Category: Publications
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Tagging the main entrances of public buildings based on OpenStreetMap and binary imbalanced learning
Determining the location of a building’s entrance is crucial to location-based services, such as wayfinding for pedestrians. Unfortunately, entrance information is often missing from current mainstream map providers. Frequently, automatic approaches for detecting building entrances are based on street-level images that are not widely available. To address this issue, in a recently published paper in…
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Fully automatic spatiotemporal segmentation of 3D LiDAR time series for the extraction of natural surface changes
When and where do changes occur in dynamic natural landscapes? A new method has been published that enables the automatic extraction of surface changes from entire time series of 3D point clouds. The developed method of spatiotemporal segmentation extracts changes regarding their surface change history, which makes it particularly useful for natural scenes that are…
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The evolution of humanitarian mapping within the OpenStreetMap community
In the past 10 years, the collaborative maps of OpenStreetMap (OSM) have been used to support humanitarian efforts around the world as well as to fill important data gaps for implementing major development frameworks such as the Sustainable Development Goals (SDGs). In a recently accepted paper we provide a comprehensive assessment of the evolution of…
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HELIOS++ 1.0.0 Software & Preprint Release
The 3DGeo Research Group is proud to announce the release of their novel ray-tracing based laser scanning simulator HELIOS++! HELIOS++ is a general-purpose simulation software for virtual laser scanning data acquisition. Such data can be used to complement real data in many use cases. Some examples include the generation of training data for machine learning,…
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Erstes Handbuch zur Veranstaltung von Mapathons im Deutschen Roten Kreuz
Das Handbuch zur Veranstaltung von Mapathons im Deutschen Roten Kreuz (DRK) ist da! In dem Handbuch wird beschrieben, was bei der Durchführung eines Mapathon zu beachten ist. Es beginnt mit der Frage, was überhaupt ein Mapathon ist und erklärt warum und wie durch die Durchführung von regelmäßigen Mapathons z.B. im Rahmen von Bereitschaftsabenden, wichtige Geodaten…
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4D change analysis for improving our understanding of dynamic landscapes
Time series of topographic point clouds offer great possibilities to advance our understanding of dynamic landscapes. To exploit the full information these 4D datasets contain on spatial and temporal properties of natural surface changes, the 3DGeo research group is developing methods for 4D change analysis. These methods are required to answer fundamental questions on the…
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LandSense Horizon 2020 A Citizen Observatory and Innovation Marketplace for Land Use and Land Cover Monitoring, project successful finished
The Horizon 2020 LandSense project was concluded successful. Please find a selection of the produced publications and deliverables here. The project has enabled our group to pursue quality aspects of voluntarily collected geo information data and to ramp up efforts related to OSMlanduse. Together with the University of Nottingham (Giles Foody) and Institut national de l’information…
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Use of TanDEM-X and Sentinel products to derive gully activity maps in Kunene Region (Namibia) based on automatic iterative Random Forest approach
Gullies are landforms with specific patterns of shape, topography, hydrology, vegetation, and soil characteristics. Remote sensing products (TanDEM-X, Sentinel-1 and Sentinel-2) serve as inputs into an iterative algorithm, initialized using a micro-mapping simulation as training data, to map gullies in the northwestern of Namibia. A Random Forest Classifier examines pixels with similar characteristics in a…
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Auch Alltagsaktivitäten steigern das Wohlbefinden
Eine in Science Advances veröffentlichte Studie liefert neue Erkenntnisse zum Zusammenhang von körperlicher Aktivität und Wohlbefinden im Alltag. Dazu wurde unter anderem untersucht, welche Hirnregionen dabei eine Rolle spielen. Körperliche Aktivität macht glücklich und ist wichtig, um auch psychisch gesund zu bleiben. Forscherinnen und Forscher des Zentralinstituts für Seelische Gesundheit (ZI) in Mannheim, des Karlsruher…
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New paper published: Participatory Mapping and Visualization of Local Knowledge: An Example from Eberbach, Germany
Worldwide, more and more people are affected by flooding. Local knowledge provides a valuable source of information for disaster risk reduction. We present an approach for visualizing and formalizing this local knowledge. More information can be found in the paper: Klonner, C., Usón, T.J., Aeschbach, N. Höfle, B. (2020): Participatory Mapping and Visualization of Local…
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Regional Variations of Context-based Association Rules in OpenStreetMap
As a user‐generated map of the whole world, OpenStreetMap (OSM) provides valuable information about the natural and built environment. However, the spatial heterogeneity of the data due to cultural differences and the spatially varying mapping process makes the extraction of reliable information difficult. A newly published study investigates the variability of association rules extracted from…