A method for calibrating camera lens distortion with cross-ratio invariability in welding seam system
文献类型：会议论文
| 作者 | Zhao, Guangtao ; Qiao, Hong
|
| 出版日期 | 2008 |
| 会议名称 | 1st International Conference Intelligent Robotics and Applications |
| 会议日期 | OCT 15-17, 2008 |
| 会议地点 | Wuhan, PEOPLES R CHINA |
| 关键词 | camera calibration radial distortion decentering distortion cross-ratio invariability wide-angle lens |
| 通讯作者 | Qiao, Hong |
| 英文摘要 | Wide-Angle tenses have broad applications in lots of fields for their larger fields of view. However, image deformation is its main backward. Thus, calibration of distortion parameters of wide-angle lens is an essential procedure for 3D information recovering from 2D images in applications. Based on our 3D welding seam extraction system, we propose a nonlinear calibration method by using calibration grid. This simple method only considers the distortion parameters so that the coupling between internal and external parameters of the camera is avoided. Moreover, it needs only feature point series which satisfy cross-ratio invariability, and need not know the exact position coordinates of the points. The nonlinear optimization is fast since the initial value of the distortion parameters can be obtained with cross-ratio invariability. Experiments show the efficiency and practicality of our method directly. |
| 会议录 | INTELLIGENT ROBOTICS AND APPLICATIONS
 |
| 源URL | [http://ir.ia.ac.cn/handle/173211/12811]  |
| 专题 | 自动化研究所_复杂系统管理与控制国家重点实验室_机器人应用与理论组 |
| 作者单位 | Chinese Acad Sci, Inst Automat |
| 推荐引用方式 GB/T 7714 | Zhao, Guangtao,Qiao, Hong. A method for calibrating camera lens distortion with cross-ratio invariability in welding seam system[C]. 见:1st International Conference Intelligent Robotics and Applications. Wuhan, PEOPLES R CHINA. OCT 15-17, 2008. |
入库方式： OAI收割
来源：自动化研究所
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