Dynamic camera calibration

A close range camera calibration scheme can be divided into a static scheme and a dynamic scheme. The static scheme is used to calibrate single camera by applying bundle adjustment on multiple digitized images of a calibration block. The dynamic scheme calibrates the stereo cameras using camera parameters derived from the static calibration even after unknown motion of the cameras and change of focus. An unknown object can be used as the calibration block. After the cameras are dynamically calibrated, scaled dimensions of the unknown object can be determined as well. As additional conditions, prior knowledge of the object can be integrated into the bundle adjustment of the dynamic scheme to increase the accuracy