Study on binocular stereo camera calibration method

Camera calibration is a key technology in the application of the stereo visual system. On the basis of analyzing the OpenCV camera model and the existing calibration methods of a binocular vision system, a binocular camera calibration algorithm was designed to obtain the internal and external camera parameters. Considering the importance of corner extraction in the camera calibration, a new corner extraction algorithm of gradient threshold is proposed, which can effectively extract the corners. The experiments show that this method is easy to be carried out and the calibration results are stable and accurate, which can satisfy the requirements of binocular stereo visual system application.