Hi,
G'MIC (formerly called GreyCStoration) is amazing at
de-screening if you get the parameters right, and if
you're not afraid of the command-line:
http://gmic.sourceforge.net/gimp.shtml
Have a look at this excellent demonstration:
http://cimg.sourceforge.net/greycstoration/img/res_tunisie.html
I have used it for non-linear image scaling, and image in-painting,
it's really very impressive, with a correspondingly unimpressive
user interface.
Dawid
On 24 May 2010, at 2:28 PM, Wayne Harridge wrote:
> Does anyone on the list have any experience of descreening scanned
> images ?
>
> A friend wants to produce the best print possible from a scan of a
> printed
> photograph, it looks like it might be from a newspaper/magazine. He
> doesn't
> have access to the original but has a scan made by the State Library
> of
> Victoria as a starting point. The print screen seems to be pretty
> well
> resolved in the scan which was done at 300dpi from the approx. 10"x8"
> printed image.
>
> I have uploaded the scan here:
> http://lrh.structuregraphs.com/images/roper.jpg (about 6Mb)
>
> Any suggestions welcome.
>
> ...Wayne
>
> Wayne Harridge
> http://lrh.structuregraphs.com/
>
>
> --
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