Roderik C. Lindenbergh

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The focus of this paper is on the quantification of ongoing mass and volume changes over the Greenland ice sheet. For that purpose, we used elevation changes derived from the Ice, Cloud, and land Elevation Satellite (ICESat) laser altimetry mission and monthly variations of the Earth's gravity field as observed by the Gravity Recovery and Climate Experiment(More)
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 applications.(More)
Keywords: Tibetan plateau Lake level ICESat MODIS water mask RANSAC a b s t r a c t The Tibetan plateau contains thousands of small and big lakes. Changes in the water level of these lakes can be an important indicator for the water balance of the Tibetan plateau, but were until now extremely difficult to monitor: performing continuous in situ measurements(More)
—High-density airborne light detection and ranging (LiDAR) data with point densities over 50 points/m 2 provide new opportunities, because previously inaccessible quantities of an individual tree can be derived directly from the data. We introduce a skeleton measurement methodology to extract the diameter at breast height (DBH) from airborne point clouds of(More)
SUMMARY (English) 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(More)
Monitoring and understanding coastal processes is important for the Netherlands since the most densely populated areas are situated directly behind the coastal defense. Traditionally, bathymetric changes are monitored at annual intervals, although nowadays it is understood that most dramatic changes are related to high-energy events like storms. To monitor(More)
A detailed elevation model of the Netherlands has been acquired with the use of Airborne Laser Altimetry and is managed by AHN (Actueel Hoogtebestand Nederland). This elevation model can be used for a large amount of applications. Using a suited illumination technique it turned out to be possible to find and visualize so-called Celtic fields, agricultural(More)
[1] The superimposition of rhythmic bed forms of different spatial scales is a common and natural phenomenon on sandy seabeds. The dynamics of such seabeds may interfere with different offshore activities and are therefore of interest to both scientists and offshore developers. State-of-the-art echo sounding accuracy allows for the analysis of bed form(More)