Camera calibration with a motorized zoom lens

摘要

This paper presents a simple and efficient method of calibratingthe intrinsic camera parameters for all the lens settings of a motorizedzoom lens. We fix the aperture setting and perform the cameracalibration, adaptively, over the ranges of the room and focus settings.Bilinear interpolation is used to provide the values of the intrinsiccamera parameters for those lens settings where no observations aretaken. Our experiments show that the proposed method can provideaccurate intrinsic camera parameters for all the lens settings, eventhough camera calibration is performed only for a small number ofsampled lens settings. A calibration object suitable for zoom lenscalibration is also presented