Acoording to the least square principle the normal equations and its coefficient matrix are performed.

按最小二乘原理，建立了球面坐标系下的法方程组及其系数矩阵的具体形式。

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And then an new iterative method is presented to solve the nonlinear equations system obtained from moving least-square approximation.

之后，借鉴牛顿法、平衡法和摄动法对由移动最小二乘法得到的非线性代数方程组提出了新的求解方法。

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Linear distortion model is used and distortion coefficients are obtained by resolving over-determined linear equations and least square method.

采用线性畸变模型，由最小二乘法解线性方程组得到摄像系统畸变模型的畸变系数。

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