Detectable pattern in thispersondoesnotexist images

I’ve been amused by thispersondoesnotexist for years; it (StyleGAN2) can generate (relatively) photo-realistic images of faces of people who, well, do not exist. There is a lot to discuss about this, but for now, I’d like to point out an easy way to detect if a photo was generated by it. It’s actually quite obvious once you see it. I noticed it by accident a while back when I was scrolling through a folder of images from the site and saw something unusual. See if you can notice it.

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One thought to “Detectable pattern in thispersondoesnotexist images”

  1. It truly was serendipity that I noticed this. I had a folder full of images saved from thispersondoesnotexist and I was scrolling through it, and the window just happened to be the right height so that when I was scrolling, the files remained stationary-ish on screen and only the contents of the thumbnails changed, they didn’t move around on screen. That’s when I noticed the eyes were not moving. So I threw them all into an animated-gif maker and converted it to an MP4 video.

    Of course, AI has come a long way since StyleGAN2, but it looks like some generators still have this issue of feature–position-fixing when generating multiple images, so it’s still useful for detecting AI-generated images.

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