AutoVizuA11y: A Tool to Automate Screen Reader Accessibility in Charts

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dc.contributor.authorDuarte, Diogoen_US
dc.contributor.authorCosta, Ritaen_US
dc.contributor.authorBizarro, Pedroen_US
dc.contributor.authorDuarte, Carlosen_US
dc.contributor.editorAigner, Wolfgangen_US
dc.contributor.editorArchambault, Danielen_US
dc.contributor.editorBujack, Roxanaen_US
dc.date.accessioned2024-05-21T08:19:01Z
dc.date.available2024-05-21T08:19:01Z
dc.date.issued2024
dc.description.abstractCharts remain widely inaccessible on the web for users of assistive technologies like screen readers. This is, in part, due to data visualization experts still lacking the experience, knowledge, and time to consistently implement accessible charts. As a result, screen reader users are prevented from accessing information and are forced to resort to tabular alternatives (if available), limiting the insights that they can gather. We worked with both groups to develop AutoVizuA11y, a tool that automates the addition of accessible features to web-based charts. It generates human-like descriptions of the data using a large language model, calculates statistical insights from the data, and provides keyboard navigation between multiple charts and underlying elements. Fifteen screen reader users interacted with charts made accessible with AutoVizuA11y in a usability test, thirteen of which praised the tool for its intuitive design, short learning curve, and rich information. On average, they took 66 seconds to complete each of the eight analytical tasks presented and achieved a success rate of 89%. Through a SUS questionnaire, the participants gave AutoVizuA11y an ''Excellent'' score-83.5/100 points. We also gathered feedback from two data visualization experts who used the tool. They praised the tool availability, ease of use and functionalities, and provided feedback to add AutoVizuA11y support for other technologies in the future.en_US
dc.description.number3
dc.description.sectionheadersText and Speech
dc.description.seriesinformationComputer Graphics Forum
dc.description.volume43
dc.identifier.doi10.1111/cgf.15099
dc.identifier.issn1467-8659
dc.identifier.pages12 pages
dc.identifier.urihttps://doi.org/10.1111/cgf.15099
dc.identifier.urihttps://diglib.eg.org/handle/10.1111/cgf15099
dc.publisherThe Eurographics Association and John Wiley & Sons Ltd.en_US
dc.rightsAttribution 4.0 International License
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectCCS Concepts: Human-centered computing→Visualization; Accessibility
dc.subjectHuman centered computing→Visualization
dc.subjectAccessibility
dc.titleAutoVizuA11y: A Tool to Automate Screen Reader Accessibility in Chartsen_US
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