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Brendan McCane, Department of Computer Science


Touch Tracking with a Particle Filter


Owheo 106 - 1:00 pm, Friday 2nd August


In this talk I will discuss the problems of multi-touch touchscreen tracking and focus on one particular system that uses linescan cameras and retro-reflective strips. Such a system is very good for single-touch tracking, but complexities arise when multi-touch tracking is needed. I show that a particle filter incorporating local search provides an accurate and efficient solution. The system achieves over 95% correct tracking with an error tolerance of 1mm for up to 8 touches. I will also briefly discuss some of the limitations of particle filters in practice.

Last modified: Monday, 29-Jul-2013 10:52:51 NZST

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