Function (biology)

Biology

Augmented reality

Tracking (education)

Pedagogy

Set (abstract data type)

Computer science

Eye tracking

Tracking system

Evolutionary biology

Psychology

Artificial intelligence

Kalman filter

Programming language

Fiducial marker

Computer vision

Optical tracking with fiducial markers is commonly used in augmented reality (AR) systems - AR systems that rely on the ARToolKit (Kato and Billinghurst, 1999) are prominent examples. The information obtained by the tracking subsystem are widely used in AR, e.g. in order to calculate how virtual objects should be located and oriented. The results of extensive accuracy experiments with single markers are reported and made operational by the definition of an accuracy function. The results show a specific distribution of tracking accuracy dependent on distance as well as angle between camera and marker. This insight is applicable for designing the set-up of AR applications in general that rely on optical tracking.

Accuracy in Optical Tracking with Fiducial Markers: An Accuracy Function for ARToolKit