A Deformed Chessboard Pattern for Automatic Camera Calibration

摘要

Chessboard pattern is popular in most of state-of-the-art camera calibration toolboxes. However, because of its geometric symmetry, it results in ambiguous extrinsic parameters or requires manual intervention to select the correct correspondences of extracted corners in image. In this paper a deformed chessboard pattern is designed to automatically accomplish camera calibration and metric rectification. We mainly utilize the cuboid bound of optical center to automatically obtain the correct correspondences of four extreme corners. The real experiments are shown to verify the correctness of the proposed technique.