3-D modelling is maturing fast.
Increasingly affordable solutions are not only raising general awareness of 3D workflows but revolutionizing design, engineering and manufacturing processes. The case in point is German-based David-laserscanner – a system that lets users turn everyday objects into 3D models at a low cost.
David-laserscanner currently offers two types of scanning units. The first uses a laser pen, (usually but not exclusively) a web camera, and a back board setup with known points on each facade. The points appear behind the object and are recognized by the software as part of the scanning process.
The second system uses the same type of camera (with plain board used for calibration only) and a projector, which projects a pattern on the surface of the object scanned. It is this process – known as structured light scanning – which enables the software to recognize the shape of the surface via the pattern projected on it. The iPhone app, Trimensional – a development stemming from Georgia Institute of Technology – uses the same principle in its 3D workflow.
The David Start Kit can scan objects 10 mm – 400 mm (0.4″ – 15.7″) in size to a known accuracy of 0.5 percent in 40 seconds. David SLS -1 can scan slightly bigger objects,10 mm – 600 mm (0.4″ – 23.6″), to a known accuracy of 0.2 percent in 2 – 4 seconds. Custom built systems allow for the capture of larger objects.
via Gizmag – Adam P. Spring
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