Camera calibration method based on vector method and three collinear points

The invention provides a camera calibration method based on a vector method and three collinear points. The optical axis vector is calibrated through the vector method, a calibration rotary matrix is replaced, the three-dimensional coordinates of a space point are calculated through an analytic geometry theory, optical vision measurement of the structure is achieved, and then calibration of a camera is achieved. The camera calibration method based on the vector method and the three collinear points is high in speed, high in accuracy and particularly suitable for camera calibration on some severe work environment occasions.