Digital BW, The Print

Joost,

by using RGB as number from 1 to 256 we automatically take into account color of dots, measure tool under analyze menu calculates area and mean RGB of selection, so we need only select by range of color and measure.

Jacob


-- In DigitalBlackandWhiteThePrint@yahoogroups.com, "horstenj" <j.h.j.h@...> wrote:
>
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Jacob" <flashinet@> wrote:
> >
> >[...] Then I calculated:
> > roughness = (white area size * white area RGB)/(gray area size * gray area RGB)
> 
> Just out of interest a highly academic question: what does "gray" exactly means? I assume "non-white". If so, one very light dot against a white background contributes as much to "roughness" as a black one, which goes against my intuition. But as said, I guess it is of academic relevance only...
> 
> Joost
>