Calibrating trackers - ju1ce/April-Tag-VR-FullBody-Tracker GitHub Wiki

Before starting, make sure that your number of markers is set correctly, that ignore tracker 0 is checked if you dont use the hip tracker, and that the size of markers parameter is set correctly (measure the inner white square).

This will start tracker calibration. Camera should be running and calibrated. Before starting, put on your trackers in the same way you will use them in game. You must only do this step on first launch and whenever you change the trackers.

Capture the trackers with the camera by moving a tracker closer than 30cm to the camera. To add a marker to the tracker, film it while another already added marker is seen. A green marker means its already added, yellow means it is being added, and red means it cannot add it because no already added marker is seen. Purple means the tracker is too far away from the camera. Repeat this process until all markers on the trackers are green, then click ok.

If some of the markers only have a thin blue outline, it means the markers are detected, but do not belong to any of the used trackers. You have probably set a too low number of trackers in the parameters.

If markers are not detected at all, make sure your camera is not mirrored.

Example of tracker calibration. Rotate the trackers around a bit. The axis should follow nicely no matter the number of markers that are detected for the tracker.