I would like to apply a specific color curve to some 2000 .tif files. I am a Windows user and so far I have used GIMP for photo editing.
Using Gimp 2.10 I was able to perform such task working on .JPG files using the batch Image Manipulation plug-in (bimp v 2.6; https://alessandrofrancesconi.it/projects/bimp/).
Work flow so far for Jpegs in GIMP-2.10:
- Using I created a color curve working on a jpg file (Colors-> curves).
- once happy with corrections I saved the curve in an external file ("myset") which hasbeen saved in '\User\appData\roaming\gimp\2.10\curves'
- using bimp plug in I choose Add->color correction
- in the new window that pop-up I then select only the checkbox "change the color curv from external file" (or similar, menus are not in english...sorry) and navigate to my "myset" curve file.
- finally run the batch
When I tried to do the same BUT WITH the .tif files, I got warnings of the kind "unknown filed tag encountered" at the step of importing in bimp the images to process.
That said, I can open the individual tif files in Gimp (File -> open...). When I do, I still get the warnings "unknown filed tag encountered", but i can click "OK" on the message window and continue importing the file.
Now the "import TIFF" window show me a "Page 1" icon in the top part, then I can choose if opening the file as "levels" or "image". Both choices seem to give the same result. At that point I can apply my "myset" curve to the file from the tool Colors-> curves.
One potential solution I've been thinking of is to write a script to do this and call it from the command line. I found something along that line here: https://www.gimpusers.com/forums/gimp-user/11100-curves-spline-batch . Unfortunately:
- I have no experience in writing script-fu scripts and very few on command line.
- looking at the example in the above link I cannot figure out how/where to point to the "myset" curve in the script.
- looking into the Procedure Brouser I do not know which is the one corresponding to the Color->curve tool. ( possibly someting like gimp-drawable-curves-splines, but again I dont know how to have that refer to "myset")
A copy of my "myset" curve and a some .tif esample files can be found here.
Dows anyone have suggestion on perform batch curve color changes on these tif files similarly to what I describe for the jpg? I am open to other solution then GIMP (but for example I cannot open those tif in rawtherappe - don't know why - so that is less of an option)
IMPORTANT: the I need to preserve the tiff metadata (they're georeferenced)
