Error budget of terrestrial laserscanning: Influence of the intensity remission on the scan quality

Terrestrial laser scanning (TLS) is a surveying technology to measure distances to surfaces in the spherical surrounding of the scanner instrument. In contrast to pulse, i.e. time of flight scanners, phase based scanners emit a modulated wave signal that allows for determining the object distance from the returned phase pattern. Because of their...

Skeleton-based botanic tree diameter estimation from dense LiDAR data

New airborne LiDAR (Light Detection and Ranging) measurement systems, like the FLI-MAP 400 System, make it possible to obtain high density data containing far more information about single objects, like trees, than traditional airborne laser systems. Therefore, it becomes feasible to analyze geometric properties of trees on the individual object...

SkelTre - Fast Skeletonisation for Imperfect Point Cloud Data of Botanic Trees

Terrestrial laser scanners capture 3D geometry as a point cloud. This paper reports on a new algorithm aiming at the skeletonisation of a laser scanner point cloud, representing a botanical tree without leafs. The resulting skeleton can subsequently be applied to obtain tree parameters like length and diameter of branches for botanic...

Structural monitoring of tunnels using terrestrial laser scanning

In recent years terrestrial laser scanning is rapidly evolving as a surveying technique for the monitoring of engineering objects like roof constructions, mines, dams, viaducts and tunnels. The advantage of laser scanning above traditional surveying methods is that it allows for the rapid acquisition of millions of scan points representing the...

Applications for point cloud skeletonizations in forestry and agriculture

In recent years, both airborne and terrestrial laser scanning developed to a standard technique for acquiring information on terrestrial landscapes. Here forest inventory and orchard management is considered. Inventory and parameterization of individual trees in orchards and forests are of large interest in nowadays society because of the...