TableView: Enabling Efficient Access to Web Data Records for Screen-Magnifier Users
TableView: Enabling Efficient Access to Web Data Records for Screen-Magnifier Users
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DOI：
10.1145/3373625.3417030
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发表时间：
2020-10
期刊：
影响因子：
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通讯作者：
H. Lee;S. Uddin;V. Ashok
中科院分区：
文献类型：
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作者：
H. Lee;S. Uddin;V. Ashok
有视觉障碍的人通常依靠屏幕放大辅助技术与网页进行交互。由于屏幕放大镜用户在任何时候只能以放大的形式查看部分网页内容，因此为了比较数据记录，他们不得不忍受在网页的不同部分反复移动放大镜焦点的不方便和费力的过程，例如，根据价格，持续时间等比较旅游网站上的可用航班。为了解决这个问题，我们设计并开发了TableView，这是一个浏览器扩展，它利用最先进的信息提取方法来自动识别和提取网页中的数据记录及其属性，并随后以紧凑排列的表格格式将它们呈现给用户，与目前页面中这些项目占用的屏幕空间相比，需要的屏幕空间要少得多。这样，TableView就能够在放大镜焦点中打包更多的项目，从而减少了整个内容区域的平移，从而使屏幕放大镜用户在做出选择之前更容易比较不同的项目。一项针对16名弱视参与者的用户研究表明，使用TableView，与使用屏幕放大镜相比，在网页中平移数据记录所花费的时间显著减少了72.9%（平均），与使用空间压缩方法的屏幕放大镜相比，减少了66.5%。
People with visual impairments typically rely on screen-magnifier assistive technology to interact with webpages. As screen-magnifier users can only view a portion of the webpage content in an enlarged form at any given time, they have to endure an inconvenient and arduous process of repeatedly moving the magnifier focus back-and-forth over different portions of the webpage in order to make comparisons between data records, e.g., comparing the available flights in a travel website based on their prices, durations, etc. To address this issue, we designed and developed TableView, a browser extension that leverages a state-of-the art information extraction method to automatically identify and extract data records and their attributes in a webpage, and subsequently presents them to a user in a compactly arranged tabular format that needs significantly less screen space compared to that currently occupied by these items in the page. This way, TableView is able to pack more items within the magnifier focus, thereby reducing the overall content area for panning, and hence making it easy for screen-magnifier users to compare different items before making their selections. A user study with 16 low vision participants showed that with TableView, the time spent on panning the data records in webpages was significantly reduced by 72.9% (avg.) compared to that with just a screen magnifier, and 66.5% compared to that with a screen magnifier using a space compaction method.