Changes

AR Markers are square fiducial markers composed by a wide black border and a inner binary matrix which determines its identifier (ID). These markers are detected in the camera stream of the [[POI_View|POI View ]] and can be used for [[AR-Marker#Direct_Augmentation|Direct Augmentation ]] or [[AR-Marker#AR-Marker Device Pose Estimation|Device Pose calculation]].The AR-Marker ID is defined as an integer value between zero and the maximum dictionary size (see [[AR-Marker#Marker Creation|Marker Creation]]). Once a marker is detected, the ID is used to gather additional information from the associated UBIK® object (see Classifica[[AR-tionsMarker#Classifications|Classifications]]). The four corner points of an AR-Marker are extracted to calculate the relative pose (position and orientation) between the camera and the AR-Marker, which serves as a basement for the above stated use-cases. For that camera of the mobile device has to be calibrated (see Camera Calibration) and the AR-Marker side length (see Classifications) has to be known.

Note when printing AR-Markers the physical side length has to correlate with the AR-Marker side length property (see Classification[[AR-Marker#Classifications|Classifications]]).

The most important classification is the SYSCLS_ARMARKER, containting the identi-fier and the AR-Marker side length. Two additional classifications SYSCLS_ARMARKER_DIRECTAR and SYSCLS_ARMARKER_GEO inherit from the above classiciation and are used to distinguish between the two use-cases of [[AR-Marker#Direct_Augmentation|Direct Augmentation ]] and [[AR-Marker#AR-Marker Device Pose Estimation|Device Pose calculation]].