Reading through this thread, could this mean that we can see CMYK in GIMP soon? (natively) On 9 October 2013 23:00, Simon Budig <simon@xxxxxxxx> wrote: > Elle Stone (l.elle.stone@xxxxxxxxx) wrote: > > In the meantime, if anyone would like to read it and give feedback, > > corrections, suggestions, I'll edit the Guide to make it more clear, > > more useful, etc (if nobody is interested, that's OK too!). > > I think it is very helpful. I've been dabbeling with colors some time > ago (trying to improve the color reproduction of a network camera) but > did not dive into the "profiling" area. > > Some remarks: > > In section B3 I had trouble following, because having five XYZ > coordinates to specify a RGB cube (with - as you claim - additive light) > seems over-determined. It is not clear how RGB(1,1,1) - i.e. additive > RGB(1,0,0) + RGB(0,1,0) + RGB(0,0,1) results in the specified white > point. The same problem is there with the black point. *if* this stuff > is additive, then black always will be the absence of R, G, B, i.e. a > pitch black XYZ(0,0,0). So there is a dragon lurking when claiming > additivety. > > Another (slightly philosophical) issue for me is, that you never explain > what you mean by color. You write that "every real color (that is, every > color out there in the world, that humans can see) has a unique > location". > > It might be worth noting, that this is different from looking at color > as "a specific intensity-distribution of wavelengths". There are > different intensity-distributions that map to the same XYZ coordinate. > While a person with normal eye-sight perceives these two > "intensity-distributions" as the same color (and for these purposes XYZ > is perfectly OK) a person with a color vision deficiency might be able > to keep them apart - > see e.g. http://en.wikipedia.org/wiki/Colorblindness#cite_note-5 > > I am not sure if mentioning this helps or if it confuses stuff... :) > > Bye, > Simon > > -- > simon@xxxxxxxx http://simon.budig.de/ > _______________________________________________ > gimp-developer-list mailing list > List address: gimp-developer-list@xxxxxxxxx > List membership: > https://mail.gnome.org/mailman/listinfo/gimp-developer-list > _______________________________________________ gimp-developer-list mailing list List address: gimp-developer-list@xxxxxxxxx List membership: https://mail.gnome.org/mailman/listinfo/gimp-developer-list
