Calibration pattern chessboard

Question

Hi Ros users:

I am doing a calibration camera and I have to have a calibration pattern in Gazebo. I like to know if there is a .stl calibration pattern chessboard file on the internet to do that. And if there is not, how can I do it?

Thanks a lot.

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Originally posted by Alvaro Salcedo on ROS Answers with karma: 149 on 2015-10-19

Post score: 2

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Original comments

Comment by gvdhoorn on 2015-10-20:
Is this a duplicate of textures in a stl file?

Comment by Alvaro Salcedo on 2015-10-22:
both are fixed. Thanks

Answer 1

You can render a checker/chessboard texture in gimp, export it as a png.

Or search for an existing one https://www.google.com/search?q=checkerboard+opencv&source=lnms&tbm=isch

Then create a plate model in Blender and apply the saved texture to a face using a tutorial like https://www.youtube.com/watch?v=POWq9aeDLls

Export the textured cube model as an obj, load it into meshlab, then export it as a dae (dae works better than stl in Gazebo).

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Originally posted by lucasw with karma: 8729 on 2015-10-20

This answer was ACCEPTED on the original site

Post score: 3

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Original comments

Comment by Alvaro Salcedo on 2015-10-22:
Thanks a lor. Problem fixed.