%0 Electronic Article %A Michael Brogan %+ School of Informatics and Engineering, Institute of Technology Blanchardstown, Dublin 15, Ireland %A Simon McLoughlin %+ School of Informatics and Engineering, Institute of Technology Blanchardstown, Dublin 15, Ireland %A Catherine Deegan %+ School of Informatics and Engineering, Institute of Technology Blanchardstown, Dublin 15, Ireland %K MMS %K stereo camera calibration %K portable mobile mapping system %K Global Positioning System %K inertial navigation system %K geo-reference road markings %K global coordinates %K portable system %X Mobile mapping systems that detect and geo-reference road markings almost always consist of a stereo camera system integrated with a global positioning system/inertial navigation system. The data acquired by this navigational system allows features detected in the stereo images to be assigned global co-ordinates. An essential step in this process is the calibration of the cameras, as it relates the pose of the two cameras to each other and a world co-ordinate system. In Europe, road markings must be evaluated from a 35 m range, so the cameras are required to have a wide field of view. Traditional calibration methods supposedly require a calibration object that would fill most of the calibration images. This large field of view would require a calibration object of substantial size that would be impractical for the purposes of this portable system. This study explores the theory of camera calibration and then details two camera calibration techniques (using portable 3D and 2D calibration objects). The accuracy of these methods is then evaluated using a ground-truth experiment. %@ 1751-9632 %T Assessment of stereo camera calibration techniques for a portable mobile mapping system %B IET Computer Vision %D June 2013 %V 7 %N 3 %P 209-217 %I Institution of Engineering and Technology %U https://digital-library.theiet.org/;jsessionid=vrqji78wkl7j.x-iet-live-01content/journals/10.1049/iet-cvi.2012.0085 %G EN