Over discord, some one asked how to align images. I find that interesting because I don’t know how to align two images (astronomy, or even mosaic effect). How would I align a image to fit another image with least amount of error?
There are zillions different methods for image alignment in the litterature.
You have first to determine if the alignment is “rigid” or not, limited to shifts / rotations / scaling / etc…
Depending on your constraints, there are several ways to handle this in G’MIC.
Commands register_nonrigid and register_rigid may be a good start.
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For @reptorian’s information, it works in the GIMP’s G’MIC plug-in filter GUI too.
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