A linear camera calibration method with vanishing point and the invariance of cross-ratio is proposed.
在已知一个消隐点的情况下，利用交比不变性及消隐点的知识对摄像机进行标定。
2
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。
3
Based on invariance of the cross-ratio in projective transformation, this paper designed a gray artificial landmark for vision-based recognition by shape information.