Intrinsic Calibrations and Coordinate Systems

[burritobrittany]

While investigating the relationship between Caltech and Metashape calibrations, it has come to my attention the coordinate systems defined in the manual may be misleading- particularly the relationship between XYZc and UV. What is shown in the manual is an undistorted relationship between the two- XYZc and UV have opposite X and Y directions. Actually, when calculating the distortion (distortUV, etc) we are using the Caltech model, which has XYZc and UV with the same directionality. This does not affect the results.... since the caltech calibrations are loaded as is, radial and tangential distortion are calculated correctly. However, it may trick expert users up who are trying to use other calibrations from other toolboxes, etc who look at the manual. I do not think this needs a change in the code- but rather clarification in the manual.