The Gimp plug-in descreen works in the
frequency domain by means of a fourier
decomposition. I think, darktable has means to
do this too, but I don't know how or if the
pixel patches aren't simply too large.
Exactly in commercial print - all dots are at 100% density. They are
smaller or
A starting point would be to watch
https://www.youtube.com/watch?v=zzVXK4eAM5E
This is quite old but still very valid . have you seen this??
On 08/31/2018 01:44 PM, ternaryd wrote:
> On Fri, 31 Aug 2018 13:25:31 -0700
> David Vincent-Jones wrote:
>
>> Since the Gimp process is using FFT
There are some good on-line tutorials and ... Step #1 read the manual.
On 08/31/2018 01:44 PM, ternaryd wrote:
> On Fri, 31 Aug 2018 13:25:31 -0700
> David Vincent-Jones wrote:
>
>> Since the Gimp process is using FFT ... using
>> the equalizer in dt could provide similar
>> results.
>>
On Fri, 31 Aug 2018 13:25:31 -0700
David Vincent-Jones wrote:
> Since the Gimp process is using FFT ... using
> the equalizer in dt could provide similar
> results.
> Did you try that and what was the result?
No, I did not. I guess there is some
understanding of it I'm lacking...
The dt equalizer is using Fourier Transform as is the Gimp process
you may need to understand how it works to get a reasonable result
rather than relying on 'pushing-a-button' and expecting results.
On 08/31/2018 01:26 PM, ternaryd wrote:
> On Fri, 31 Aug 2018 15:27:53 -0400
> Michael
On Fri, 31 Aug 2018 15:27:53 -0400
Michael wrote:
> follow the thread?
> https://www.dpreview.com/forums/post/60637838
I hadn't, but did now. There is a second
suggestion with denoise non-local means, which
I also tried unsuccessfully.
I believe that those solutions are for a
different
Since the Gimp process is using FFT ... using the equalizer in dt could
provide similar results.
Did you try that and what was the result?
On 08/31/2018 11:12 AM, Michael wrote:
> it looked as if descreen got rid of pattern noise (or what could be
> interpretted as).
>
> On Fri, Aug 31, 2018 at
a quick search revealed:
https://www.dpreview.com/forums/post/60633401
On Fri, Aug 31, 2018 at 2:27 PM, ternaryd wrote:
> On Fri, 31 Aug 2018 14:12:58 -0400
> Michael wrote:
>
> > it looked as if descreen got rid of pattern
> > noise (or what could be > interpretted as).
>
> Yes. Can that be
On Fri, 31 Aug 2018 14:12:58 -0400
Michael wrote:
> it looked as if descreen got rid of pattern
> noise (or what could be > interpretted as).
Yes. Can that be removed in darktable?
darktable user mailing list
to
On Fri, 31 Aug 2018 11:14:35 -0700
"I. Ivanov" wrote:
> To my best knowledge - it is not possible to
> use Gimp plug-in in darktable.
I didn't expect a Gimp plug-in itself to work
in darktable, but hoped there is something in
darktable allowing me to achieve the same or a
similar effect.
Hence, my question: Can the descreen operation
of that Gimp plug-in been done in darktable? A
demonstration of this operation can be seen for
instance on http://www.zoyinc.com/?p=1529
To my best knowledge - it is not possible to use Gimp plug-in in darktable.
I have never seen a plugin in
it looked as if descreen got rid of pattern noise (or what could be
interpretted as).
On Fri, Aug 31, 2018 at 2:09 PM, Patrick Shanahan wrote:
> * ternaryd [08-31-18 14:04]:
> > On Fri, 31 Aug 2018 10:16:21 -0400
> > Patrick Shanahan wrote:
> >
> > > > Is there a method in darktable to do
* ternaryd [08-31-18 14:04]:
> On Fri, 31 Aug 2018 10:16:21 -0400
> Patrick Shanahan wrote:
>
> > > Is there a method in darktable to do undestructibly what the
> > > descreen plug-in does in Gimp?
> >
> > operations in dt are non-destructive to your original image. period.
>
> Hence, my
On Fri, 31 Aug 2018 10:16:21 -0400
Patrick Shanahan wrote:
> > Is there a method in darktable to do
> > undestructibly what the descreen plug-in
> > does in Gimp?
>
> operations in dt are non-destructive to your
> original image. period.
Hence, my question: Can the descreen operation
of that
When using tools like the spot removal or drawn masks (like with the
pencil icon), as far as I know you have to this one by one. Add one,
then click again on the same icon to add another one etc. etc. Is there
a way, perhaps a key combination I missed, to keep on adding them in one
flow? Like
Incredible :) Yes, this works. Thanks Remco.
Would be nice though to have these kind of functions right where the
rest is, or with a plus and minus sign to choose how the next aplied
mask is going to behave on the first one created.
Jack
Op 31-08-18 om 15:50 schreef Remco Viëtor:
On
* ternaryd [08-31-18 09:35]:
> Hi,
>
> Is there a method in darktable to do
> undestructibly what the descreen plug-in does in
> Gimp?
operations in dt are non-destructive to your original image. period.
unless you *overwrite* the original, but that is your doing, not dt.
--
(paka)Patrick
On vendredi 31 août 2018 14:07:58 CEST kneops wrote:
> Am I right in understanding that I can combine one (set of) drawn masks
> with a parametric mask, but that I cannot add or substract one drawn
> mask from another drawn mask?
>
> I'm thinking of the way selections work in other software where
Not sure it works in all cases.
But I did do the same thing with exposure, albeit it was not a strong
adjustment (exposure was +0.5 on a gredient). Because I did it via two
modules, and the way the pixel pipe works, there likely is the potential
for data loss and not get a "perfect reversal". In
Am I right in understanding that I can combine one (set of) drawn masks
with a parametric mask, but that I cannot add or substract one drawn
mask from another drawn mask?
I'm thinking of the way selections work in other software where you can
add or substract a new selection from an already
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