approximate straight line

• 近似直线

approximate straight line的用法和样例：

例句

1. An approximate line passing through the center is approached by anamorphic curves.Intersection of two different approximate lines is regarded as the image center.
   无需任何预先参数，利用畸变曲线拟合逼近过中心的近似直线，通过两直线的交点求得图像对称中心。