"David Gowers" <00ai99@xxxxxxxxx> writes: [...] > plug_in_decompose decomposes the image into a layer per channel. Thanks >> Searching the archives today I notice that Pedro Paf was suggesting >> implementing it as a Summer of Code project - as the algorithm is very >> simple (a day to make even starting no numpy or Gimp python >> knowledge), what enhancements where being contemplated? > > I find this odd -- your whole email odd, in fact, because -- there is > already a retinex plugin (found at Colours->Retinex; > plug-ins/common/retinex.c in the GIMP source tree.). If you want to > add some enhancements, perhaps you could check that out first. The retinex plugin is not documented. (As far as I can see?) What do the different parameters to it mean? Even after looking at the paper it is supposedly based on (multsclrtx.ps) I don't understand the parameters. There are many different retinex algorithms based on widely different principles; it is true that this one and the McCann one are similar in some respects. Obviously, I experimented with it a few times, but I couldn't get it to work before I gave up. The objective of my implementation of is to brighten dark areas of the image while preserving detail, and it has a very noticeable effect. Compare the outputs. Probably the best way to use my code is to select the non-flatten option and adjust the opacity of the retinex layer afterwards. _______________________________________________ Gimp-developer mailing list Gimp-developer@xxxxxxxxxxxxxxxxxxxxxx https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer
