When the tracking and solving processes are complete, you can use the solve data to align and scale the scene before adding cameras, point clouds, objects, and so on.
You can:
• Set the ground plane, axes, or origin for the scene. See Setting the Ground Plane and Axes.
• Manually adjust the scene using the Scene tab's Scene Transform controls. See Transforming the Scene Manually.
• Use known distances, measured on set, to scale a scene more accurately. See Using Scene Constraints.