Blizzard developed a special version of the client just for Deepmind, so no, they never had to process images. Because of that they have a problem with invisib

Blizzard developed a special version of the client just for Deepmind, so no, they never had to process images. Because of that they have a problem with invisible and burrowed units - human players can miss the shimmer/shadow because it's barely visible, but their AI sees it every time. I think they gave up on simulating this stochastic human behavior. Still, the game is complex enough that the fact that they can play it at a professional level might as well be a miracle.