# World reference

After calibration, the reference coordinate system origin will be fixed to some random camera. This is of course a little hard to deal with and we would like to switch to a reference frame where the ground plane corresponds to the floor of our real location. We can do that through the _World reference_ tab.

Using the typical calibration board we can:

1. Lay it on the floor of our motion capture volume
2. Click "Find Coordinate Frame"
3. Once satisfied with the position of the board, click "Set World Frame" to change the reference frame in the 3D view
4. Click "Apply to Scene" to save it to our project