Scientists are looking to develop a simple way to detect a person's presence in an environment, just as we see in films. In some film productions, it is even common for secret agents to use technological equipment to see through walls. What was once a challenge to science now seems entirely possible. A novelty is coming out of the screens!
Technology will see through walls
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Researchers at Carnegie Mellon University and the University of Waterloo, United States, developed new methods that are able to use the Wi-Fi signal to three-dimensionally map people in a living room. The technique makes it possible to identify with great precision the positioning and movements of individuals.
The DensePose system, developed by British researchers that detects pixels in humans through photos, was used as the basis for this new technique. A neural network was then developed. It is capable of mapping human characteristics from Wi-Fi signals.
The model detects all objects, discarding static ones, to create a type of radar. So far, the new system varies in range and accuracy, depending on the type of wall, although it works through plaster, wood and concrete.
possible benefits
In terms of applications, the technology could be used as a substitute for conventional surveillance cameras. This is because its detection capacity and accuracy are superior to those of cameras, especially when environments have low lighting or many obstacles.
It can also serve rescue teams, firefighters and cops.
Project scientists believe that using the signals to see through the wall is a breakthrough important when we talk about privacy, because the operators would not have direct access to the images of the environment.
Another benefit is related to the high availability of the system for the population, considering that the equipment used is easily accessible and all have a reasonable cost.
