Calibration method for structured light based panoramic sensor with planar mirror

Author(s):  
Peng Wang ◽  
Jing Xu ◽  
Ken Chen ◽  
Guanglie Zhang
2021 ◽  
Vol 21 (2) ◽  
pp. 1799-1808
Author(s):  
Guijin Wang ◽  
Chenchen Feng ◽  
Xiaowei Hu ◽  
Huazhong Yang

2022 ◽  
Vol 12 (2) ◽  
pp. 588
Author(s):  
Jun Wang ◽  
Xuexing Li

Single circular targets are widely used as calibration objects during line-structured light three-dimensional (3D) measurements because they are versatile and easy to manufacture. This paper proposes a new calibration method for line-structured light 3D measurements based on a single circular target. First, the target is placed in several positions and illuminated by a light beam emitted from a laser projector. A camera captures the resulting images and extracts an elliptic fitting profile of the target and the laser stripe. Second, an elliptical cone equation defined by the elliptic fitting profile and optical center of the camera is established based on the projective geometry. By combining the obtained elliptical cone and the known diameter of the circular target, two possible positions and orientations of the circular target are determined and two groups of 3D intersection points between the light plane and the circular target are identified. Finally, the correct group of 3D intersection points is filtered and the light plane is progressively fitted. The accuracy and effectiveness of the proposed method are verified both theoretically and experimentally. The obtained results indicate that a calibration accuracy of 0.05 mm can be achieved for an 80 mm × 80 mm planar target.


2021 ◽  
Vol 58 (2) ◽  
pp. 0212001
Author(s):  
翟鹏 Zhai Peng ◽  
崔海华 Cui Haihua ◽  
胡广露 Hu Guanglu ◽  
张益华 Zhang Yihua ◽  
靳宇婷 Jin Yuting ◽  
...  

2009 ◽  
Vol 29 (11) ◽  
pp. 3124-3128 ◽  
Author(s):  
刘震 Liu Zhen ◽  
张广军 Zhang Guangjun ◽  
魏振忠 Wei Zhenzhong ◽  
江洁 Jiang Jie

2015 ◽  
Vol 35 (1) ◽  
pp. 0112004 ◽  
Author(s):  
陈天飞 Chen Tianfei ◽  
赵吉宾 Zhao Jibin ◽  
吴翔 Wu Xiang

Author(s):  
Fangkai Xu ◽  
Shengli Fan ◽  
Qingqing Yang ◽  
Chang Zhang ◽  
Yigang Wang

2013 ◽  
Vol 662 ◽  
pp. 777-780
Author(s):  
Wen Guo Li ◽  
Shao Jun Duan

We present a convenient calibration method for structured light projection system. The proposed clibration approach can realize 3D shape measurement without projector calibration, without system calibration, without precise linear z stage to be used, the relative position between camera and projector can be arbitrary, and the only involved device is a plane board. Experiment results validated that the accuracy of the proposed approach.


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