A new improvement fixes previous artifacts issue

Since Deepfakes came out, a revolution has started in the face generation field. Apps like FaceApp amazed and scared the world for their realism in radically changing facial features: aging, switching gender, etc. However, although the results are outstanding, this technology is not flawless, the pictures often contain some artifacts in certain areas, especially if the background is not uniform.

Some other companies like NVIDIA instead, are developing face generator algorithms able to create realistic faces that do not exist but are still indistinguishable from a real person.

NVIDIA has been trying to make the perfect face generator since 2018 but if you looked at some animations details generated with their neural network, you could see some artifacts, although the images reached a higher resolution than before.

The neural network used is called GAN (Generative Adversarial Network) that works with two networks: one generative which generates candidates and one discriminative which evaluates them. The GAN is based on indirect training through the discriminative network which increases its error rate through the generative network. This enables the model to learn in an unsupervised manner through competition between networks.

In 2019 NVIDIA released a new version of its GAN called styleGAN2 able to generate not only faces but almost anything including the capability to recognize whether a picture is real or generated by an A.I.

Although the unreal faces looked amazing and realistic, they suffered from a “texture sticking” issue during animation wherein some elements of the face such as hairs, wrinkles, etc. appeared to be glued to the screen while the face moves.

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A new version of the GAN, an Alias_Free GAN fixed the issue making the animation more realistic.

We are reaching a new level of realism where fake faces are gradually being able to be animated. Soon, we will be able to perfectly track our movements with a totally new fake but convincing face and maybe with a new fake voice, too.