Twitter A11y: A Browser Extension to Describe Images
The 21st International ACM SIGACCESS Conference on Computers and Accessibility(2019)
摘要
Twitter is integral to many people's lives for news, entertainment, and communication. While people increasingly post images to Twitter, a large majority of images remain inaccessible to people with vision impairments due to a lack of image descriptions (i.e. alternative text). We present Twitter A11y (pronounced ally), a browser extension to make images accessible through a set of strategies tailored to the platform. For example, screenshots of text that exceed the Twitter character limit are common, so we detect textual images, and automatically add alternative text using optical character recognition. Tweet images apart from screenshots and link previews receive descriptions from crowd workers. Based on an evaluation of the timelines of 50 self-identified blind Twitter users, Twitter A11y increases automatic alt text coverage from 2.6% to 25.6%, before crowdsourcing the remaining images.
更多查看译文
关键词
accessibility, screen reader, social media, twitter
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络