LensGesture: Augmenting Mobile Interactions with Back-of-Device Finger Gestures

被引:24
|
作者
Xiao, Xiang [1 ]
Han, Teng [2 ]
Wang, Jingtao [1 ]
机构
[1] Univ Pittsburgh, Dept Comp Sci, 210 S Bouquet St, Pittsburgh, PA 15260 USA
[2] Univ Pittsburgh, Intelligent Syst Program, Pittsburgh, PA 15260 USA
关键词
Mobile Interfaces; Gestures; Motion Sensing; Camera Phones; LensGesture; Text Input;
D O I
10.1145/2522848.2522850
中图分类号
TP301 [理论、方法];
学科分类号
081202 ;
摘要
We present LensGesture, a pure software approach for augmenting mobile interactions with back-of-device finger gestures. LensGesture detects full and partial occlusion as well as the dynamic swiping of fingers on the camera lens by analyzing image sequences captured by the built-in camera in real time. We report the feasibility and implementation of LensGesture as well as newly supported interactions. Through offline benchmarking and a 16-subject user study, we found that 1) LensGesture is easy to learn, intuitive to use, and can serve as an effective supplemental input channel for today's smartphones; 2) LensGesture can be detected reliably in real time; 3) LensGesture based target acquisition conforms to Fitts' Law and the information transmission rate is 0.53 bits/sec; and 4) LensGesture applications can improve the usability and the performance of existing mobile interfaces.
引用
收藏
页码:287 / 294
页数:8
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