title: An analysis of the precision and reliability of the leap motion sensor and its suitability for static and dynamic tracking.
abstract: We present the results of an evaluation of the performance of the Leap Motion Controller with the aid of a professional, high-precision, fast motion tracking system. A set of static and dynamic measurements was performed with different numbers of tracking objects and configurations. For the static measurements, a plastic arm model simulating a human arm was used. A set of 37 reference locations was selected to cover the controller's sensory space. For the dynamic measurements, a special V-shaped tool, consisting of two tracking objects maintaining a constant distance between them, was created to simulate two human fingers. In the static scenario, the standard deviation was less than 0.5 mm. The linear correlation revealed a significant increase in the standard deviation when moving away from the controller. The results of the dynamic scenario revealed the inconsistent performance of the controller, with a significant drop in accuracy for samples taken more than 250 mm above the controller's surface. The Leap Motion Controller undoubtedly represents a revolutionary input device for gesture-based human-computer interaction; however, due to its rather limited sensory space and inconsistent sampling frequency, in its current configuration it cannot currently be used as a professional tracking system.
authors.affiliation: Faculty of Electrical Engineering, University of Ljubljana, Tržaška 25, Ljubljana 1000, Slovenia. joze.guna@fe.uni-lj.si.
authors.forename: Jože
authors.initials: J
authors.lastname: Guna
authors.affiliation: Faculty of Electrical Engineering, University of Ljubljana, Tržaška 25, Ljubljana 1000, Slovenia. grega.jakus@fe.uni-lj.si.
authors.forename: Grega
authors.initials: G
authors.lastname: Jakus
authors.affiliation: Faculty of Electrical Engineering, University of Ljubljana, Tržaška 25, Ljubljana 1000, Slovenia. matevz.pogacnik@fe.uni-lj.si.
authors.forename: Matevž
authors.initials: M
authors.lastname: Pogačnik
authors.affiliation: Faculty of Electrical Engineering, University of Ljubljana, Tržaška 25, Ljubljana 1000, Slovenia. saso.tomazic@fe.uni-lj.si.
authors.forename: Sašo
authors.initials: S
authors.lastname: Tomažič
authors.affiliation: Faculty of Electrical Engineering, University of Ljubljana, Tržaška 25, Ljubljana 1000, Slovenia. jaka.sodnik@fe.uni-lj.si.
authors.forename: Jaka
authors.initials: J
authors.lastname: Sodnik