A simple technique to determine calibration parameters for coplanar camera calibration

Coplanar camera calibration is the process of determining the extrinsic and intrinsic parameters of camera, where a set of image and two-dimensional (2D) control points are known. This paper presents a simple and efficient technique to compute the calibration parameters for coplanar calibration. Computing of the calibration parameters is directly performed on computer image array in the frame buffer. Thereby, the image center can simultaneously computed together with other parameters. However, the parameters can be solved using available three orthogonality constraints, where the scale factor is assumed as one and the lens distortion is not considered. The proposed algorithm is tested with noise-free synthetic image and synthetic image corrupted with known noise. The results show that the proposed technique is accurate and robust to noise.