i'sFree: Eyes-Free Gesture Typing via a Touch-Enabled Remote Control
i'sFree: Eyes-Free Gesture Typing via a Touch-Enabled Remote Control
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DOI：
10.1145/3290605.3300678
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发表时间：
2019-05
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影响因子：
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通讯作者：
Suwen Zhu;Jingjie Zheng;Shumin Zhai;Xiaojun Bi
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作者：
Suwen Zhu;Jingjie Zheng;Shumin Zhai;Xiaojun Bi
输入文本而无需关注键盘是引人注目的，但由于缺乏视觉指导而具有挑战性。我们建议i'sFree能够在远程显示器上从支持触摸的遥控器进行无眼手势输入。i'sFree不显示键盘或手势轨迹，但根据不可见和移动的QWERTY布局将遥控器上绘制的手势解码为文本。i'sFree解码手势类似于一般的手势打字解码器，但从瞬时和历史输入手势中学习，以动态调整键盘位置。我们设计它是基于对用户如何执行无眼手势打字的理解。我们的评估表明，眼睛自由手势打字是可行的：减少在远处显示器上的视觉指导几乎不影响打字速度。结果还表明，i'sFree手势解码算法是有效的，能够实现23 WPM的输入速度，比基于一般手势解码器的基线无眼条件快46%。最后，i'sFree很容易学习：参与者在前10分钟达到了22 WPM，尽管其中40%是第一次使用手势输入用户。
Entering text without having to pay attention to the keyboard is compelling but challenging due to the lack of visual guidance. We propose i'sFree to enable eyes-free gesture typing on a distant display from a touch-enabled remote control. i'sFree does not display the keyboard or gesture trace but decodes gestures drawn on the remote control into text according to an invisible and shifting Qwerty layout. i'sFree decodes gestures similar to a general gesture typing decoder, but learns from the instantaneous and historical input gestures to dynamically adjust the keyboard location. We designed it based on the understanding of how users perform eyes-free gesture typing. Our evaluation shows eyes-free gesture typing is feasible: reducing visual guidance on the distant display hardly affects the typing speed. Results also show that the i'sFree gesture decoding algorithm is effective, enabling an input speed of 23 WPM, 46% faster than the baseline eyes-free condition built on a general gesture decoder. Finally, i'sFree is easy to learn: participants reached 22 WPM in the first ten minutes, even though 40% of them were first-time gesture typing users.