Fig 3. Top view of 3D camera room.

The reference board was placed at the capturing position which was aligned with laser beams. The vertical laser plane V2 from side laser was aligned with side wall landmarks (dotted lines marked with pencil) which indicate the mirror plane (pitch and yaw). Another vertical laser plane V2’ and V2” from front lasers indicate true verticals on the reference board pattern (roll). Two front alignment lasers offer cross validation of the angulation adjustments.