Hi,
I think, it's can be great to beginner user to have preset for the
module denois (profiled)
as i have folowed darktable-devel list, i known 2 parameter are working
great in this module (can use both at the same time) :
Mode : non-local means ; blend mode lightness
Mode : wavelets ; blend mode : color
I think, it's can be great to have a default preset of both (& might a
another one with both integraded with 2 multiple instance ? )
Personnaly, i have created a style to use them easly ...
Regards
Le lundi 27 mai 2013 à 09:57 +0000,
[email protected] a écrit :
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> 1. Re: SONY Alpha high ISO RAW noise cannot be beaten? Even not
> with profiled denoise... (johannes hanika)
> 2. Re: SONY Alpha high ISO RAW noise cannot be beaten? Even not
> with profiled denoise... (Baptiste Pierrat)
> pièce jointe MHTML Document
> > -------- Message transféré --------
> > De: johannes hanika <[email protected]>
> > À: suni <[email protected]>
> > Cc: darktable-users <[email protected]>
> > Sujet: Re: [Darktable-users] SONY Alpha high ISO RAW noise cannot be
> > beaten? Even not with profiled denoise...
> > Date: Mon, 27 May 2013 11:25:23 +0200
> >
> > you left in all the luma noise in your lightroom comparison image.
> > to do that in darktable, use `color' blend mode in the profiled
> > denoising module. you may want to use the wavelet method, it is
> > usually a little more effective against color noise.
> >
> >
> > j.
> >
> >
> > On Mon, May 27, 2013 at 11:21 AM, suni <[email protected]> wrote:
> > Hi all,
> >
> >
> > I'm fighting the high ISO noise of my A550 camera, but I
> > still cannot achieve the reasonable output. Even the new
> > profiled denoise filter doesn't help much.
> >
> >
> > Below is the example of the ISO12800 image. I do not take
> > images on such high ISO but it makes this problem more
> > visible for this purpose. This behaviour may be observed
> > even at ISO1600 and higher. The RAW image below is totally
> > unaltered RAW for comparison opened side by side in dt and
> > in Lt. Only the base curve is applied at dt side because
> > otherwise the image looks very ugly and not comparable to
> > the Lt from the visual point of view.
> >
> >
> > Link to unaltered RAW
> > image:
> > https://dl.dropboxusercontent.com/u/9454436/sony_noise/raw_not_altered.jpg
> >
> >
> > As you can see the image looks almost the same in both
> > tools. Just note the bright red dots. The Lt shows less of
> > them especially on the right side of the paper Christmas
> > tree. These red dots cannot be removed by any of the dt
> > denoising filters unless the image becomes almost blurred.
> >
> >
> > Now see the next image below. This shows what can be
> > achieved in dt and in Lt. While only activating the luma and
> > chroma denoise sliders in Lt produces the acceptable and (to
> > me) pretty usable output where only some luma noise remains,
> > with dt I cannot achieve similar output by no means. The
> > most strange finding is that no one from all the denoising
> > filters available in dt can remove these bright red dots
> > unless it is pushed to not acceptable high strength
> > producing the blurred image. The only strategy I found to be
> > somehow working here is as follows:
> > 1) turn off the sharpen filter
> > 2) apply the hot pixel filter at its maximum strength
> > 3) set the color smoothing of the demosaic filter to maximum
> >
> >
> > These three steps do remove the bright red dots. But the
> > image still suffers of the high chroma noise. The only
> > possible way to get rid of it while maintaining the image
> > sharpness at the level comparable to the Lt I found is the
> > profiled denoise set to less than default strength. But as
> > you can see there still remain far more chroma noise than in
> > the Lt case.
> >
> >
> > Link to altered RAW
> > image:
> > https://dl.dropboxusercontent.com/u/9454436/sony_noise/raw_altered.jpg
> >
> >
> >
> > Because I've got to that point I didn't know what to do
> > more, I profiled my camera. But even though my profile seems
> > to me to be a bit better than the one packed with dt, it
> > produces no visible difference here.
