Changing image orientation

Change Image Orientation does not apply to digital images since they do not contain data strips or fiducial marks. Although it is not necessary to position the aerial photographs in a specific manner, you may find it easier to work with your images when they appear on the screen in a particular fashion:

You can rotate your images until the tops are closest to North so they correspond to the map coordinate reference frame, which makes collecting ground control points (GCPs) easier.
You can rotate the images so that the along-strip overlap is along a left to right axis, which makes tie point collection easier and is convenient for projects that require stereo overlap such as digital elevation model (DEM) extraction.

Under Output Directory, click:
- Same directory as input image to save your rotated images in the same folder as the raw images.
- All output to this directory and type the path in the box underneath or click Browse to select a folder.
Select Delete input image when complete to delete the raw images from the disk.
Under Images to Rotate in the Rotate/Flip column, click the boxes corresponding to the images that you want to rotate or flip or click All to select all the available photos. The Input File column shows the file names of the raw images. The Output File column shows the file names that will be used for the rotated images. By default, the output file name is the input file name appended with "_R" with the same extension. You can change the file name by clicking the output file name and typing the name of your choice.
Under Rotate/Flip Operation, click a rotate button and/or a flip button to achieve the direction of your choice.
In Working cache, type the amount of RAM that you allocate for this process. You can adjust the Working Cache to limit the amount of memory used to allow other tasks to be completed. Due to disk cache requirements, rotations of +90 and -90 degrees take much longer than 180 degree rotations.
Under Processing Start Time, click Start now or Start at (hh:mm) and set the time when you want the operation to begin (within the next 24 hours).
Click Rotate. When the image is rotated and/or flipped, the image's GCPs, tie points, clip area, fiducial marks, and calibration edge are modified to match the new orientation.