Facebook is developing a DeepFace face recognition system that can recognize people even in a photo that is far from portrait quality - like those photos that a person got into by chance - how another person could have done it. Only it will be a car.

The head of the artificial intelligence laboratory,
Jan Lekun of New York University, claims that this is done not to interfere with the privacy of users, but to protect it: as soon as Facebook recognizes the face of its user in one of the 400 million photos downloaded daily, he will inform him about this by saying after which the user will be able to block his face in an undesirable photogallery.
In the development of DeepFace, Facebook has its unique advantage: a giant database of already signed photos from the pages of its users. Thus, the project description mentions a selection of SFC (Social Face Classification - a collection of people from the social network), consisting of 4.4 million already signed photos from facebook pages of 4,030 users.
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a source