As discussed on element.io the OpenCV FiducialDetector does not work in real world conditions. Neither VideoIn nor a taken video or pictire snapshots.
No marker is detected. It is actually the same marker as in the help patch which works perfect if it’s just the plain image of the marker.
Test Patch, Image and Testvideo here:
Fiducial markers_REAL_WORLD_TEST.zip (1.5 MB)
from the webcam via ImageReader.