Masks - Can't seem to get it right

[AceMcHammer]

(08-14-2025, 12:04 PM)denzjos Wrote: That should be the clut:

Unzip the file (and remember where you unzipped the file).  
Then use G'Mic-Qt

Thanks man!  That's great!

We're on to something now.  However I applied the clut (ship.cube) and it came out like this..  I assume it came out like this because I applied the clut to my un-cropped (and high res) image. The size ratio of the two images are different...

this image is scaled down for posting here but you can see it's got problems...

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(08-14-2025, 07:13 AM)Ofnuts Wrote: Yes, GMIC is a bit fiddly. You can tell it to use All layers, but first and foremost, you need to have two identical image that only differ by the colors. And the images you show haven't even got the sale size. So your first task is to use the Unified Transform tool to make them overlap, and then crop the image to some common part. Then you can use GMIC, asking it to create a new layer, and it will create this:



As a test, reapply the CLUT to the first image, and you get this:

Dude, that is practically on the money.  All I gotta do is figure out how to get the clut applied properly to my uncropped high res image.  I thought about creating extra canvas space to the preferred (but cropped) image to match the ratio size of my uncropped image but all that would do is add two giant bars worth of white to the clut.

(08-14-2025, 07:25 AM)rich2005 Wrote:

(08-13-2025, 11:55 PM)AceMcHammer Wrote: ried the CLUT filter (Colors/CLUT before - after layers) and so it says that I need to layers to run the filter.  So I just simply duplicated the layer which gave me two layers but the filter still wouldn't run.  All I'm trying to do is make a color look up table of my preferred image and apply it to my uncropped high res image  

A bit more about the gmic cubic look-up table (CLUT)  filter



As it states you need two images one before and one after. Unfortunately your small before / after images you posted are not geometrically identical, so you will have to do a bit of image matching.  Once you have done that and using gmic

(1) The two layers
(2) CLUT from before after
(3) Set the output mode
(4) Give the generated CLUT a name
(5) Set input layers to All

Ok that and it makes the CLUT

Now in your large image and gmic
(6) Apply External CLUT
(7) Find the CLUT just created
(8) Always a good idea to output a new file, just in case you screwed up.

Thanks man.  Those details are extremely helpful