Enabling Convenient Online Collaborative Writing for Low Vision Screen Magnifier Users
Enabling Convenient Online Collaborative Writing for Low Vision Screen Magnifier Users
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DOI：
10.1145/3511095.3531274
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发表时间：
2022-06
期刊：
影响因子：
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通讯作者：
H. Lee;Y. Prakash;Mohan Sunkara;I. Ramakrishnan;V. Ashok
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文献类型：
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作者：
H. Lee;Y. Prakash;Mohan Sunkara;I. Ramakrishnan;V. Ashok
在线协作编辑在专业和学术环境中变得越来越普遍。然而，人们对这些编辑器对于低视力屏幕放大镜用户的可用性知之甚少，因为现有的研究工作主要集中在盲人屏幕阅读器用户。一项采访研究表明，对于屏幕放大镜用户来说，即使是进行基本的协作写作活动（例如处理协作者的评论和审查文档更改）也是艰巨且令人沮丧的。这些问题背后的具体交互挑战包括过度平移、内容遮挡、大面积空白区域以及频繁的上下文丢失。为了应对这些挑战，我们开发了 MagDocs，这是一个浏览器扩展程序，可帮助屏幕放大镜用户在 Google Docs Web 应用程序上方便地执行协作写作活动。 MagDocs 植根于两个想法：(i) 自定义支持界面，用户可以根据需要立即访问并与当前放大镜视口内的协作界面元素（例如评论或协作者编辑）进行交互； (ii) 视觉关系保留，其中协作元素和文档中的相应文本在放大镜视口内彼此靠近地显示，以最大限度地减少上下文丢失和平移工作。一项针对 15 名低视力用户的研究表明，MagDocs 显着提高了整体用户满意度和交互体验，同时还大大减少了执行典型协作写作任务的时间和精力。
Online collaborative editors have become increasingly prevalent in both professional and academic settings. However, little is known about how usable these editors are for low vision screen magnifier users, as existing research works have predominantly focused on blind screen reader users. An interview study revealed that it is arduous and frustrating for screen magnifier users to perform even the basic collaborative writing activities, such as addressing collaborators’ comments and reviewing document changes. Specific interaction challenges underlying these issues included excessive panning, content occlusion, large empty space patches, and frequent loss of context. To address these challenges, we developed MagDocs, a browser extension that assists screen magnifier users in conveniently performing collaborative writing activities on the Google Docs web application. MagDocs is rooted in two ideas: (i) a custom support interface that users can instantly access on demand and interact with collaborative interface elements, such as comments or collaborator edits, within the current magnifier viewport; and (ii) visual relationship preservation, where collaborative elements and the corresponding text in the document are shown close to each other within the magnifier viewport to minimize context loss and panning effort. A study with 15 low vision users showed that MagDocs significantly improved the overall user satisfaction and interaction experience, while also substantially reduced the time and effort to perform typical collaborative writing tasks.