On Tue, 14 Mar 2000, Steinar H. Gunderson wrote: > Uwe, > > There appears to be some problems in this algorithm. I'm certainly no colour > expert, but the weak point seems to be in: > > >2. take a color pick of some point that has to be gray (say: 123 / 115 / 139) > > How can you know that this colour is supposed to be grey, and not a gray with > a tint of blue, for instance? The problem is finding what is supposed to be > exactly gray :-) No problemo... 123, 123, 123 is a shade of gray 115, 115, 115 is a shade of gray 139, 139, 139 is a shade of gray Trust the numbers, they don't lie. -- Jon Winters http://www.obscurasite.com/ "Everybody loves the GIMP!" http://www.gimp.org/