Hello!
I stumbled upon the article Gamma error in picture scaling http://www.4p8.com/eric.brasseur/gamma.html#Use_a_correct_software recently. I was actually pointed to it be some tool applying the proper algortihm. I think it was command line. Especially as I don't trust ImageMagick with files that matter I would love to find (or re-find) a command line tool that properly handles Gamma when resizing images. Needs be free software. Anyone? Thanks, Sebastian