Understanding and Improving Information Extraction From Online Geospatial Data Visualizations for Screen-Reader Users

Proceedings of the 24th International ACM SIGACCESS Conference on Computers and Accessibility Pub Date : 2022-10-22 DOI:10.1145/3517428.3550363

Ather Sharif, Andrew M. Zhang, Anna Shih, J. Wobbrock, Katharina Reinecke

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引用次数: 9

Abstract

Prior work has studied the interaction experiences of screen-reader users with simple online data visualizations (e.g., bar charts, line graphs, scatter plots), highlighting the disenfranchisement of screen-reader users in accessing information from these visualizations. However, the interactions of screen-reader users with online geospatial data visualizations, commonly used by visualization creators to represent geospatial data (e.g., COVID-19 cases per US state), remain unexplored. In this work, we study the interactions of and information extraction by screen-reader users from online geospatial data visualizations. Specifically, we conducted a user study with 12 screen-reader users to understand the information they seek from online geospatial data visualizations and the questions they ask to extract that information. We utilized our findings to generate a taxonomy of information sought from our participants’ interactions. Additionally, we extended the functionalities of VoxLens—an open-source multi-modal solution that improves data visualization accessibility—to enable screen-reader users to extract information from online geospatial data visualizations.

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理解和改进面向屏幕阅读器用户的在线地理空间数据可视化信息提取

先前的工作研究了屏幕阅读器用户与简单的在线数据可视化(例如，条形图，线形图，散点图)的交互体验，强调了屏幕阅读器用户在从这些可视化中获取信息时的剥夺权利。然而，屏幕阅读器用户与在线地理空间数据可视化(可视化创建者通常使用在线地理空间数据可视化来表示地理空间数据(例如，美国每个州的COVID-19病例)的交互仍未得到探索。在这项工作中，我们研究了屏幕阅读器用户从在线地理空间数据可视化中的交互和信息提取。具体来说，我们对12名屏幕阅读器用户进行了一项用户研究，以了解他们从在线地理空间数据可视化中寻求的信息，以及他们为提取这些信息而提出的问题。我们利用我们的发现来生成从参与者的互动中寻求的信息分类。此外，我们扩展了voxlens的功能，这是一个开源的多模式解决方案，可以提高数据可视化的可访问性，使屏幕阅读器用户能够从在线地理空间数据可视化中提取信息。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings of the 24th International ACM SIGACCESS Conference on Computers and Accessibility

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