MULTIMODE CAMERA CALIBRATION

Camera calibration denotes the task of estimating the projective mapping between 3D world and the camera image plane. Most of the modern cameras have multiple image and video acquisition modes, which differ in image resolution, field of view or aspect ratio. Each mode should be treated as an independent device, and therefore independently calibrated. This straightforward solution implies the acquisition of the calibration dataset and execution of the calibration routine for each of the camera modes, a time-consuming and error-prone task, especially in a multi-camera scenario. In this paper we propose a multimode camera calibration approach that noticeably relieves this task. We show how the calibration model of one camera mode can be easily transferred to the other modes without the need of multiple calibrations. The evaluation test performed on off-the-shelf consumer cameras shows that the proposed method not only reduces the required amount of user interaction, but also allows for the calibration accuracy improvement.