I browsed through the fora and the FAQ, while the FAQ mentioned that files may be resubmitted I could not find any guidelines on how this should be done.
So... my question:
How do I resubmit rejected images?
Just submit them the same way you did the first time. Be sure to include a note to the reviewer that it's a resub and what you've done to correct it (e.g., "resubmission: I corrected the white balance").