This really wouldn’t be that hard to do, CNC machines are essentially step motors on rails holding a tool head. Old (pre-them just being big inkjets) plotters were basically a 2 axis CNC with a tool head that would retrieve, move, lower, raise and replace specially designed pens. My high school had one, a pretty large format one. So you could already pretty trivially have AI gen sketches drawn with actual pens on actual paper if you go find an old plotter, and a CNC painting machine would be about 80% the same thing.
The harder part by far would be building software to convert a JPEG into instructions to paint with and have it look good.
This really wouldn’t be that hard to do, CNC machines are essentially step motors on rails holding a tool head. Old (pre-them just being big inkjets) plotters were basically a 2 axis CNC with a tool head that would retrieve, move, lower, raise and replace specially designed pens. My high school had one, a pretty large format one. So you could already pretty trivially have AI gen sketches drawn with actual pens on actual paper if you go find an old plotter, and a CNC painting machine would be about 80% the same thing.
The harder part by far would be building software to convert a JPEG into instructions to paint with and have it look good.