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Conference papers

Extending the Vocabulary of Touch Events with ThumbRock

David Bonnet 1 Caroline Appert 1, 2 Michel Beaudouin-Lafon 1, 2
1 IN-SITU - Situated interaction
LRI - Laboratoire de Recherche en Informatique, UP11 - Université Paris-Sud - Paris 11, Inria Saclay - Ile de France, CNRS - Centre National de la Recherche Scientifique : UMR8623
Abstract : Compared with mouse-based interaction on a desktop interface, touch-based interaction on a mobile device is quite limited: most applications only support tapping and dragging to perform simple gestures. Finger rolling provides an alternative to tapping but uses a recognition process that relies on either per-user calibration, ex- plicit delimiters or extra hardware, making it difficult to integrate into current touch-based mobile devices. This paper introduces ThumbRock, a ready-to-use micro gesture that consists in rolling the thumb back and forth on the touchscreen. Our algorithm rec- ognizes ThumbRocks with more than 96% accuracy without cali- bration nor explicit delimiter by analyzing the data provided by the touch screen with a low computational cost. The full trace of the gesture is analyzed incrementally to ensure compatibility with other events and to support real-time feedback. This also makes it possible to create a continuous control space as we illustrate with our MicroSlider, a 1D slider manipulated with thumb rolling gestures.
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Submitted on : Friday, June 28, 2013 - 7:36:21 AM
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David Bonnet, Caroline Appert, Michel Beaudouin-Lafon. Extending the Vocabulary of Touch Events with ThumbRock. Proceedings of Graphics Interface 2013, May 2013, Regina (Saskatchewan), Canada. ⟨hal-00839414⟩

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