The power of machine learning

I really should be working on other things right now but I'm having a play with some machine learning.

(I've now shrunk the images as you can click on them to see them larger)

This is certainly bigger...

And this is 10x the size...

Small textures...

Four times bigger textures...

And it looks good before...

 But this is promising...

Copper before

Copper after

(In game screenshots taken at 4k)