[Digikam-users] Fixing compressed digital photos

Dotan Cohen dotancohen at gmail.com
Sat Jun 30 13:09:35 BST 2007

On 30/06/07, Arnd Baecker <arnd.baecker at web.de> wrote:
> Hi Dotan,
> On Sat, 30 Jun 2007, Dotan Cohen wrote:
> > Lifehacker did a writeup on a Windows app that cleans up compressed
> > photos rather nicely:
> > http://lifehacker.com/software/featured-windows-download/fix-your-old-digital-pics-with-jpeg-enhancer-273502.php
> >
> > Is this feasable to add to Digikam? Is there another Linux app that
> > can do something similar? I have many pictures from the wife's camera
> > phone that were shot before I had the chance to change the settings.
> First one has to find a good algorithm to do the job,
> in the comments it is written that a deringer+deblocker
> would presumably do the job.
> Have a look at
> http://www.greyc.ensicaen.fr/~dtschump/greycstoration/demonstration.html
> In particular (move mous-over the image to see the difference)
> http://www.greyc.ensicaen.fr/~dtschump/greycstoration/img/res_gnome.html
> http://www.greyc.ensicaen.fr/~dtschump/greycstoration/img/res_reno.html
> Does this roughly do what you want?
> Greycstoration is included in digikam, though I have never tried
> that myself before (in particular, whether the above
> routines are accessible)...
> Try it out  and please report back!
> Best, Arnd

Thanks, Arnd. The "Removing JPEG block artefacts" feature is exactly
what I was looking for. I've only tried it on the GREYCstoration
website, but I'll be giving it a try locally soon.

Dotan Cohen


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