These user created images are the product of an art technique known as Inceptionism, using neural networks to generate a single mind-bending picture from two source images.
The images are possible thanks to DeepDream software, which finds and enhances patterns in images by a process known as algorithmic pareidolia. It was pioneered by Google and was originally code-named Inception after the film of the same name.
I didn't know anything about Inceptionism and Pareidolia until I bumped into these incredible images on Ostagram...