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Bug #11576

Profiled denoise results are very different between preview and exported image

Added by Sarge Borsch about 3 years ago. Updated over 2 years ago.

Status:
New
Priority:
Low
Assignee:
-
Category:
Darkroom
Target version:
-
Start date:
04/15/2017
Due date:
% Done:

0%

Estimated time:
Affected Version:
2.2.4
System:
Mac OS X
bitness:
64-bit
hardware architecture:
amd64/x86

Description

On preview (as seen on screenshot) there's almost no residual noise.
After exporting, lots of noise are visible in exported image, especially in darker areas.

Demosaic method doesn't make any difference (tried ppg and amaze), disabling OpenCL also doesn't change anything.

In this case denoise profile is taken from https://github.com/darktable-org/darktable/pull/1471 — however, I noticed that it doesn't matter which profile is used, the noise reduction in preview is always much stronger than in exported image.

IMG_0130.CR2 (15.7 MB) IMG_0130.CR2 example raw file Sarge Borsch, 04/16/2017 10:39 AM
Screen Shot 2017-04-16 at 10.30.29.png (2.47 MB) Screen Shot 2017-04-16 at 10.30.29.png screenshot Sarge Borsch, 04/16/2017 10:41 AM
IMG_0130.CR2.xmp (10.6 KB) IMG_0130.CR2.xmp conversion settings used Sarge Borsch, 04/16/2017 10:42 AM
IMG_0130.tif (26.4 MB) IMG_0130.tif result of export (tiff 8 bit) Sarge Borsch, 04/16/2017 10:43 AM
IMG_0130.jpg (6.04 MB) IMG_0130.jpg result of export (smaller, but visually similar) Sarge Borsch, 04/16/2017 10:47 AM

History

#1 Updated by Roman Lebedev about 3 years ago

Is opencl disabled? If not, try disabling it.

#2 Updated by Sarge Borsch about 3 years ago

Roman Lebedev wrote:

Is opencl disabled? If not, try disabling it.

As I wrote, I already tried and there's no (visible) difference (I mean, the issue is present as well)

#3 Updated by Sarge Borsch over 2 years ago

FYI, 2.4.0 RC 1 is also affected. Preview image is denoised much more strongly that the export result.
This time unfortunately I can't test it without OpenCL because I only have extremely bad hardware at the moment.

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