News from the front:
The new inpainting algorithm I'm working on keeps improving hours after hours. It is now fully parallelized! The computation time for the example below has been reduced to 12 seconds
only (on a 24-cores machine, which means approx. 2mn with a single-core). At the end, it should be probably faster than the one already available in G'MIC anyway.
However, settings good parameters is still a hard task. And, as the algorithm uses some randomness, running the algorithm twice on the same image will give you two different results. Nothing is perfect, right ? :) I must admit I was too tired last night to go on.
This should be available soon in the G'MIC plug-in for +GIMP