GauGAN

Context: AIPainting

The online demo was at, http://gaugan.org/gaugan2/, but has gone. Maybe it's now https://www.nvidia.com/en-us/studio/

NeuralNetwork (more specifically a GenerativeAdversarialNetwork) which was trained with photos and crude MSPaint-style simplifications.

Now you paint a scene, absurdly crudely, and it turns it into something almost photorealistic.

https://rebusfarm.net/news/nvidia-gaugan-2-ai-for-landscape-painting

https://blogs.nvidia.com/blog/gaugan2-ai-art-demo/