A method of using standard flat objects to calibrate the spatial position of the sensor

Determining the relationship between coordinate systems during measurement is one of the key works to ensure the accuracy of the measurement system. According to the traditional calibration method of standard spherical surface, because of the problem of measuring angle of surface features such as spherical surface, and the interference of specular reflection is easy to occur, the measurement of spherical surface by structural light often cannot fully describe the calibration feature or produce errors. In this paper, a unified calibration method based on the standard plane is proposed. Because plane features are easier to obtain and easier to control the appearance of specular reflection interference, and the calibration of plane geometry features used in this paper can completely avoid the distortion caused by the pending calibration measurement system. Therefore, the method can fully meet the measurement accuracy requirements of the measurement system.