On 4/13/06, Stephen Norris <[EMAIL PROTECTED]> wrote:
> On Thu, 2006-04-13 at 13:45 +0800, steven woody wrote:
> > hi,
> >
> > i usually need different size of image for different situations ( web
> > publish, sharing with friends, etc. ).  so it seems practical to
> > complete all editing on the image before do the downscaling.  quite
> > often, i will use a utility such as ImageMagic's convert to do the
> > downscaling and converting to other suitable formats.
> >
> > but, gimp's tutorial suggests that one should do some editing tasks (
> > such as sharping ) after downscaling ( or upscaling ).  i want to know
> > why and how do you do that ?
> >
> > what i expected workflow of image editing is:
> >
> > 1) improve contrast and color balance in gimp
> > 2) despeckle
> > 3) sharping
> > 4) add frame/border
> > 5) downscaling to various of sizes and convert to other formats using
> > a script-able tool.
> >
> > thanks.
>
> Sharpening after downsampling is normal - the downsampling operation
> makes the image more fuzzy as a natural consequence, so you generally
> have to sharpen afterwards.


ok. then how about despeckle? can i do despeckle before

> Since you need to do that, there's no point
> sharpening beforehand as well.

i need sharpening beforehand is because the image is scanned out from
film scanner, the result is a little soft comparing to original.

>
>         Stephen
>
>


--
woody
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