Crypto-protection of human images in the CCTV video stream

Many people are frightened by the thought that they are constantly monitored by hundreds of surveillance cameras. But what to do is the reality of today. In fact, in the central part of modern megacities a person does not disappear for a second from their sight. At the same time, the police are introducing face recognition technology and making a centralized control system for these cameras, so that they will be able to automatically “transfer” the object of observation to each other, tracking for hours the movement of a certain person around the city.

How to prevent the creation of a police state with this development of technology? It seems that this is impossible. However, the wedge wedge knock out. In a sense, we can use other technologies to protect against technology.

For example, 3VR , which develops global video surveillance systems for cities, is trying to present the privacy function as a competitive advantage of its commercial products. They presented the cryptographic protection technology of the video stream, where the images of people are encrypted with secret keys and visually transformed into unrecognizable masks, as in the photo above. Each person has his own individual mask, because the system first recognizes faces, and then assigns each one a separate key.
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The key for "decoding" a particular person is given only to the competent authorities, if necessary. Thus, the police can track specific suspects, but the rest of the people in the frame remain "invisible."

via New Scientist