中文说明：建立几何畸变模型，实现畸变矫正。通过获取模板图像的坐标值，求取变换模型参数，求出变换多项式的系数。
English Description：
The geometric distortion model is established to correct the distortion. By obtaining the coordinate value of the template image, the transformation model parameters are obtained, and the coefficients of the transformation polynomial are obtained.