> > Prompted by a couple of "use ImageMagick" responses I've > fiddled about > > some more and come up with 'convert a b -compose difference > -composite' > > which seems to do the trick. > > > > Was this what you were thinking? > > Yes, I knew there was some composite function in IM which calculates > differences, but didn't remember in which command, not having used it > myself, or I would have given more detail. Didn't know there was more > than one way ;) > > Volker
Wasn't quite sure what he wanted myself - have you ever used the compare functions in anger? I haven't found a need as yet - identify, stream, montage and convert have been the only useful aspects of IM for me so far. (too chicken to use mogrify). :-)
