Camera Calibration Based on Circular Marking Board

Camera calibration is one of the research hotspots in the field of computer vision. Its purpose to determine the parameter model of the camera by single or multiple images taken by the camera, and then get the parameters of the camera. Aiming at the problem of camera calibration, a method of obtaining camera parameters by using circular marker plate is presented. After separating the background and the circular marker plate, the Canny operator is used to extract the marker plate, and the nonlinear least square ellipse fitting method is used to obtain the camera parameters. The calibration results show that the proposed calibration method is feasible and effective, it has good calibration precision and good robustness.