Getting color artifacts in shadows

[Daníel Örn Smárason]

Hi,

I have started noticing in shadows i get very strange color artifacts. It reminds me of "Dead pixle" or "Noise" but is only in the shadows

I have tried alot... I am exporting in 16 bit, Tiff no compression.
Weird thing about this is the stichting photos (Which are made when stitching this picture) do not have this error...

Any idea's?

[Daníel Örn Smárason]

Scrolled a bit down and found a fix for it..

-Expert view
- Stitcher
- Proscessing
- Blender
- enblend
-Option
Write "--blend-colorspace=identity" Without ""

Now is my question, since im so very new to this, After I put this line in, will It always use this command line?
That would be preferred.
Unless there are some downsides to it.

[David W. Jones]

To make it the default for all new projects:

Start Hugin without a project open.

File > Preferences > Programs.

Under "Enblend executable" find "Default Arguments".

Add --blend-colorspace=identity at the end.

Click OK until you're back at the main Hugin screen.

I made it my default a long time ago with no problems.

I have very rarely found color artifacts in very dark areas of panoramas that I output in EXR format and process through LuminanceHDR, but only one of the HDR algorithm's it uses produce them. The artifacts don't appear in 16-bit TIF format, so maybe they come from EXR's 32-bit floating point color depth.

The process below is how you set the colorspace option for a specific project.

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David W. Jones
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[Daníel Örn Smárason]

Thank you!

 Tbh I was about to give up on Hugin, but this changes everything!

[David W. Jones]

Glad to help!

-- 
David W. Jones