Proceedings Eurographics/IEEE VGTC Symposium Point-Based Graphics (2005)
Stony Brook, NY, USA
June 20, 2005 to June 21, 2005
F. Sadlo , Dept. of Comput. Sci., Swiss Fed. Inst. of Technol., Zurich, Switzerland
T. Weyrich , Dept. of Comput. Sci., Swiss Fed. Inst. of Technol., Zurich, Switzerland
R. Peikert , Dept. of Comput. Sci., Swiss Fed. Inst. of Technol., Zurich, Switzerland
M. Gross , Dept. of Comput. Sci., Swiss Fed. Inst. of Technol., Zurich, Switzerland
We present a simple and high-quality 3D scanning system based on structured light. It uses the common setup of a video projector, a computer-controlled turntable and a single camera. Geometry is acquired using a combination of gray code and phase-shift projections, and it is stored and processed in a point-based representation. We achieve high accuracy by careful calibration of camera, projector, and turntable axis. In addition, we make use of the projector's calibration and extend it to a calibrated light source, allowing for a simple reconstruction of material properties for each surface point. We alternatively use a Lambertian reflectance model, or fit a Phong reflectance model to the samples under different turntable orientations. The acquisition pipeline is entirely point-based, avoiding the need of triangulation during all processing stages.
image texture, 3D scanning system, structured light acquisition system, point-based geometry, camera calibration, projector calibration, turntable axis, Lambertian reflectance model, Phong reflectance model, image processing, computer vision
R. Peikert, T. Weyrich, F. Sadlo and M. Gross, "A practical structured light acquisition system for point-based geometry and texture," Point-Based Graphics 2005(PBG), Stony Brook, NY, USA, 2005, pp. 89-145.