INTERGEO Agenda - english

Georeferencing is an essential step in processing of LiDAR data, and a critical factor in the accuracy of LiDAR mapping data and therefore for any downstream task. While the point cloud is usually seen as the output product of LiDAR mapping, the laser scanner itself measures only the range to a target and the directional angle of the laser beam. Knowledge of the scanner’s position and orientation (trajectory) is required to georeferenced the measurement data to an earth-fixed coordinate system. The scanner’s trajectory is derived from GNSS (global satellite navigation system) positioning and inertial navigation, as well as possibly other sensor input depending on the application. This talk discusses the design and implementation of a fully integrated navigation and georeferencing solution for kinematic LiDAR mapping, from calibration, to processing algorithms, to validation. After providing a short description of the technical background, various case studies from different fields of application are presented to investigate the performance of this approach including mobile mapping in urban areas, airborne corridor mapping and combined multi-modal terrestrial and UAV-borne data acquisitions.