Calibration of camera intrinsic parameters based on the properties of the polar of circular points.

Three-dimensional stratified reconstruction from images requires acquisition of circular points. This study proposes a new algorithm for calibrating camera intrinsic parameters using the properties of the polar of circular points (PCPs). Because the PCPs are asymptotic, which are self-conjugate diameters of the circle, the obtained PCPs can determine the image of the circular points and a group of orthogonal vanishing points in the image plane. On this basis, the camera parameters can be calibrated. The results of the simulation experiment and the data of the real experiment prove that the proposed method is effective and feasible.