Infrared and Laser Engineering, Volume. 45, Issue 11, 1117002(2016)
Large-scale 3D coordinate measurement based on orthogonal cylindrical imaging cameras
A large-scale 3D coordinate measurement method based on orthogonal cylindrical imaging cameras was proposed. The camera was consisted of one orthogonal cylindrical imaging system and two orthogonal linear CCDs, which were used to detect the horizontal angle and vertical angle of a measurement point, respectively. One camera determined two angles, therefore, the 3D coordinate of the measurement point can be measured by the intersection of two cameras. The proposed method has prominent advantages in precise coordinate measurement and especially in dynamic position-tracking. A flexible intrinsic parameters calibration method was used to calibrate the orthogonal cylindrical imaging cameras. After intrinsic parameters calibration, the average of angle measurement error in the horizontal and vertical direction of the camera is 1.85″ and 2.16″, respectively. In addition, the extrinsic parameters calibration of the two cameras is also introduced. After extrinsic parameters calibration, the coordinate measurement accuracy of the system is better than 0.52 mm. The experimental results show that the proposed 3D coordinate measurement method is valid with good measurement accuracy.
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Liu Haiqing, Yang Linghui, Ren Yongjie, Zhu Jigui. Large-scale 3D coordinate measurement based on orthogonal cylindrical imaging cameras[J]. Infrared and Laser Engineering, 2016, 45(11): 1117002
Category: 光电测量
Received: Mar. 5, 2016
Accepted: Apr. 15, 2016
Published Online: Jan. 20, 2017
The Author Email: Haiqing Liu (liuhaiqing@tju.edu.cn)