X-Ray versus Light Field centres difference
In the example figures above, the witdh is vertical because the test object is rotated by 90°
From the positions of the two fields (X-Ray and Light) the differences of centres on width and height directions are calculated. The difference has a sign: positive values mean that the X-Ray field centre is on the right/lower than the light field centre.
Centres difference on width = :
Centres difference on height = :
CWX= Centre on width of the X-Ray field CWL= Centre on width of the light field CHX= Centre on height of the X-Ray field CHL= Centre on height of the light field