中文摘要：

分析了用线性模型进行摄像机定标的缺点和局限性。然后设计了一种基于径向畸变的非线性模型，并提出了用两步修正法解算该非线性模型摄像机的内外参数。该方法将传统求解的非线性最小二乘法转换为线性最小二乘法和简单的非线性方法，实验结果表明该方法可简化计算过程以提高摄像机的标定效率，同时可改善摄像机的标定精度。

英文摘要：

The shortcoming and localization in calibration of camera with linear model are analyzed. Then a kind of non-linear model of camera based on radical aberration is designed, and a new method to calibrate for this non-hnear model of camera with two-ste Pcorrection method is put forward. This method can transform the traditional solution of non-linear method of least squares into linear method of least squares and simple non-linear method. The result of experiment indicates that this new method can simplify the process of computation in order to increase the calibration efficiency of camera parameter, at the same time it can improve the calibration precision of camera parameter.