Remove Chromatic Aberrations

[silc]

Dear experts,

Do you know if it's possible and if yes, how can I remove chromatic aberrations in GIMP?

Thanks for helping the newbie 

Cheers.

[rich2005]

(10-30-2017, 10:36 AM)silc Wrote: Dear experts,

Do you know if it's possible and if yes, how can I remove chromatic aberrations in GIMP?

Thanks for helping the newbie 

Cheers.

There is a (very) old plugin that you can try, fix-ca

See: http://kcd.sourceforge.net/fix-ca.php for details

The attached zip file contains both 32 bit and 64 bit compiled-for-Windows fix-ca ver. 3.02.
If using Windows 64 bit, use the 64 bit version otherwise use the 32 bit version.

When un-zipped pop the file fix-ca.exe in your Gimp profile C:\Users\your-name\.gimp-2.8\plug-ins

Just tried in a Win7 64 bit and it works there. When installed find it in Filters -> Colors -> Chromatic Aberration

Edit: Otherwise if it is something like a fringing problem try Colours -> Hue & Saturation then reduce the saturation on blue and cyan possibly on a selection to constrain the effect

example https://i.imgur.com/VRkdcss.jpg

[Ofnuts]

Real chromatic aberrations (that show mostly in corners) are best removed by a raw processor (RawTherapee, or else) because it can then occurs before demosaicing (or be taken in account while demosaicing).

As Rich says, purple fringes aren't really chromatic aberrations, and there are other cures.

[silc]

(10-30-2017, 11:02 AM)rich2005 Wrote:

(10-30-2017, 10:36 AM)silc Wrote: Dear experts,

Do you know if it's possible and if yes, how can I remove chromatic aberrations in GIMP?

Thanks for helping the newbie 

Cheers.

There is a (very) old plugin that you can try, fix-ca

See: http://kcd.sourceforge.net/fix-ca.php for details

The attached zip file contains both 32 bit and 64 bit compiled-for-Windows fix-ca ver. 3.02.
If using Windows 64 bit, use the 64 bit version otherwise use the 32 bit version.

When un-zipped pop the file fix-ca.exe in your Gimp profile C:\Users\your-name\.gimp-2.8\plug-ins

Just tried in a Win7 64 bit and it works there. When installed find it in Filters -> Colors -> Chromatic Aberration

Edit: Otherwise if it is something like a fringing problem try Colours -> Hue & Saturation then reduce the saturation on blue and cyan possibly on a selection to constrain the effect

example https://i.imgur.com/VRkdcss.jpg

Thanks!
It already solved and saved a lot of me photos

However, I have one photo where it improves, but does not solve. Perhaps the photo has no salvation....

Cheers.

---

(10-30-2017, 12:47 PM)Ofnuts Wrote: Real chromatic aberrations (that show mostly in corners) are best removed by a raw processor (RawTherapee, or else) because it can then occurs before demosaicing (or be taken in account while demosaicing).

As Rich says, purple fringes aren't really chromatic aberrations, and there are other cures.

Hi Ofnuts,

For one of my photos that GIMP is not helping, I would like to try in Rawtherapee. Could you please explain me how can I do that in Rawtherapee?

Thanks a lot!

Cheers.

[Ofnuts]

Here in the Toolbox:

   

[Zbyma72age]

(10-30-2017, 11:02 AM)bogaty2005 Wrote:

(10-30-2017, 10:36 AM)jedwab Wrote: Drodzy eksperci,

Czy wiecie, czy jest to możliwe i jeśli tak, jak mogę usunąć aberracje chromatyczne w GIMP?

Dzięki za pomoc nowicjuszowi 

. Pozdrawiam.

Jest (bardzo) stara wtyczka, którą możesz wypróbować,  fix-ca

Zobacz: http://kcd.sourceforge.net/fix-ca.php, aby uzyskać więcej szczegółów

Załączony plik zip zawiera zarówno 32-bitową, jak i 64-bitową skompilowaną dla systemu Windows wersję fix-ca  3.02.
Jeśli używasz systemu Windows 64-bitowego, użyj wersji 64-bitowej, w przeciwnym razie użyj wersji 32-bitowej.

Po rozpakowaniu umieść plik fix-ca.exe  w swoim profilu Gimp C:\Users\your-name\.gimp-2.8\plug-ins

Właśnie wypróbowałem w systemie Win7 64-bitowym i tam działa. Po zainstalowaniu znajdź go w Filtrach -> Kolory -> Aberracja chromatyczna

Edytuj: W przeciwnym razie, jeśli jest to coś w rodzaju problemu z obwódką, wypróbuj Kolory -> Odcień i nasycenie, a następnie zmniejsz nasycenie niebieskiego i cyjanu, być może w zaznaczeniu, aby ograniczyć efekt

przykład https://i.imgur.com/VRkdcss.jpg

---

I don't know if I publish well, but I'm a simple bread eater and I have no idea about it.
I have a kind request to compile plugins https://github.com/joescat/gimp-fix-ca and https://github.com/joescat/gimp3-fix-ca/...es/tag/0.1 for gimp windows

[denzjos]

https://github.com/JoesCat/gimp-fix-ca

Also : https://farcrydesign.com/GIMP/PurpleFringe.html


  Darla-PurpleFringe.zip (Size: 1.64 KB / Downloads: 4)

[Zbyma72age]

(01-03-2025, 04:48 PM)denzos Wrote: https://github.com/JoesCat/gimp-fix-ca

Also : https://farcrydesign.com/GIMP/PurpleFringe.html

I have a kind request to compile new versions of Windows plugins

[rich2005]

(01-04-2025, 10:17 AM)Zbyma72age Wrote:

(01-03-2025, 04:48 PM)denzos Wrote: https://github.com/JoesCat/gimp-fix-ca

Also : https://farcrydesign.com/GIMP/PurpleFringe.html

I have a kind request to compile new versions of Windows plugins

You might try http://www.gimpchat.com - you stand more chance there for some kind person compiling the new versions for Windows.

( I just tried for Gimp 3.0 in kubuntu 24.04 linux and the code throws up errors and fails to compile. OK, tried again setting export LDFLAGS="$LDFLAGS -lm" first,
Now compiles with a couple of warnings in kubuntu and Gimp 3.0 To be trueful not much better than the fix-ca filter in the gmic_gimp_qt plugin and that is available for the Windows Gimp 3.0 )

[Zbyma72age]

(01-04-2025, 10:24 AM)bogaty2005 Wrote:

(01-04-2025, 10:17 AM)Zbyma72wiek Wrote:

(01-03-2025, 04:48 PM)Denzo Wrote: https://github.com/JoesCat/gimp-fix-ca

Also : https://farcrydesign.com/GIMP/PurpleFringe.html

I have a kind request to compile new versions of Windows plugins

You might try http://www.gimpchat.com - you stand more chance there for some kind person compiling the new versions for Windows.

( I just tried for Gimp 3.0 in kubuntu 24.04 linux and the code throws up errors and fails to compile.    OK, tried again setting export LDFLAGS="$LDFLAGS -lm" first,
Now compiles with a couple of warnings in kubuntu and Gimp 3.0  To be trueful not much better than the fix-ca filter in the gmic_gimp_qt plugin and that is available for the Windows Gimp 3.0 )

Thank you