Current state of marker tracking in RC

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glaesner

• December 06, 2017 15:18

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

 

 

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  chris

  • December 08, 2017 00:59

  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.

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  glaesner

  • December 08, 2017 12:20
  • Edited

  ...did it myslef in the meantime with OpenCV and some Python code... ;-)

   

  

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  Götz Echtenacher

  • December 17, 2017 13:58

  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...  ;-)

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  glaesner

  • December 18, 2017 13:07

  ...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:

  

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  Götz Echtenacher

  • December 18, 2017 14:50

  Nice!

  So you input the images and you get a point list which you then import into RC?

   

   

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  glaesner

  • December 18, 2017 14:58
  • Edited

  ...exactly. In addition the tool produces a marked version of each image with a distinctive filename to check if the markers are found correctly:

  

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