Imagine being able to capture images of objects hidden behind walls without the need for cameras or surveillance equipment. high tech.
Researchers at the University of California have found a revolutionary way to use Wi-Fi to capture images of objects on the other side of walls and structures. This isn't science fiction, it's the incredible reality they presented at the IEEE Radar 2023 Conference.
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The secret behind this revolution lies in Keller's Theory of Geometric Diffraction. This theory states that the end of an object creates a kind of cone of rays when it comes into contact with a wave.
Scientists have brilliantly applied this theory to capture images of stationary objects, even when they are on the other side of a wall.
Based on this theory, the research team was able to map the ends of objects, allowing the Latin alphabet to be read in a surprising way. They created a system that identifies the orientation of the edges of objects using Wi-Fi.
Check out more details of the system in operation:
Using calculations based on Bayesian networks, the system predicts how information about the edge propagates. This advancement significantly improved the quality of captured images, surpassing previous techniques.
Unlike previous methods, which often resulted in poor-quality images due to reflection from surfaces, scientists in this study took an innovative approach.
They used three transmitters WiFi and studied variables, such as the curvature of the surface and the orientation of the ends of objects, to improve the imaging system.
To receive Wi-Fi signals, the researchers used a moving unmanned vehicle as a receiver. The results were impressive, with the ability to identify and classify letters of the Latin alphabet, even when objects were hidden behind walls and obstacles.
This discovery by University of California researchers paves the way for a new era of radiofrequency imaging.
In addition to having exciting applications in fields such as security and technology, this technique promises to transform the way we see and interact with the world. world around us. Imagine what else Wi-Fi could show us in the future. This is just the beginning of a fascinating journey.
