01-23-2018, 03:17 PM
What Akkana is mentioning is the "pixel region" thing I alluded to in post #9 of this thread. Not sure it helps you here because it is just a raw interface to the layer data, which is *copied* to the Python variable, so if you use Gimp calls to update the layer, you may have to extract it again, or update the array all by yourself, so the final result may not be that much faster.
PS; Post you test image, so that I can try my fixes
PS; Post you test image, so that I can try my fixes