For most of these filters you find the code and innerloop; which ends up containing the most important bits of the formula in the sources for the GEGL operations, like gegl/operations/common/exposure.c and also in the folder gegl/operations/common-gpl3+ . However beware that the innerloop does not tell the whole story; as operations also constrain the type of pixel encodings they accept. For instance gegl:exposure ensures that the component values are linear, the math would be wrong if applied to 8bit sRGB data or floating point sRGB data.
/pippin On Thu, Apr 16, 2020 at 9:34 PM Simone80 <for...@gimpusers.com> wrote: > > Hi All, > > I am interested in the color transformations of the tools like > brightness-contrast, hue-chroma, hue-saturation, saturation, exposure, color > balance, color temperature, ... > > Do you know where I can find the details of these tools, in particular the > mathematical equations behind them? > > Thank you in advance for your help. > > Simone > > -- > Simone80 (via www.gimpusers.com/forums) > _______________________________________________ > gimp-user-list mailing list > List address: gimp-user-list@gnome.org > List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list > List archives: https://mail.gnome.org/archives/gimp-user-list _______________________________________________ gimp-user-list mailing list List address: gimp-user-list@gnome.org List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list List archives: https://mail.gnome.org/archives/gimp-user-list
