PAN Hai-hong,WANG Yao-wei,XU Da-bin,et al.Calibration of line-structure light plane using non-specific target[J].Optics and Precision Engineering,2021,29(01):54-60.
PAN Hai-hong,WANG Yao-wei,XU Da-bin,et al.Calibration of line-structure light plane using non-specific target[J].Optics and Precision Engineering,2021,29(01):54-60. DOI: 10.37188/OPE.20212901.0054.
Calibration of line-structure light plane using non-specific target
High-precision calibration of a line-structure light plane can not be achieved if the measurement systems lack a target plane. To address this problem, this paper proposes a line-structure light plane calibration method using non-specific targets; this method is based on the principle of stereo vision and the line-structure light measurement system. First, a non-specialized target is placed on the line-structure light plane, and point clouds formed by projecting line-structure light on the target are acquired using the parallax method. Multiple point clouds are obtained by varying the posture of the non-specific target. The least squares method is then used to perform plane fitting on these collected multiple point cloud sets, and subsequently, the structure light plane parameters are determined to complete plane calibration. A human arm and 304 steel plate were adopted as the targets, and the proposed method was used for the calibration of the line-structure light plane, where these targets were located. Using this calibrated line-structure light plane, the dimensions of five square workpieces were measured. The results indicate that the average measurement accuracy of the proposed calibration method is approximately ±0.056 mm. This proves that the method can be used for calibration, without requiring a special target, while also meeting the accuracy requirements of the measurement system.
关键词
Keywords
references
WANG X Y , ZHU Z M , ZHOU F Q , et al . . Complete calibration of a structured light stripe vision sensor through a single cylindrical target [J]. Optics and Lasers in Engineering , 2020 , 131 : 106096 .
WANG CH M , CHEN L . A field calibration method for line structured light vision measurement [J]. Machine Tool & Hydraulics , 2018 , 46 ( 22 ): 80 - 83 . (in Chinese)
HONG L , TIAN Q L , JI B J . Calibration method for line structured-light parameters based on homography matrix [J]. Acta Photonica Sinica , 2015 , 44 ( 12 ): 113 - 118 . (in Chinese)
NIU M H , SONG K C , WEN X , et al . . The line scan camera calibration based on space rings group [J]. IEEE Access , 2018 , 6 : 23711 - 23721 .
CHEN W L , DONG Q L , LIU F , et al . . Fast calibration method of multiple line structured light and the camera [J]. Infrared Technology , 2017 , 39 ( 1 ): 81 - 85 . (in Chinese)
LIU Z , LI X J , LI F J , et al . . Calibration method for line-structured light vision sensor based on a single ball target [J]. Optics and Lasers in Engineering , 2015 , 69 : 20 - 28 .
WEI Z Z , LI C Q , DING B S . Line structured light vision sensor calibration using parallel straight lines features [J]. Optik , 2014 , 125 ( 17 ): 4990 - 4997 .
XU F K , FAN S L , YANG Q Q , et al .. Welding robotic hand-eye calibration method based on structured light plane [C]. 2019 Chinese Control Conference (CCC). July 27 - 30 , 2019 . Guangzhou, China . IEEE , 2019 : 1496 - 1500 .
WANG Z , FAN J F , JING F S , et al . . An efficient calibration method of line structured light vision sensor in robotic eye-in-hand system [J]. IEEE Sensors Journal , 2020 , 20 ( 11 ): 6200 - 6208 .
LI W G , LI H , ZHANG H . Light plane calibration and accuracy analysis for multi-line structured light vision measurement system [J]. Optik , 2020 , 207 : 163882 .
QIU ZH CH , XIAO J . New calibration method of line structured light vision system and application for vibration measurement and control [J]. Optics and Precision Engineering , 2019 , 27 ( 1 ): 230 - 240 . (in Chinese)
张美静 . 亚像素边缘检测技术研究 [D]. 沈阳 : 沈阳理 工大学 , 2013 .
ZHANG M J . Research on Sub Pixel Edge Detection Technology [D]. Shenyang : Shenyang Ligong University , 2013 . (in Chinese)
Correction of probe alignment error for ZC1 worm gear profile measurement
Related Author
ZHANG Xiangchao
NIU Xingman
HAO Siyuan
LANG Wei
LI Pingfeng
LIU Ruiyang
ZHANG Zonghua
LI Wenjie
Related Institution
College of Mechanical Engineering, Hebei University of Technology
School of Information Science and Technology, Fudan University
Guilin Changhai Development Limited Company
Digital Laser Imaging and Display Engineering Research Center of Ministry of Education
Key Laboratory of Guangxi Manufacturing System and Advanced Manufacturing Technology (School of Mechanical and Electrical Engineering, Guilin University of Electronic Science and Technology )