OPTICAL AXIS CALIBRATION METHOD AND APPARATUS OF OPTICAL AXIS DETECTION SYSTEM, TERMINAL, SYSTEM, AND MEDIUM

• Main Authors: WU, Wanduo, DUAN, Yanxu, ZHENG, Dejin
• Format: Patent
• Language: Chinese; English; French
• Published: 27.10.2022
• Subjects: CALCULATING; COMPUTING; COUNTING; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; TESTING

An optical axis calibration method and apparatus of an optical axis detection system, a terminal, a system, and a medium, relating to the optical field. The optical axis calibration method comprises: obtaining a first speckle image and a second speckle image that are respectively acquired before and after a speckle emitting apparatus rotates (S401); extracting at least two first speckle points in the first speckle image and second speckle points corresponding to the first speckle points in the second speckle image, so as to obtain at least two line segments formed by connecting the first speckle points and the second speckle points corresponding to the first speckle points under the same pixel coordinate system (S402); and calculating a perpendicular bisector of each line segment, and determining an optical axis reference point according to an intersection point of each perpendicular bisector (S403). By means of the provided method, the influence of jig tolerance on optical axis calibration can be reduced, an