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aruCo module, world space coordinates?

Hi, I need to move a camera, and know exactly how far it has traveled. I need to do this with a mono camera, or it would be simple, using stereo odometry.

I am looking into the aRuCo module in openCv, which returns the camera pose.

My question is:

Since the size of the board / marker is known, is the camera translation returned in accurate world-space coordinates, or not?

eg, if I move a meter, will the tvec value reflect that in a repeatable way?