Webcam + sunshine + time = 3D model of your world

Newscientist: WANT a detailed three-dimensional model of your house or back garden? Just stick up a webcam and wait. Current 3D models of outdoor places, such as those seen in Google Earth, are typically created using laser scans or painstaking manual measurements. But anyone may soon be able to make one - using just daylight, time and a humble webcam.

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