I see no technical reason this cannot be done using image processing (e.g. a Photoshop filter), robotics and/or 3D printing. In Japan, I watched a robot paint

I see no technical reason this cannot be done using image processing (e.g. a Photoshop filter), robotics and/or 3D printing. In Japan, I watched a robot paint portraits of live models. A person would sit on a bench, the robot would look at him, then dip a traditional horsehair brush in black ink and paint on paper on an easel. It was outline brushwork with different pressures creating variations in line thickness. The result was quite good--very clearly the live model in front of us. This was in Tsukuba "Science City"... 32 years ago.