New device can scan your face in 3D from hundreds of metres away

325 meters, your eyes can probably separate a person’s head from the body – and not many others. But a new laser device can cause a three-dimensional model of the face.

Aongos McCarthy Scottish and his colleagues built a device that can cause specific figures in three-dimensional, from three millimeters, have been a small depth of hundreds of meters. Uses image technique Lidar calledIssuing Laser Light Pulses Those who collide with objects, then reflect the device. Considering how long each pulse is due, it can determine the shape of the LIDAR object.

To reach this level of detail, the group had to carefully calibrate and align, McCarthy, such as small parts that correct laser pulses within the device. Enable to distinguish single light particles, the researchers used the sensor to detect lightly, based on a very thin Supercool chairA non-common component in Lidar. Filter sunlight It was another challenge in entering the detector and the image could be degraded.

Researchers tested their LIDAR system in a roof near the lab, making a three-dimensional image of a group member 45 and 325 meters. On a smaller scale, Lego figurines were captured from 32 meters away.

In another test, they represented the segment of a communication tower that was one kilometer. “It was a very tough test.

Feihu Xu In Chinese Science and Technology University, he used previously used Lidar images 200 milessays McCarthy and his colleagues achieved “significant results” in terms of the deep resolution of the device. “It’s the best so far,” he said.

Lidar is considering more importance to modern technology, says Vivek Goyal At Boston University of Massachusetts. He says that the three-dimensional maps of the area can be created Autonomous vehicles as well as Some robots – But the new device should be smaller and denser before using it.