlled study with 8 BLV participants comparing four tactile representations: organic node-link diagram, grid node-link diagram...
Access to information is a fundamental problem for people with vision impairment (PVI). Textual information are considerably more accessible with the use of screen readers that work on desktop and mobile devices. However, access to graphical information is still a challenging problem. There are different technologies to present graphics to PVI, but...
The emerging field of Immersive Analytics investigates how novel display and interaction technologies can enable people to better explore and analyse data and complex information. Collaboration is a crucial aspect of Immersive Analytics. In this paper we present ContextuWall, a system for interactive local and remote collaboration using touch and m...
Information graphics such as plots, maps, plans, charts, tables and diagrams form an integral part of the student learning experience in many disciplines. However, for a vision impaired student accessing such graphical materials can be problematic. This research seeks to understand the current state of accessible graphics provision in Australian hi...
We present a new approach for providing mathematical and statistical graphics to people who are blind or have severe vision impairment and describe the implementation and initial evaluation of an accessible graphing calculator, GraCALC. GraCALC automatically creates a graphic from a specification of the function or a tabular data using a web based...
Immersive Analytics is an emerging research thrust investigating how new interaction and display technologies can be used to support analytical reasoning and decision making. The aim is to provide multi-sensory interfaces that support collaboration and allow users to immerse themselves in their data in a way that supports real-world analytics tasks...
We present a new model for presenting graphics in eBooks to blind readers. It is based on the GraViewer app which allows an accessible graphic embedded in an iBook to be explored on an iPad using speech and non-speech audio feedback. We also introduce a web-based tool, GraAuthor, for creating such accessible graphics and describe the workflow for i...
Better access to on-line information graphics is a pressing need for people who are blind or have severe vision impairment. We present a new model for accessible presentation of on-line information graphics and demonstrate its use for presenting floor plans. While floor plans are increasingly provided on-line, people who are blind are at best provi...
Information graphics are common in written communication. The ability to comprehend, use and create these graphics is an important skill that most of us take for granted. However, for those who are visually impaired, access to such graphics is severely limited. While new presentation technologies will improve access, an unsolved problem is how to a...
We investigate the cognitive impact of various layout features-symmetry, alignment, collinearity, axis alignment and orthogonality - on the recall of network diagrams (graphs). This provides insight into how people internalize these diagrams and what features should or shouldn't be utilised when designing static and interactive network-based visual...
Graphics are widely used in newspapers, text books, web pages, metro maps, instruction manuals etc. When appropriate they can provide significant cognitive benefits over text. Their use is set to increase as interactive information visualisation applications become more mainstream.
We report a usability study which investigated the use of haptic versus non-speech audio interface to identify different geometric shapes. The study used simple graphics containing one to three geometric shapes (line, triangle, rectangle and circle). We presented the graphics to 11 participants in two different modes, audio and haptic, in a counter...
Access to graphics and other two dimensional information is still severely limited for people who are blind. We present a new multimodal computer tool, GraVVITAS, for presenting accessible graphics. It uses a multi-touch display for tracking the position of the user’s fingers augmented with haptic feedback for the fingers provided by small vibratin...
The properties that make diagrams more effective than text in certain circumstances have been investigated by researchers
for over 20 years. However, this research has focused on visual diagrams. To the best of our knowledge, no research has yet
investigated whether the same benefits and properties hold for tactile diagrams, which are blind people’...
Bar charts are one of the most commonly used diagram types. Tactile diagrams are a widely used technique for presenting graphics to people who are blind. We explored how to present bar charts
using a tactile presentation. Our user study used blind participants and evaluated both user preferences and performance.
We found that providing grid lines a...
![Figure 3a: Sign [1]LSF isolated](profile/Cagatay-Goncu/publication/242789049/figure/fig2/AS:297682519248906@1447984452001/a-Sign-1LSF-isolated_Q320.jpg)
Diagrams are important components of educational materials. They can be found in various media. Printed media, such as text books, have traditionally been the most commonly used media for educational material, however online electronic resources, such as web pages and e-books, are becoming increasingly popular sources of educational content. Online...
We have implemented a Java application that automatically generates tactile bar and pie charts from data values given in a formatted text file. The tool is designed to semi-automate the construction of tactile versions of bar and pie charts in educational material. The tool provides a wide variety of layout styles. While the tool allows the user to...
Projects
Project (1)
GraVVITAS makes graphics accessible to people with vision impairment in an affordable and practical way by using off-the-shelf technologies. It displays the graphics on the multi-touch screen, and provides audio feedback when the users touch the shapes on the screen. The audio feedback is given in the form of speech to describe shapes, and in the form of non-speech audio to give audio clues to locate shapes on the screen quickly. GraVVITAS also augments the interaction by using haptic feedback which is given in the form of vibration to the fingers through a wearable device. The haptic feedback is given at varying intensity levels for different shapes and shapes borders to improve the understanding of shape boundaries.
https://www.monash.edu/it/our-research/showcase-projects/gravvitas-helping-blind-people-access-graphics
