Title :
Dynamic camera calibration
Author :
Huang, Tony C. ; Mitchell, Robert O.
Author_Institution :
Intelligent Syst. Center, Missouri Univ., Rolla, MO, USA
Abstract :
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
Keywords :
calibration; cameras; charge-coupled devices; computer vision; parameter estimation; CCD cameras; bundle adjustment; calibration block; camera parameters; close range camera calibration scheme; dynamic camera calibration; dynamic scheme; multiple digitized images; scaled dimensions; static scheme; stereo cameras; unknown motion; unknown object; Calibration; Charge coupled devices; Charge-coupled image sensors; Focusing; Intelligent systems; Nonlinear distortion; Pixel; Robot vision systems; Shape; Smart cameras;
Conference_Titel :
Computer Vision, 1995. Proceedings., International Symposium on
Conference_Location :
Coral Gables, FL
Print_ISBN :
0-8186-7190-4
DOI :
10.1109/ISCV.1995.476996
