Location: Home >> Hand-eye Calibration Method of Articulated Arm and Linear Structured Light 3D Camera Based on the Plane
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The articulated arm is widely used in the 3D measurement areas. It can bring non-contract and tactile measurement by fixing the linear structured light 3D camera at the end of the articulated arm. However, the traditional hand-eye calibration methods are complexed and not suitable for the system combined the articulated arm with linear structured light 3D camera. In order to solve the hand-eye calibration problem, we use a fixed calibrated plane as calibration object to find the relationship between the linear structured light 3D camera and the coordinate system of the articulated arm, that is, the rotation and the translation matrix . In this approach, by using the contact measurement function of the measuring arm, the 3D coordinates of points on the fixed calibration plane are measured to obtain the fixed calibration plane equation under the basic coordinates of the measuring arm, and the parameters of the equation are taken as the true values of the fixed calibration plane. Then the linear structured light 3D camera projects linear fringes to different areas of the fixed calibration plane from different angles such as front and sides, and takes pictures of the fringes with 2D cameras to calculate the 3D space coordinates of each point on the fringes. The space position and attitude are solved by using the constraints of these 3D space coordinates in the plane equation. By using the proposed calibration method, the accuracy of 0.05mm is obtained in measuring standard diameter metal spheres, and the experimental results verify the effectiveness of the proposed method.
 AC.Lin, and H.C. Chang. “Automatic 3D measuring system for optical scanning of axial fan blades,” Int J Adv Manuf Technol, vol.E57, pp.701–717, 2011.
 Q.Mei, J.Gao, H.Lin, Y.Chen, Y.He, W.Wang, G.Zhang, and X.Chen. “Structure light telecentric stereoscopic vision 3D measurement system based on Scheimpflug condition,” Optics and Lasers in Engineering, vol.E86, pp.83-91, 2016.
 Y.C.Zhang, J.X.Han, X.B.Fu, and H.B.Lin. “An online measurement method based on line laser scanning for large forgings,” The International Journal of Advanced Manufacturing Technology,vol.E70, pp.439–448, 2014.
 Z.X.Dong, X.W.Sun, W.J.Liu, and H.R.Yang. “Measurement of free-form curved surfaces using laser triangulation,” Sensors, vol.E18: 3527, 2018.
 W.C. Chang, and C.H. Wu. “Eye-in-hand vision based roboticbin picking with active laser projection,” Int J Adv Manuf Technol. vol.E85, pp.2873–2885, 2016.
 R.W.Zhang, W.Liu, W.K.Lu, Y.Zhang, and Z.Y.Jia. “Local high precision 3D measurement based on line laser measuring instrument,” Young Scientists Forum. Young Scientists Forum, 2018.
 K.H. Choi, B.R.Song, and Y.B.Yoo, “A laser scan-based system to measure three dimensional conformation and volume of tissue-engineered constructs,” Tissue Engineering and Regenerative Medicine, vol.E10, no.006,pp.371-379, 2013.
 K. Huang. “Research on the Key Technique of Flexible Articulated Arm Coordinate Measuring System,” Huazhong University of Science and Technology, 5, 2010.
 Y. J. Ren, S. B. Yin, and J. G. Zhu. “Calibration technology in application of robot-laser scanning system,” Opt. Eng., vol. E51, no. 11, pp:20-26, 2012.
 H. Xie, C.T. Pang, W.L.Li, Y.H.Li, and Z.P.Yin. “Hand-eye Calibration and Its Accuracy Analysis in Robotic Grinding.” IEEE International Conference on Automation Science and Engineering (CASE), Aug 24-28, 2015.
 W.L.Li, H.Xie, G.Zhang, S.J.Yan, and Z.P.Yin. “Hand–Eye Calibration in Visually-Guided Robot Grinding,” IEEE transac-tions on cybernetics , vol. E46, no:11, pp.2634-2642, 2016.
 X.H.Xu. “Research on the Key Technology of Robotic Abrasive Belt Grinding of Compressor Blade,” 2019, 5
 S.Y. Li. “Study of Shaft Diameter Measurement Algorithm Based on Line-structured Light Vision,” 2016.
Dayong Tai, Zhixiong Wu, Ying Yang, Cunwei Lu. Hand-eye Calibration Method of Articulated Arm and Linear Structured Light 3D Camera Based on the Plane. OA Journal of Engineering & Technology, 2022, 1(2), 33-44.