Active recovery of the intrinsic parameters of a camera

We present a new method for camera calibration from multiple views. In contrast to [8], the new method exploits the motion of the camera which is assumed to be known. Moving the camera in three dimensions eliminates the requirement for a non-coplanar calibration object as well as overcoming the problem of parameter bias due to over-fitting. We present a series of experiments which confirm that the computed values of the intrinsic (focal length, lens distortion and image centre) and extrinsic camera parameters remain very stable over time, regardless of viewpoint.