The gist of what I'd like to do is to take a set of images of individual continents, each in its own (generally equirectangular oblique) projection, and stitch them together into a single file that could be reprojected at will. Each of the individual continent images is in a known projection and has many known lat / lon coordinates that could be used for referencing, so this seems like something that should be doable, but for the life of me I can't seem to find a way to get it to work. I've tried QGIS, but the georeferencer spits out nonsense when I try to reference my images. Blender might be another option, but I've never worked with that and so I'm not sure if it has the precision to do this. Any thoughts?