> >
> >
> > I would like to ask all of you experienced in fighting the
> > high ISO noise for your experiences and recommendations. It
> > would be great to get to know that the problem is in between
> > the chair and the keyboard, not in the excellent dt tool!:-)
> >
> >
> > If someone is interested, the original RAW image can be
> > found
> > here:
> > https://dl.dropboxusercontent.com/u/9454436/sony_noise/DSC09533.ARW
> >
> >
> >
> >
> > Thank you in advance for any reply!
> >
> >
> > Suni
> >
> >
> > ------------------------------------------------------------------------------
> > Try New Relic Now & We'll Send You this Cool Shirt
> > New Relic is the only SaaS-based application performance
> > monitoring service
> > that delivers powerful full stack analytics. Optimize and
> > monitor your
> > browser, app, & servers with just a few lines of code. Try
> > New Relic
> > and get this awesome Nerd Life shirt!
> > http://p.sf.net/sfu/newrelic_d2d_may
> > _______________________________________________
> > Darktable-users mailing list
> > [email protected]
> > https://lists.sourceforge.net/lists/listinfo/darktable-users
> >
> >
> >
> pièce jointe MHTML Document
> > -------- Message transféré --------
> > De: Baptiste Pierrat <[email protected]>
> > À: johannes hanika <[email protected]>
> > Cc: darktable-users <[email protected]>
> > Sujet: Re: [Darktable-users] SONY Alpha high ISO RAW noise cannot be
> > beaten? Even not with profiled denoise...
> > Date: Mon, 27 May 2013 11:57:00 +0200
> >
> > Hello,
> >
> >
> > I want to second this problem.
> >
> >
> > I have a Sony Alpha 57 and have a lot of trouble with remaining
> > bright color dots after denoising. My usual denoising tools for
> > iso>800 are :
> > 1. Chroma denoise: profiled denoising with wavelets, blend with
> > color, then
> > 2. Luma denoise: profiled denoising with non-local means, blend with
> > lightness
> >
> >
> > Here is an example with an iso 3200 sample:
> > original: http://minus.com/lU783RXDLcLH7
> > chroma denoised: http://minus.com/lBe1kgj6o5aoP
> > chroma and luma denoised: http://minus.com/lbqRsDO5q4E617
> > detail after export: http://minus.com/lCLmKR1s2vh5a
> >
> >
> > Green, red and blue larger dots remain. Also notice as chroma
> > denoising does not work well for green color. As suni, this problem
> > is partially solved by using the color smoothing option in demosaic
> > but the image is slightly blurred.
> >
> >
> > Thanks!
> >
> >
> > On Mon, May 27, 2013 at 11:25 AM, johannes hanika
> > <[email protected]> wrote:
> > you left in all the luma noise in your lightroom comparison
> > image. to do that in darktable, use `color' blend mode in
> > the profiled denoising module. you may want to use the
> > wavelet method, it is usually a little more effective
> > against color noise.
> >
> >
> > j.
> >
> >
> > On Mon, May 27, 2013 at 11:21 AM, suni <[email protected]>
> > wrote:
> >
> > Hi all,
> >
> >
> > I'm fighting the high ISO noise of my A550 camera,
> > but I still cannot achieve the reasonable output.
> > Even the new profiled denoise filter doesn't help
> > much.
> >
> >
> > Below is the example of the ISO12800 image. I do not
> > take images on such high ISO but it makes this
> > problem more visible for this purpose. This
> > behaviour may be observed even at ISO1600 and
> > higher. The RAW image below is totally unaltered RAW
> > for comparison opened side by side in dt and in Lt.
> > Only the base curve is applied at dt side because
> > otherwise the image looks very ugly and not
> > comparable to the Lt from the visual point of view.
> >
> >
> > Link to unaltered RAW
> > image:
> > https://dl.dropboxusercontent.com/u/9454436/sony_noise/raw_not_altered.jpg
> >
> >
> > As you can see the image looks almost the same in
> > both tools. Just note the bright red dots. The Lt
> > shows less of them especially on the right side of
> > the paper Christmas tree. These red dots cannot be
> > removed by any of the dt denoising filters unless
> > the image becomes almost blurred.
