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New device can scan your face in 3D from hundreds of metres away
A lidar scanner has a resolution so high it can image ridges and indentations of only 1 millimetre on objects hundreds of metres away – and capture objects as distant as 1 kilometre
Aongus McCarthy at Heriot-Watt University in Scotland and his colleagues built a device that can create detailed three-dimensional images, including ridges and indentations as small as 1 millimetre, from hundreds of metres away. To enable it to distinguish single particles of light, the researchers used a light-detecting sensor based on an incredibly thin piece of superconducting wire, a component that isn’t common in lidar. Feihu Xu at the University of Science and Technology of China, whose team previously used lidar for imaging from 200 kilometres away, says that McCarthy and his colleagues achieved “remarkable results” when it comes to the depth resolution of their device.
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