Grid Levelling Menu

Launches the processes for levelling grids:

• Get Overlaps finds the overlaps between grids and store them in a binary file – the Overlap Points File. No grids are adjusted.
• Get Relative Shift/Scales calculates the best shift (magnetics) or shift+scale (radiometrics) for each grid pair. The results are stored in an ASCII text file – the Overlap Grids File. No grids are adjusted.
• Get Absolute Shift/Scales And Apply calculates the best shift (magnetics) or shift+scale (radiometrics) for each grid using the information in the Overlap Grids File. Grids are then read from the input directory, adjusted, and written to the output directory.
• Get Grid Tilts And Apply tilts the grids using adjustments calculated from the overlap points in the Overlap Points File. Grids are read from the input directory, adjusted, and written to the output directory.