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http://dx.doi.org/10.7315/CADCAM.2012.156

Development of a Real-time 3D Intraoral Scanner Based on Fringe-Projection Technique  

Ullah, Furqan (Dept. of Mechanical Engineering, Myongji University)
Lee, Gunn-Soo (Dept. of Mechanical Engineering, Myongji University)
Park, Kang (Dept. of Mechanical Engineering, Myongji University)
Publication Information
Korean Journal of Computational Design and Engineering / v.17, no.3, 2012 , pp. 156-163 More about this Journal
Abstract
Real-time three-dimensional shape measurement is becoming increasingly important in various fields, including medical sciences, high-technology industry, and microscale measurements. However, there are not so many 3D profile tools specially designed for specifically narrow space, for example, to scan the tooth shape of a human jaw. In this paper, a real-time 3D intraoral scanner is proposed for the measurement of tooth profile in the mouth cavity. The proposed system comprises a laser diode beam, a micro charge-coupled device, a graticule, a piezoelectric transducer, a set of optical lenses, and a polhemus device sensor. The phase-shifting technique is used along with an accurate calibration method for the measurement of the tooth profile. Experimental and theoretical inspection of the phase-to-coordinate relation is presented. In addition, a nonlinear system model is developed for collimating illumination that gives the more accurate mathematical representation of the system, thus improves the shape measurement accuracy. Experiment results are presented to verify the feasibility and performance of the developed system. The experimental results indicate that overall measurement error accuracy can be controlled within 0.4 mm with a variability of ${\pm}0.01$.
Keywords
Calibration; Camera-laser scanner; Virtual fringe-projection setup;
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  • Reference
1 Gorthi, S. S. and Rastogi, P., 2010, Fringe Projection Techniques: Whither We Are?, Opt. Lasers Eng., 48, pp. 133-140.   DOI   ScienceOn
2 Mark L. Kimber, 2004, Development of a Virtually Calibrated Projection Moire Interferometry Technique Capable of Inaccessible Surface Measurements.
3 Huntley, J. M., 2000, Optical Shape Measurement Technology - Past, Present, and Future, Proc. SPIE 4076, pp. 162-173.
4 Zhang, S., 2010, Recent Progresses on Realtime 3D Shape Measurement Using Digital Fringe Projection Techniques, Opt. Lasers Eng., 48, pp. 149-158.   DOI   ScienceOn
5 Rusinkiewicz, S., Hall-Holt, O. and Levoy, M., 2002, Realtime 3D Model Acquisition, In Proceedings of Siggraph, pp. 438-446.
6 Huang, P.S., Zhang, C. and Chiang, F. 2003, High-speed 3-D Shape Measurement Based on Digital Fringe Projection, Opt. Eng. 42(1), pp. 163-168.   DOI   ScienceOn
7 Malacara, D., Servin, M. and Malacara, Z., 2005, Interferogram Analysis for Optical Testing. Second Edition. Taylor & Francis Group.
8 Greivenkamp, J.E. and Bruning, J.H., 2007, Phase Shifting Interferometry. In Malacara D (Ed.): Optical Shop Testing, Third Edition. pp. 547-655, John Wiley.