Computers have recently improved a lot thanks to a somewhat disturbing technique: generating fake human faces. As in, create an image of a human that has never existed before.
We have seen the concept become a bit viral this week with ThisPersonDoesNotExist, a website linked to a machine that generates a new face every few seconds. Or the feline version that makes cats dream (sometimes nightmarish), ThisCatDoesNotExist.
Now, it has been transformed into a game. You think you can say which human is … well, human? (Spoiler: All images used as examples above are, depending on the game, computer generated.)
Well called WhichFaceIsReal, the site throws two images side by side: a real one and a computer generated one. It was developed by two professors from the University of Washington, based on the same work as the sites mentioned above: StyleGAN, an algorithm recently created in open source by a team of Nvidia. This algorithm opposes two neural networks, one trying to generate fake face images, while another network trying to report the fake.
This is not impossible to say what's real, at this point. After playing for a while, you may notice that the computer tends to go wrong. The site's authors even highlight some of the common problems: strange graphic artifacts resembling splashing water, or smiling mouths with too many anterior teeth.
But even if you get 90% of it right off the bat, you have to ask yourself: will you notice the fake it was not deliberately contrasted with a real one? If one of the fakes was just a random photo on an Internet profile, would you take a second look?