[chris_mc]

I wonder if you could position posts or boxes (some physical object) with "weird" shapes that could be used as fixed, recognizable points for this sort of thing? So when your sensor picks it up, it's easy to immediately know that this specific object matches to object ID #1234 which is in a specific, known lat/lon/altitude/rotation/translation position.

Something like steganography for these sensors in the real world: https://en.wikipedia.org/wiki/Machine_Identification_Code

[pas]

Well, we used this for local calibration: https://github.com/MarekKowalski/LiveScan3D/tree/master/docs... of course this is only to calibrate the feeds relative to each other.

But coupled with GPS almost any shape could work. (Hills, landmarks, buildings.)

[jefft255]

This is very much in use when possible. They are called fiducial markers, or sometimes registration targets, registration markers etc.