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Which Face Is Real: How deepfake detection service works

Today you can verify a photo or find an owner of an image in a matter of minutes. All thanks to search services. But what if this image is unique and was created by artificial intelligence? Of course, in this case Google is helpless. But you can learn to spot such images on your own, Molfar notes. The agency offers to practice the skills of recognizing machine-generated faces with the help of the service Which Face Is RealAIN.Capital explains how it works.

About the service

Which Face Is Real is an online service offering users to guess which of the two proposed photos is real and which is generated by artificial intelligence.

As the developers note, the service is based on StyleGAN, an algorithm developed by the Nvidia team. It pits two neural networks — one creates deepfakes, and the other tries to determine the fake. In this way, they learn from each other.

Which Face Is Real also posts a couple of images: a photo from the FFHQ collection and a synthetic one created by StyleGAN. In this way, users can learn to distinguish authentic pics on their own.

Image: Which Face Is Real

How to spot a deepfake

The site’s authors determine some of the common problems in a special section of the service. For example, one of the distinguishing features of the StyleGAN algorithm is that it usually creates shiny blobs that look like water spots on old photos. They can appear anywhere in the image, but often they show up at the interface between the hair and the background.

Besides, it is extremely difficult for a neural network to render hair realistically. Sometimes strands can be disconnected on the face or elsewhere. Also, artificial Intelligence can depict some parts of the hair with a watercolor effect.

It is also very difficult for algorithms to generate realistic eyeglasses. A common problem is an asymmetry: often, the frame will have one style at the left and another at the right. In other cases, it will simply be jagged. In addition to the eyeglasses, you should pay attention to the asymmetries of facial hair, blurred accessories (such as earrings), and the different shapes of collar or fabric on the left and right sides.

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