Scanning tips?

[Fernando M Lacerda]

On Mon, Mar 17, 2008 at 3:56 PM, Fernando M Lacerda
<fernandomlac at gmail.com> wrote:
> > Christopher Stamper wrote:
>  >  > On Mon, Mar 17, 2008 at 2:22 PM, Cory K. <coryisatm at nc.rr.com
>  >  >
>
> >  >     I was wondering if anyone has tips for reducing the amount of printing
>  >  >     dots one sees when you scan something? ie: CD cover.
>  >  >
>  >  >     I scan around 300dpi and use "Despeckle" in GIMP but I still don't get
>  >  >     the result I would like.
>  >  >
>  >  >     Any ideas?
>  >
>
> >  > 300dpi is pretty low...
>  >  >
>  >  > Why not set it higher?
>  >
>  >  I really love the replies that don't address the question. ;)
>  >
>  >  But as long as your next reply addresses my original question, and
>  >  doesn't continue to stray, I'll answer.
>  >
>  >  A: Because the end format is 1000x1000px at 72 DPI. Doesn't really matter.
>  >  Higher res just means better defined dots.
>
>  Actually, I believe it matters. It doesn't depend on the _end format_
>  you want, but on the _source media_ you're scanning. I believe the
>  better result is obtained when you scan in a resolution twice the
>  resolution of the source material you're scanning. After that you can
>  reduce the image to the end format you want.
>
>  Regards,
>
>  Fernando L.
>

Sorry about the double post, but I've forgotten one recommendation.
You should apply the despeckle effect on the image -- and maybe a bit
of sharpening also (to do some sort of "counter-despeckle" effect) --
_before_ reducing it to the end format. This should get better
results.

Cheers!

Fernando L.