Optimal Parameters Selection for 3D-Mechanical Surface Measuring Equipment Based on the Structured Light Gray Code
Main Article Content
Abstract
3D reconstruction techniques of object by using the structured light are widely used in the industry and academia. This method gives some advantages like fast and accurate. The measurement precision of a certain system depends on the geometrical parameters of the system, the characteristics of the surface under test and the specification of devices. In this paper, the effect of some parameters on the resolution of the 3D surface measurement equipment based on Gray code technique, especially the position correlation between the camera and the projector is investigated. Thereby, the paper proposes the selection of optimum parameters for the measurement system. Experimental results determine the optimum conditions for the system at the measuring range (w x h = 400 mm x 300 mm) to obtain the best z-resolution of 0.67 mm.
Keywords
3D measuring devices, coded patterns, structured light, computer vision
Article Details
References
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[2] Q. Zhang, X. Su, L. Xiang, and X. Sun, "3-D shape measurement based on complementary Gray-code light," Opt. Lasers Eng., vol. 50, no. 4, pp. 574-579, 2012.
[3] G. Sansoni, S. Corini, S. Lazzari, R. Rodella, and F. Docchio, "Three-dimensional imaging based on Gray-code light projection: characterization of the measuring algorithm and development of a measuring system for industrial applications.," Appl. Opt., vol. 36, no. 19, pp. 463-472, 1997.
[4] T. Peng and S. K. Gupta, "Algorithms and models for 3D shape measurement using digital fringe projection," Mech. Eng., p. 249, 2006.
[5] H. B. Wu, Y. Chen, M. Y. Wu, C. R. Guan, and X. Y. Yu, "3D Measurement Technology by Structured Light Using Stripe-Edge-Based Gray Code," J. Phys. Conf. Ser., vol. 48, pp. 537-541, 2006.
[6] J. Batlle, E. Mouaddib, and J. Salvi, "Recent progress in coded structured light as a technique to solve the correspondence problem: A Survey," Pattern Recognition, Vol. 31, No. 7, pp. 963-982, 1998.
[7] J. L. Posdamer and M. D. Altschuler, "Surface measurement by space-encoded projected beam systems," Comput. Graph. Image Process., vol. 18, no. 1, pp. 1-17, 1982.
[8] Gupta, Pratibha, "Gray Code Composite Pattern Structured Light Illumination," Univ. Kentucky Master's Theses, p. 438, 2007.
[9] S. Rusinkiewicz, O. H.- Holt, and M. Levoy, "Real- time 3D model acquisition," SIGGRAPH '02 Proc. 29th Annu. Conf. Comput. Graph. Interact. Tech., vol. 21, no. 3, pp. 438-446, 2002.
[10] S. Zhang, High-Speed 3D Imaging with Digital Fringe Projection Techniques, Optical Sciences and Applications of Light, vol. 1. pp. 1-198 Published by CRC Press, 2016.