Hello folks,

I've been working recently on some advanced techniques for doing color transfer between two images.
And today, I've make a working version of the filter available in the G'MIC plug-in for GIMP.
This filter is able to estimate a non-trivial color transformation so that the colors of your input image looks like the color of a reference image that you put as the bottom layer.
So, it avoids manually tweaking the color curves to make an image looks like another one.

Here is how the filter looks like, after a filter update :



Here, I have two layers, the bottom is the reference image, i.e. the image of the leaf you see as a thumbnail at the bottom-left on the preview.
The top layer is the image of the purple flower. The filter automatically find the color transformation to make it look as the white flower on the right.

Here are two examples I've done to illustrate what this filter is capable of :





And I've recorder a quick video to show how this works for real



Note that the algorithm used is definitely not trivial, and this is still an experimental work, which means that the filter can be unstable and eat a big amount of RAM.
You are warned But so far, it appears to work quite well. Please, if you want to test, post your results here.
I'm interested by any feedback about this particular filter.

my first attempt

source image :


image from which take the colours :


resulting image : (very nice!)

Ha nice one dinasset. So one application of this would be to make a landscape looks like it has been shot in another moment of the day

yes, David! a very interesting filter! thanks...

a similar attempt

from:


through:


got this one:

but in this case I got not nice results, both transmuting the colours in one direction and in the other one

sources:


outcomes (in one, then in the other direction):


should I change some parameter?

I tried also to modify the parameter "preserve luminance" but both setting 0 and setting 1 I didn't get acceptable results (tried only one direction...)

I remember you created a similar preset many years ago but there were issues and you said you would re-address them. Is this the result of that effort David? Very cool results that I've seen here. Thanks for the preset.

G'MIC 1.6.1.0, Transfer Colors [simple & advanced]
I have to refresh filters each time to use them, for some reason they are not staying in the menu.
Restarting G'MIC or Gimp doesn't help.

Yup; same for me too Odin. Works great, but afterwards, the preset disappears. I then closed GIMP, went to where the presets were saved, and deleted them all, opened GIMP and refreshed my presets, and low and behold, all is now well. There were two presets that had 1610 in my directory; could have something to do with me running the beta of 1610. These two presets with similar names could have interacted somehow. Now all's well. The old preset name is gimp_update1610.gmic; then new name is update1610.gmic. I suspect if you just delete the old preset name, then all would be well.

Thanks Lyle, getting rid of the old update files did the trick.

List of removed file.
├── .gimp_update1610.gmic
├── .gmic_def.1516
├── .update1602.gmic
├── .update1603.gmic
├── .update1604.gmic
└── .update1610.gmic

I installed G'Mic from http://gmic.eu/gimp.shtml
I says I have 431 available filters.
Couldn't find Transfer color.
So I clicked on the 2 circling arrow to get from internet i assume. and it told me
"Filters update from Internet (partially) failed!
Unable to reach these filters sources:
*http://gmic.eu/gimp_update1620.gmic.

any thoughts

I usually get my updates from sourceforge Tran.

http://sourceforge.net/projects/gmic/fi ... rce=navbar

is there a place where i can set it so that the double arrow circular thing goes and gets it from the link you gave above?

I tried reinstalling from gmic_gimp_win64.exe from the above link and when i click double arrow circular thing it still gives me that error message.

I am confused now.

Link works for me Tran; what OS and browser are you using?

@dinasset : well, your last experiments look quite good to me. In your case, you cannot expect the filter to transfer the color of the flower to the other flower, because your red flower is quite dark, and your 'reference' image contains colors also dark colors that are closer to the dark red than white.

I am on windows 8.1
firefox browser.

The link below is the direct link to all the Windows version Tran. If this link doesn't work, then I don't know what to do for you.

http://sourceforge.net/projects/gmic/files/windows/

That's where i got it from just now.
But the double arrow circular thing still shows the same message.

Thanks for trying anyways.

This should be the direct link to the 64-bit version Tran.

http://gmic.eu/

If that doesn't work, then you should see a blue colored link stating direct link and clicking that usually works for me.