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