| Author Name | Affiliation | | Ju Huo | Dept.of Electrical Engineering, Harbin Institute of Technology, Harbin 150001, China | | Wen-Bo Dong | Dept.of Electrical Engineering, Harbin Institute of Technology, Harbin 150001, China | | Ning Yang | Control and Simulation Center, Harbin Institute of Technology, Harbin 150080, China | | Wu-Kang Lin | Control and Simulation Center, Harbin Institute of Technology, Harbin 150080, China |
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| Abstract: |
| For high precision calibration of camera with large field-of-view, massive calibration points will be needed if traditional methods are selected, which makes the calibration complex and time-consuming. In order to solve this problem, a calibration method based on flexible planar target is proposed. In this method, distortion factor is firstly acquired by the invariance of cross ratio, and existing feature points are adjusted with the distortion factor. Then, a large number of points that will be used for the calibration are constructed with the adjusted feature points. Simultaneously, Tsai method is modified so as to reduce the complexity of calibration, which makes the process linear. The simulation and real experiments show that the method proposed in this paper is simple, linear, accurate and robust, and the precision of this method is close to that of Tsai method using abundant points. The method can satisfy the requirement of high precision calibration for camera with large field-of-view. |
| Key words: large field-of-view calibration distortion factor flexible planar target linear two-step method |
| DOI：10.11916/j.issn.1005-9113.2013.04.003 |
| Clc Number:TP391 |
| Fund: |
