GauGAN is a neural network architecture from NVIDIA that can create realistic images from semantic maps (and nowadays also textual descriptions).
As you know, GauGAN is the following (from this post):
GauGAN was a Microsoft Paint-style platform that let uses create landscape images, with the model then able to turn them into photorealistic images.
So, it is a generative adversarial network (GAN) to create images. As it works like an artist, its authors named it GauGAN after "Paul Gauguin" who was a French Post-Impressionist artist (refer into this post).