[Digikam-devel] Fwd: New GreyCstoration

[Gilles Caulier]

---------- Forwarded message ----------
From: Gilles Caulier <caulier.gilles at gmail.com>
Date: 12 mars 2007 16:45
Subject: Re: [Digikam-devel] New GreyCstoration
To: mbing at planet.nl

here :

ftp://ftp.kde.org/pub/kde/unstable/snapshots/

you can find daily snapshot of svn.

digikam & DigikamImagePlugins are hosted in kdeextragear-graphics.

Gilles

2007/3/12, Mike Bing <mvoorberg at yahoo.com>:
>
>
>
> *Gilles Caulier <caulier.gilles at gmail.com >* wrote:
>
> Restoration plugin ported into svn. I need help about to find Restoration
> preset values. Look my commit message for details :
>
>
> http://websvn.kde.org/trunk/extragear/graphics/digikamimageplugins/restoration/imageeffect_restoration.cpp?revision=641768&view=markup
>
> Thanks in advance for your help
>
> Gilles
>
> 2007/3/12, Mike Bing <mvoorberg at yahoo.com>:
> >
> >
> >
> > *Gilles Caulier <caulier.gilles at gmail.com>* wrote:
> >
> > I'm currently porting the code (:=)))
> >
> > I have just completed "Restoration" plugin at now. The speed is
> > impressive (more than 3x : around 10x i think).
> >
> > I will finalize all source code during this week, including Inpainting
> > and Blowup plugins.
> >
> > I will very appreciate all feedback about this port using current
> > implementation from svn...
> >
> > I will post a commit message in this mailing list when the code will be
> > ready to test.
> >
> > Gilles Caulier
> >
> > Gilles,
> >
> > Awesome news. I have sent David a very noisy 400ISO Canon 8Mp image to
> > work with and its NeatImage output. He is currently working on getting
> > similar results which might gives us some more insights to the correct
> > values of the many switches.
> >
> > As for the speed increase, I'm happy to say I have at least contributed
> > a bit there by suggesting to David he include tiling in the processing in
> > order to minimize HDD swapping due to memory constraints. I sent him a proof
> > of concept in the form of a bash script and he took up on that challenge
> > ending up adding even more memory tweaks which resulted in the current
> > situation.
> >
> > The parameter "-tile"  is important to tweak the memory footprint so I
> > assume (and hope) it is a setting in the new restoration plugin?
> >
> > Mike Bing wrote:
> > >
> > > Do you have any tips on parameters for high-ISO noise? I use:
> >
> >
> > > greycstoration -restore $X.jpg -dl 1.5 -sigma 3.0 -p1 0.1 -p2 0.9
> > > -prec 3 -linear 0 -da 45 -dt   DT  -iter ITER  -visu off -o $X-nr.jpg
> > > where I have the following presets:
> > >
> > >
> >
> >  When you have high-iso noise, a good idea is to increase the '-alpha'
> >
> > parameter rather than the 'sigma' one. Actually, it is not very clear
> > for me what set of
> >  parameters are the best ones. I'm still trying to
> >
> >
> > understand the exact role of each parameter, I mean not the
> > mathematical
> > meaning (I can explain this very well..) but the effect in terms of
> > psychovision or something like this.
> > That's unfortunately research work and a lot of open questions
> >
> >
> > remain...
> >
> > Regards,
> >
> > David.
> >
> >
> >
> > ------------------------------
> >  Get your own web address.<http://us.rd.yahoo.com/evt=49678/*http://smallbusiness.yahoo.com/domains/?p=BESTDEAL>
> > Have a HUGE year through Yahoo! Small Business.
> >
>
> Gilles,
>
> The earliest I can try out the SVN is coming Saturday as I have no access
> to SVN at work. Is there any way you can send me a tar.gz snapshot by mail
> or make it available as a download?
>
> Mike
>
> ------------------------------
>  Get your own web address.<http://us.rd.yahoo.com/evt=49678/*http://smallbusiness.yahoo.com/domains/?p=BESTDEAL>
> Have a HUGE year through Yahoo! Small Business.
>
>
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