Hi, I am just trying my first little projects in RC and just wonder what the current state is if of the marker tracking topic.
I read here about AprilTags and ChiliTags, but is there a functionality to recognize them in RC or should I use an external program (and if yes, which would you recommend)?
Thanks in advance for your help…
Kai
there is an example somewhere for the cil version that has done this with opencv.
I think this was feature that was going to be bought into rc directly. but i haven’t heard anything about that for a while.
…did it myslef in the meantime with OpenCV and some Python code… 
Hmm, pretty sure I answered this post… anyway…
Well done! 
Does this require the CLI version or is it an external little tool? And which Tags are you using?
I am very interested! Any chance you would be willing to share it?
Your distortion grid looks a bit worrying though…
…its an external tool (using ArUco markers which are very well supported in OpenCV) producing a control point *.csv.
Using four CP’s per marker was not very stable distortion-wise, I now compute the centre point of every quadrilateral and things are looking much better:
Nice!
So you input the images and you get a point list which you then import into RC?
…exactly. In addition the tool produces a marked version of each image with a distinctive filename to check if the markers are found correctly: