AN-331 FRAME 17 - 4 Wire Frame compensation
The wire mounted camera FRAME 17 calculates wire lengths that assume straight lines. This can result in errors due to the weight of the cables making the lines "sag".
The FRAME also assumes that the lines meet at a single point. Sometimes a flat plate is used to mount the camera and the lines are joined to the corners of the plate
The compensation method described here uses the existing COMPENSATE_XY function to provide offsets to the cable lengths from a look-up TABLE.