ISSN : 1796-2048
Volume : 1    Issue : 7    Date : November/December 2006

Low-Cost 3D Scanning by Exploiting Virtual Image Symmetries
Carlo Colombo, Dario Comanducci, and Alberto Del Bimbo
Page(s): 71-76
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We present a low-cost, hybrid active/passive 3D scanning system based on an off-the-shelf
camera, a laser stripe illuminator and a turntable. The system combines the good accuracy of active
triangulation approaches with the flexibility of self-calibration based approaches. System operation
is based on the construction of a single view of a virtual surface of revolution, from which camera
calibration (both intrinsic and extrinsic parameters) is performed by exploiting the same object
being scanned. Shape acquisition is finally obtained by laser profile reconstruction and collation.
Experiments with both synthetic and real data are shown, providing an insight into both camera
calibration and shape reconstruction performance.

Index Terms
3D scanners, camera calibration, shape reconstruction, projective symmetry