Calibration compatibility uvmat/fluidimage
When using the class Calibration in fluidimage.calibration.calib_tsai using xml file created by uvmat.
In uvmat the reference for height of the slices (Z) is the physical coordinate (0,0). In fluidimage the reference seem to be the center of image.
It result wrong value of height when slices of calibration has a non zero angle and the chosen physical reference (0,0) in uvmat is not the center of image.