用共线点列标定摄像机镜头畸变

详细信息

Camera lens distortion calibration with co-line points

School of Opto-electronic Information, University of Electronic Science & Technology of China, Chengdu 610054, China

摘要: 提出一种用共线点列标定摄像机镜头畸变参数的方法,先根据交叉比不变性确定畸变中心,再利用直线的中心投影仍为直线这一性质确定畸变系数。仿真表明,只要采用相应方法降低像点坐标的误差,畸变中心的误差小于2个像素,畸变系数的相对误差不超过0.1。实验表明,用该方法得到的畸变参数,能够很好地校正图像。该方法简单易行,可应用于摄影测量、计算机视觉等领域。
- 仪器测量与计量 /
- 镜头畸变 /
- 摄像机标定 /
- 图像纠正 /
- 交叉比
Abstract: A camera calibration method with co-line points is proposed,in which distortion center is located according to cross ratio invariability,and then distortion coefficients are calculated based on a line's central projection is a line.The emulation indicates that only if some measures are adopted to decrease the projection points' coordinate error,error of the distortion center would be less than 2 pixels and relative error of the distortion coefficients would be no more than 0.1.The experiment shows that these distortion parameters gained with the proposed method are good at a correcting distortion image.Because of its easiness and simplicity,this method can be used in some domains such as photogrammetry,computer vision,etc.
- iustrumentation measarement and metrology /
- lens distortion /
- camera calibration /
- image correcting /
- cross ratio

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