First a ``Database File Selection'' dialog is popped up. Once a supported database file has been selected with this dialog, an image data loading panel will pop up. Using this panel, either one, or three channels must be loaded. These channels will determine the imagery shown for tie-down purposes; however, in the ``Perform Registration To Disk'' step, additional input channels can be selected for correction.
To complete the ``Select Uncorrected Image'' step, it is necessary to select the ``Load & Close'' or ``Close'' button on the load panel.
The ``Select Uncorrected Image'' step may be performed at any time; however, all gathered GCPs and mosaic cut lines will be lost if not already saved.
If the selected uncorrected file contains only bitmap segments, they will be offered for selection instead of image channels.