On Sat, 2010-04-24 at 17:28 -0500, RayTheRat wrote: > So it's off to find something other than GIMP or PhotoShop, neither of > which are suited to my needs. > I have no idea whether it would do what you require, but have you looked at the ImageMagick package? ImageMagick is a set of command line programs that can be combined in shell scripts. Consequently, the programs in that package really shine if you need to do the same set of operations on a whole stack of images. Martin