Category: Research
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Auto3Dscapes video about research in 4D change analysis
This new video by the 3DGeo group presents the challenges of 3D Earth observation and our advances in 4D change analysis in the frame of the Auto3Dscapes project: Direct link to the video: https://youtu.be/Fdwq-Cp0mFY Many thanks to Claudia Denis and David Jäger for helping to realize the video! We are also very happy about the…
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New Jupyter Notebook: Analysis of Access to Health Care using openrouteservice Isochrones API
What is the idea behind the Notebook? In the case of an emergency (e.g. floods, earthquakes, political crisis) it is important to know where the health facilities are located. Furthermore, it is important to identify which cities/districts have a reduced or no access at all to health facilities before an emergency. Many countries still posses…
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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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Recent changes to OpenStreetMap healthcare infrastructure in India
India accounts for nearly 18% of the worlds population. The country is also one of the main carrier of the worlds disease burden. Despite the general increase in life expectancy and decreasing mortality due to communicable diseases and malnutrition in recent years, the numbers of non-communicable diseases are rising substantially. Cardiovascular diseases such as diabetes and…
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Exploring Localness of OSM Data – An analysis using the ohsome API
“Local Knowledge” is constituting the exceptional value of Volunteered Geographical Information and thus also considered as an important indicator of data quality. We are interested in how much local information is captured in OpenStreetMap data. In this blog post we explore the temporal evolution of mapping in OSM and the information stored in its database,…
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Neu: Globale OSM History Analysen mit ohsomeHeX v1.0
Erhalten Sie mit ohsomeHeX wertvolle Einblicke in die Qualität und den Entwicklungsprozess von OpenStreetMap-Daten! (see for english version here) Das HeiGIT Big Data Team freut sich zur Exploration der Veränderungen der globalen Daten in OpenStreetMap nun eine Version 1.0 von ohsomeHeX , dem OSM History eXplorer zu veröffentlichen, die eine komplett überarbeitete Benutzeroberfläche bietet. Diese macht es einfacher…
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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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GIScience at GeOnG 2020
These days so much is different- also conferences. Carolin Klonner and Marcel Reinmuth attended the GeOnG 2020 virtually. Thanks to the organizers! It worked well and there was great exchange between the participants. The workshop on experiences in defining health catchment areas brought together diverse stakeholders and approaches. Marcel Reinmuth contributed from the scientific open…
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OSMlanduse European Union validation effort EuroSDR conference 11/24/2020
During the EuroSDR workshop we will present our OSMlanduse product (earlier post) to the land use (LU) and land cover community (LC) and highlight class accuracies and a benchmark comparison towards existing national authoritative products. Accuracy estimated to be presented are based on more than 7k reference points collected in the past month through a…
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Klima-Netzwerk PRIO1: Herbstcamp
Neue Konzepte zur Bewältigung der Klimakrise und zur Gestaltung der Zukunft standen im Mittelpunkt des “Digitalen Herbstcamp” von PRIO1, einem neu gegründeten Klima-Netzwerk. Die Teilnehmer*innen – zwischen 16 und 25 Jahre alt – entwickelten vom 13. bis 15. November 2020 im Rahmen von parallel laufenden Workshops Ideen und konkrete Aktivitäten zu den Handlungsfeldern “Wohlstand und…
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Starkregen in Heidelberg: Zusammenarbeit mit Bürgern der Stadt
Starkregen stellt eine besondere Gefährdung in Heidelberg dar. Studierende haben bereits im Rahmen eines Seminars der GIScience und in Zusammenarbeit mit dem Amt für Umweltschutz, Gewerbeaufsicht und Energie der Stadt Heidelberg Informationen zu Starkregen in Handschuhsheim mit partizipativen Methoden gesammelt und analysiert (Blogbeitrag). Nun bietet die Stadt Heidelberg über die Infoseite www.heidelberg.de/starkregen ein Portal zur…
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OSM History Analysis with ohsomeHeX v1.0
Get valuable insights into the quality and development process of OpenStreetMap data with ohsomeHeX! We are proud to announce a new release that provides a completely redesigned UI that makes it easier to keep track of all relevant information. Choose one or more topics, choose different areas of interest and let ohsomeHeX create comparison graphs…