> >
> >
> > Now see the next image below. This shows what can be
> > achieved in dt and in Lt. While only activating the
> > luma and chroma denoise sliders in Lt produces the
> > acceptable and (to me) pretty usable output where
> > only some luma noise remains, with dt I cannot
> > achieve similar output by no means. The most strange
> > finding is that no one from all the denoising
> > filters available in dt can remove these bright red
> > dots unless it is pushed to not acceptable high
> > strength producing the blurred image. The only
> > strategy I found to be somehow working here is as
> > follows:
> > 1) turn off the sharpen filter
> > 2) apply the hot pixel filter at its maximum
> > strength
> > 3) set the color smoothing of the demosaic filter to
> > maximum
> >
> >
> > These three steps do remove the bright red dots. But
> > the image still suffers of the high chroma noise.
> > The only possible way to get rid of it while
> > maintaining the image sharpness at the level
> > comparable to the Lt I found is the profiled denoise
> > set to less than default strength. But as you can
> > see there still remain far more chroma noise than in
> > the Lt case.
> >
> >
> > Link to altered RAW
> > image:
> > https://dl.dropboxusercontent.com/u/9454436/sony_noise/raw_altered.jpg
> >
> >
> >
> > Because I've got to that point I didn't know what
> > to do more, I profiled my camera. But even though my
> > profile seems to me to be a bit better than the one
> > packed with dt, it produces no visible difference
> > here.
> >
> >
> > I would like to ask all of you experienced in
> > fighting the high ISO noise for your experiences and
> > recommendations. It would be great to get to know
> > that the problem is in between the chair and the
> > keyboard, not in the excellent dt tool!:-)
> >
> >
> > If someone is interested, the original RAW image can
> > be found
> > here:
> > https://dl.dropboxusercontent.com/u/9454436/sony_noise/DSC09533.ARW
> >
> >
> >
> >
> > Thank you in advance for any reply!
> >
> >
> > Suni
> >
> >
> >
> > ------------------------------------------------------------------------------
> > Try New Relic Now & We'll Send You this Cool Shirt
> > New Relic is the only SaaS-based application
> > performance monitoring service
> > that delivers powerful full stack analytics.
> > Optimize and monitor your
> > browser, app, & servers with just a few lines of
> > code. Try New Relic
> > and get this awesome Nerd Life shirt!
> > http://p.sf.net/sfu/newrelic_d2d_may
> > _______________________________________________
> > Darktable-users mailing list
> > [email protected]
> > https://lists.sourceforge.net/lists/listinfo/darktable-users
> >
> >
> >
> >
> >
> > ------------------------------------------------------------------------------
> > Try New Relic Now & We'll Send You this Cool Shirt
> > New Relic is the only SaaS-based application performance
> > monitoring service
> > that delivers powerful full stack analytics. Optimize and
> > monitor your
> > browser, app, & servers with just a few lines of code. Try
> > New Relic
> > and get this awesome Nerd Life shirt!
> > http://p.sf.net/sfu/newrelic_d2d_may
> > _______________________________________________
> > Darktable-users mailing list
> > [email protected]
> > https://lists.sourceforge.net/lists/listinfo/darktable-users
> >
> >
> >
> ------------------------------------------------------------------------------
> Try New Relic Now & We'll Send You this Cool Shirt
> New Relic is the only SaaS-based application performance monitoring service
> that delivers powerful full stack analytics. Optimize and monitor your
> browser, app, & servers with just a few lines of code. Try New Relic
> and get this awesome Nerd Life shirt! http://p.sf.net/sfu/newrelic_d2d_may
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> https://lists.sourceforge.net/lists/listinfo/darktable-users
------------------------------------------------------------------------------
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New Relic is the only SaaS-based application performance monitoring service
that delivers powerful full stack analytics. Optimize and monitor your
browser, app, & servers with just a few lines of code. Try New Relic
and get this awesome Nerd Life shirt! http://p.sf.net/sfu/newrelic_d2d_may
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