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
From 325 metres away, your eyes can probably distinguish a person’s head from their body – and not much else. But a new laser-based device can create a three-dimensional model of their face.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. It uses an imaging techniquethat collide with objects then reflect back into the device.
To enable it to distinguish single particles of light, the researchers used a light-detecting sensor based on an incredibly thin piece ofThe researchers tested their lidar system on a roof near their lab by taking detailed three-dimensional images of a team member’s head from 45 and 325 metres away. On a smaller scale, they captured Lego figurines from a distance of 32 metres.In another test, they imaged a segment of a communication tower that was a kilometre away.
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