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Simon Rogers

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Publications by Simon Rogers (bibliography)

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2012
 
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Weir, Daryl, Rogers, Simon, Murray-Smith, Roderick and Lochtefeld, Markus (2012): A user-specific machine learning approach for improving touch accuracy on mobile devices. In: Proceedings of the 2012 ACM Symposium on User Interface Software and Technology 2012. pp. 465-476.

We present a flexible Machine Learning approach for learning user-specific touch input models to increase touch accuracy on mobile devices. The model is based on flexible, non-parametric Gaussian Process regression and is learned using recorded touch inputs. We demonstrate that significant touch accuracy improvements can be obtained when either raw sensor data is used as an input or when the device's reported touch location is used as an input, with the latter marginally outperforming the former. We show that learned offset functions are highly nonlinear and user-specific and that user-specific models outperform models trained on data pooled from several users. Crucially, significant performance improvements can be obtained with a small (≈200) number of training examples, easily obtained for a particular user through a calibration game or from keyboard entry data.

© All rights reserved Weir et al. and/or ACM Press

2011
 
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Rogers, Simon, Williamson, John, Stewart, Craig and Murray-Smith, Roderick (2011): AnglePose: robust, precise capacitive touch tracking via 3d orientation estimation. In: Proceedings of ACM CHI 2011 Conference on Human Factors in Computing Systems 2011. pp. 2575-2584.

We present a finger-tracking system for touch-based interaction which can track 3D finger angle in addition to position, using low-resolution conventional capacitive sensors, therefore compensating for the inaccuracy due to pose variation in conventional touch systems. Probabilistic inference about the pose of the finger is carried out in real-time using a particle filter; this results in an efficient and robust pose estimator which also gives appropriate uncertainty estimates. We show empirically that tracking the full pose of the finger results in greater accuracy in pointing tasks with small targets than competitive techniques. Our model can detect and cope with different finger sizes and the use of either fingers or thumbs, bringing a significant potential for improvement in one-handed interaction with touch devices. In addition to the gain in accuracy we also give examples of how this technique could open up the space of novel interactions.

© All rights reserved Rogers et al. and/or their publisher

2010
 
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Rogers, Simon, Williamson, John, Stewart, Craig and Murray-Smith, Roderick (2010): FingerCloud: uncertainty and autonomy handover incapacitive sensing. In: Proceedings of ACM CHI 2010 Conference on Human Factors in Computing Systems 2010. pp. 577-580.

We describe a particle filtering approach to inferring finger movements on capacitive sensing arrays. This technique allows the efficient combination of human movement models with accurate sensing models, and gives high-fidelity results with low-resolution sensor grids and tracks finger height. Our model provides uncertainty estimates, which can be linked to the interaction to provide appropriately smoothed responses as sensing performance degrades; system autonomy is increased as estimates of user behaviour become less certain. We demonstrate the particle filter approach with a map browser running with a very small sensor board, where finger position uncertainty is linked to autonomy handover.

© All rights reserved Rogers et al. and/or their publisher

 
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Changes to this page (author)

23 Nov 2012: Modified
05 Jul 2011: Modified
02 Nov 2010: Added

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URL: http://www.interaction-design.org/references/authors/simon_rogers.html

Upcoming Courses

go to course
User-Centred Design - Module 3
72% booked. Starts in 23 days
 
 

Featured chapter

Marc Hassenzahl explains the fascinating concept of User Experience and Experience Design. Commentaries by Don Norman, Eric Reiss, Mark Blythe, and Whitney Hess

User Experience and Experience Design !

 
 

Our Latest Books

 
 
The Social Design of Technical Systems: Building technologies for communities. 2nd Edition
by Brian Whitworth and Adnan Ahmad
start reading
 
 
 
 
Gamification at Work: Designing Engaging Business Software
by Janaki Mythily Kumar and Mario Herger
start reading
 
 
 
 
The Social Design of Technical Systems: Building technologies for communities
by Brian Whitworth and Adnan Ahmad
start reading
 
 
 
 
The Encyclopedia of Human-Computer Interaction, 2nd Ed.
by Mads Soegaard and Rikke Friis Dam
start reading