uWave: Accelerometer-based personalized gesture recognition and its applications |
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Authors: | Jiayang Liu Lin Zhong Jehan Wickramasuriya Venu Vasudevan |
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Affiliation: | 1. Department of Electrical Computer Engineering, Rice University, Houston, TX 77005, United States;2. Pervasive Platforms & Architectures Lab, Applications & Software Research Center, Motorola Labs, United States |
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Abstract: | The proliferation of accelerometers on consumer electronics has brought an opportunity for interaction based on gestures. We present uWave, an efficient recognition algorithm for such interaction using a single three-axis accelerometer. uWave requires a single training sample for each gesture pattern and allows users to employ personalized gestures. We evaluate uWave using a large gesture library with over 4000 samples for eight gesture patterns collected from eight users over one month. uWave achieves 98.6% accuracy, competitive with statistical methods that require significantly more training samples. We also present applications of uWave in gesture-based user authentication and interaction with 3D mobile user interfaces. In particular, we report a series of user studies that evaluates the feasibility and usability of lightweight user authentication. Our evaluation shows both the strength and limitations of gesture-based user authentication. |
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