ARTag configuration file

Apr 28, 2009 at 10:02 PM
Is there a documentation of the ARTag configuration file? My main doubt about it is the min_points attribute, which I don't understand.
Apr 29, 2009 at 5:40 PM
Unfortunately, I don't know of a documentation for the ARTag configuration file. From I what I figured out, it seems like min_points defines the minumum number of corner points it need to see. If a single marker is shown fully in the video image, then 4 corner points are shown. I remember that if you set min_points to 4, and if less than 4 corner points are shown (especially with multiple marker array configuration), then it won't return as marker found. I think this parameter is to control the reliability. If you set it to higher numbers (I guess it should be always less than 4 * (num_marker)), then it will only give you back transformation when many markers are in the view to avoid crappy tracking when only a few is visible.