On 07/14/2012 03:56 PM, Robert Krawitz wrote: > On Sun, 15 Jul 2012 01:19:52 +0400, Alexandre Prokoudine wrote: >> On Sat, Jul 14, 2012 at 12:35 PM, Martin Jambon wrote: >>> Hi, >>> >>> I am totally new here but I wrote a standalone program that does a >>> decent job of removing purple fringing from photos, and I would like to >>> be able to implement the same functionality for Gimp. >>> >>> Here are some examples of what it does: >>> >>> http://mjambon.com/purple-fringe/examples.html >>> >>> My algorithm needs to perform pixelwise operations (+, -, min, max >>> between two channels; scaling of one channel) but I also would prefer >>> something that is easy to install (for users) and easy to maintain (for me). >>> >>> The OCaml source code is here; it should give an idea of what's needed: >>> >>> https://github.com/mjambon/purple-fringe/blob/master/src/unpurple.ml >>> >>> (see functions make_purple_blur and remove_purple_blur, lines 103-177) >>> >>> >>> My questions are: >>> >>> 1. Is it possible to do that using a Gimp script? >>> >>> 2. If so, Scheme or Python? >>> >>> 3. If a plugin makes more sense, will average users be able to install >>> it for themselves or would I have to wait for the inclusion in some >>> standard precompiled distribution? >> >> Just in case, are you aware of http://kcd.sourceforge.net/fix-ca.php ? > > BTW, Martin, I'd suggest optimizing it -- 1 second/megapixel is a fair > amount of time for someone processing a lot of 18 MP images, and people > with Nikon D800's will be even more unhappy. You may also want to talk > with the ImageMagick folks about getting it included there. This could > become a very important part of a photographic workflow. Right. I'd like to try built-in implementations of blur algorithms first, since it is likely to remain the bottleneck of my algorithm. If that's not enough, some parallelization should help. Martin _______________________________________________ gimp-developer-list mailing list gimp-developer-list@xxxxxxxxx https://mail.gnome.org/mailman/listinfo/gimp-developer-list
