| 基于非量测畸变校正的摄像机标定方法 |
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| 引用本文： | 周富强,蔡斐华.基于非量测畸变校正的摄像机标定方法[J].机械工程学报,2009,45(8). |
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| 作者姓名： | 周富强 蔡斐华 |
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| 作者单位： | 北京航空航天大学精密光机电一体化技术教育部重点实验室,北京,100083 |
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| 基金项目： | 国家自然科学基金，教育部新世纪优秀人才支持计划 |
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| 摘 要： | 为了保证镜头畸变系数标定的一致性和简化视觉测量中摄像机的在线标定过程,建立畸变分离的摄像机模型,提出基于非量测畸变校正的摄像机线性标定方法.基于共线点的透视投影不变性,采用大量共线特征点对定焦镜头的畸变参数进行一次标定,摄像机内部参数可以由校正畸变后的特征点进行线性标定.该方法将畸变参数从摄像机模型中分离出来,不需要将畸变参数纳入到摄像机模型中进行多次重复标定.试验结果表明,畸变分离摄像机模型很好地符合了定焦摄像机的成像规律,基于非量测畸变的摄像机参数线性标定方法与传统的非线性优化标定方法的标定精度相当,标定速度提高近3倍,对于简化摄像机标定过程,提高视觉测量的便捷性,拓宽机器视觉的工程应用具有重要意义.
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| 关 键 词： | 摄像机标定 畸变校正 非量测 共线点 |
Camera Calibration Method Based on Non-metric Distortion Correction |
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| ZHOU Fuqiang,CAI Feihua.Camera Calibration Method Based on Non-metric Distortion Correction[J].Chinese Journal of Mechanical Engineering,2009,45(8). |
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| Authors: | ZHOU Fuqiang CAI Feihua |
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| Affiliation: | Key Laboratory of Precision Opto-mechatronics Technology;Ministry of Education;Beihang University;Beijing 100083 |
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| Abstract: | In order to keep consistency of lens distortion parameters calibration and simplify online camera calibration process in vision measurement, a distortion separated camera model is constructed and the linear method for camera calibration based on non-metric distortion correction is proposed.Based on the perspective projection invariance of collinear points, the distortion parameters of fixed-focus-lens are calibrated at one go by using massive collinear feature points and the camera internal parameters can b... |
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| Keywords: | Camera calibration Distortion correction Non-metric Collinear points |
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