Accuracy in fingertip tracking using Leap Motion Controller for interactive virtual applications

The paper deals with an experimental assessment of the Leap Motion Controller®. This device is able to track the user’s hands in a real environment. Due to lowinvasiveness and easiness of use, it is promising for the integration in virtual or augmented reality, research and entertainment scenarios. The assessment is performed in a real context using volunteers that were asked to point with the fingertips to a set of predefined locations in space. A specific test rig has been designed and built. It is comprised of a transparent plate supported by adjustable pillars and mounted over the Leap. The data are processed to assess the errors in tracking the five fingertips of the right hand. Results show that the accuracy and precision of the Leap is suitable for robust tracking of the user’s hand. The results also unveil that there are preferable zones in which the tracking performance is better.