From: Dalle Ali on
ImageAnalyst <imageanalyst(a)mailinator.com> wrote in message <f0715a96-d5a2-48ef-941b-14a1d4ed9320(a)u7g2000yqm.googlegroups.com>...
> I think 256 must be the default for uint8 and 4096 for uint16
> regardless of how the gray levels are ACTUALLY distributed in there.
> So the upper bins could be zero but they'll still be there. This is
> convenient because you don't want different sized histograms every
> time you take the hist of a grayscale image. Since you didn't scale
> your image it still lies in the 0-255 range and the bins from 256-4095
> are probably all zero.

you're exactly right, even though not entirely the upper bins from 256-4095 are zero, but maybe that's just a tweaks or something..
allrite, thx very much for your help ImageAnalyst ;)

cheers,
Dalle