Large Field of View Binocular Stereo Vision Sensor Calibration Method Based on 3D Virtual Target

In this paper, to address the problem of high calibration accuracy for the binocular stereo vision sensor of large field of view, a binocular stereo vision sensor calibration method using a three-dimensional virtual target constructed by a precision two-axis turntable, laser tracker and a single calibration reference point is studied. The precision two-axis turntable drives the camera capturing a fixed single optical reference point to make two-dimensional rotation, which construct a precise reference control field and achieve calibration. The internal and external reference calibration of the binocular stereo vision sensor is automatically and efficiently completed by the program control, so the method does not need to adjust or know the positional relationship between the reference point and the camera or the turntable. The error simulation analysis and calibration experiments verify that the calibration method proposed in this paper has high reliability and calibration accuracy.