At the same time the feature point coordinates on the planar target were achieved with cross ratio invariability theory, then structured light parameters was calibrated.
同时利用交比不变性原理获取平面靶标上的特征点坐标，完成了结构光平面参数的标定。
Single view metrology compute the 3d coordinate of a point based on the projective geometry's characteristic of cross-ratio invariability.
单视图测量理论主要是利用了射影几何中的交比不变性来计算图像上点的三维坐标。
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