Category: Publications
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Study published: “Characterizing tufa barrages in relation to channel bed morphology in a small karstic river by airborne LiDAR topo-bathymetry”
We are pleased to announce the publication of the study “Characterizing tufa barrages in relation to channel bed morphology in a small karstic river by airborne LiDAR topo-bathymetry” in the Proceedings of the Geologists’ Association. The manuscript is already available online (http://dx.doi.org/10.1016/j.pgeola.2016.10.004) The motivation of the study is the high value of freshwater tufas in…
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The Tasks of the Crowd: A Typology of Tasks in Geographic Information Crowdsourcing and a Case Study in Humanitarian Mapping
In the past few years, volunteers have produced geographic information of different kinds, using a variety of different crowdsourcing platforms, within a broad range of contexts. However, there is still a lack of clarity about the specific types of tasks that volunteers can perform for deriving geographic information from remotely sensed imagery, and how the…
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Beyond 3-D: The New Spectrum of LiDAR Applications for Earth and Ecological Sciences
Capturing and quantifying the world in three dimensions (x,y,z) using light detection and ranging (lidar) technology drives fundamental advances in the Earth and Ecological Sciences (EES). However, additional lidar dimensions offer the possibility to transcend basic 3-D mapping capabilities, including i) the physical time (t) dimension from repeat lidar acquisition and ii) laser return intensity…
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Full-Waveform Airborne Laser Scanning in Vegetation Studies—A Review of Point Cloud and Waveform Features for Tree Species Classification
In recent years, small-footprint full-waveform airborne laser scanning has become readily available and established for vegetation studies in the fields of forestry, agriculture and urban studies. Independent of the field of application and the derived final product, each study uses features to classify a target object and to assess its characteristics (e.g., tree species). These…
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Defining Fitness-for-Use for Crowdsourced Points of Interest (POI)
Due to the advent of Volunteered Geographic Information (VGI), large datasets of user-generated Points of Interest (POI) are now available. As with all VGI, however, there is uncertainty concerning data quality and fitness-for-use. Currently, the task of evaluating fitness-for-use of POI is left to the data user, with no guidance framework being available which is…
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Using participatory geographic approaches for urban flood risk in Santiago de Chile: Insights from a governance analysis
Studies based on information acquired by participative geographic approaches have sought to cope with emergency situations and disasters such as floods. However, the impact of these approaches to flood risk governance systems in order to understand these types of events as a complete risk cycle is still not clear. In a recent paper, we analyse…
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An Overview on supporting Disaster Management through Crowdsourcing Geographic Information
The “Ruperto Carola” research magazine reports on scientific findings and current research projects at Heidelberg University. The current issue “North & South” refers to the „International Year of Global Understanding“ and features among others a short overview article on some of the work that is done at the GIScience Research Group Heidelberg with respect to…
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GIScience HD @AGIT 2016
Last week members of the GIScience Research Group were attending the AGIT – Symposium and Exhibit for applied Geoinformatics in Salzburg. Beside the interesting welcome note given by Anita Graser from AIT talking about the Open Data, Open Source and Open Services and the impact for Geospatial Information Systems, further keynotes and conference talks followed,…