Hello,
The issue with artefacts in blown highlights when using AMAZE appears to
have gone in release 1.4 (I was using 1.3 before).
Regards,
Colin
On Mon, Dec 23, 2013 at 9:56 AM, Colin Y <[email protected]> wrote:
> Hello,
>
> I have been seeing artefacts on some exported images and reading this
> thread made me realise that they only appear when using AMAZE demosaicing,
> but not with PPG - see sample of 100% crop;
>
> DSC_0717-AMAZE.jpg -
> https://drive.google.com/file/d/0B9klmXRD14TceVVTZUlfeFp3SDQ/edit?usp=sharing
>
> I only see the artefacts with blown highlights. Is this a known issue with
> AMAZE?
>
> Regards,
>
> Colin
>
>
> On Sun, Dec 22, 2013 at 10:26 PM, Rodney Heyd <[email protected]> wrote:
>
>>
>>
>>
>> On Sun, Dec 22, 2013 at 2:48 PM, Tobias Ellinghaus <[email protected]> wrote:
>>
>>> Am Sonntag, 22. Dezember 2013, 14:14:58 schrieb Rodney Heyd:
>>> > Hi,
>>>
>>> Hello,
>>>
>>> > I'm noticing that noise is being introduced into some images I've been
>>> > working on during export from darktable. This is happening on the 1.4
>>> > release candidate built for Fedora 19 (I also had similar results
>>> under v
>>> > 1.3). The output format doesn't seem to matter either, tiff, jpg, png
>>> all
>>> > have the same problem. Any idea what is going on here?
>>> >
>>> > Export parameters are min/max = 0, intent = perceptual, profile =
>>> sRGB, and
>>> > no additional style applied in export.
>>> >
>>> > Here's some sample files:
>>> >
>>> > 100% crop from the exported jpg
>>> > darktable-export-crop.jpg<
>>> https://docs.google.com/file/d/0Bz22rEgDUSPrQjQxZ
>>> > ERWcFRINjg/edit?usp=drive_web>
>>> >
>>> > Screenshot of roughly the same region from within darktable (also at
>>> 100%)
>>> > darktable_screenshot.jpg<
>>> https://docs.google.com/file/d/0Bz22rEgDUSPrWXM5cE
>>> > 1FUEZIWEE/edit?usp=drive_web>
>>> >
>>> > Original raw file:
>>> > 20131124_0289.ORF<
>>> https://docs.google.com/file/d/0Bz22rEgDUSPrdFhRbWhoaWZHd
>>> > G8/edit?usp=drive_web>
>>> >
>>> > Sidecar:
>>> > 20131124_0289.ORF.xmp<
>>> https://docs.google.com/file/d/0Bz22rEgDUSPraFRKcm5vL
>>> > UtVYjQ/edit?usp=drive_web>
>>> >
>>> > Thanks! All help would be greatly appreciated.
>>>
>>> You are using amaze in that image. What is your setting for "demosaicing
>>> for
>>> zoomed out darkroom mode" in the core options of the preferences?
>>>
>>> And does it go away if you use PPG instead of amaze?
>>>
>>>
>>>
>> Ah, that's it! The core option was set to bilinear. If I set it to
>> "full" then the noise appears, but PPG and bilinear seem ok.
>>
>> Thanks!
>>
>> Rod
>>
>>
>>>
>>> Tobias
>>>
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>>
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