On Tue, Nov 12, 2013 at 4:39 AM, Wolfgang Hugemann <a...@hugemann.de> wrote: > ... > However, there seems to be no way to display the histogramm in terms of > brightness in Gimp (?). The "value" seems to be just max(R,G,B). But > luminance is generally caculated by > Y = 0.2126 R + 0.7152 G + 0.0722 B > see http://en.wikipedia.org/wiki/Luminance_%28relative%29. > > Wouldn't it make sense to offer this option?
In my opinion, the (still) widespread use of value = max(max(r,g),b) is a remnant of 8bit image processing centric performance short-cuts. We would be better off by using luminance in most or all the cases where this approach is currently used. /pippin _______________________________________________ gimp-user-list mailing list List address: gimp-user-list@gnome.org List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list
