How can I get the axis vectors?

[agontarz]

First of all, thank you! this works great.

I am trying to get the x,y,z (the red ,green, and blue colored lines) as three directional vectors. Is there an easy way to do this within the aruco library?

[njanirudh]

Unfortunately I am not familiar with any other way to draw the axis pose.
I guess you will have to use the rvecs and tvecs obtained to draw it yourself.