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When the first lockdown was eased in June, David Fletcher picked up his digital camera and got to work. Save for a few police officers and builders, he says, London’s streets were deserted.
But that suited him just fine. He wanted to take photographs without people getting in the way. Mr Fletcher takes thousands upon thousands of images of a façade or area and later uses computer software to stitch these images together as a 3D model.
The process is called photogrammetry and while he’s been dabbling in it for many years ... Read even more
