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GIScience Blog

Category: Research

  • Paper on High-Frequency 3D Geomorphic Observation using Hourly LiDAR Time Series

    Can you imagine how much sand is being moved on the beach in the course of a week? Did you ever observe truckloads of sand being transported on the beach in the absence of storms and bulldozers? It is hardly possible to estimate to the naked eye, but can be quantified with permanent terrestrial laser…

  • Paper on Analysis of Feature Relevance in Deep Learning for 3D Point Cloud Classification

    A paper investigating the relevance of (pre-calculated) features for 3D point cloud classification using deep learning was just published in the ISPRS Annals of Photogrammetry and Remote Sensing. The study presents a non-end-to-end deep learning classifier for 3D point clouds using multiple sets of input features and compares it with an implementation of the state-of-the-art…

  • ISCRAM 2019 in Valencia- Towards closer exchange in crisis management between practitioners, stakeholders and researchers

    The 16th ISCRAM conference took place in the city of Valencia (Spain). It succeeded again to gather an international audience of researchers that shared their work all around crisis management. As ISCRAM is mainly interested in the support and intersection of practical application in crisis management and research, the focus was however again on another…

  • Open access publication of terrestrial laser scanning and terrestrial and UAV images of Alpine Regions in Austria

    Very interesting terrestrial laser scanning and terrestrial and UAV image datasets of different Alpine sites in Austria have just been openly provided on PANGAEA. The data are related to the first (2015) and second (2017) edition of the Innsbruck Summer School of Alpine Research – Close Range Sensing Techniques in Alpine Terrain and can, for…

  • Successfull PhD Defence by Clemens Jacobs on Plausibility Estimation of Citizen Science Observations for Biodiversity

    Last week Dr. Clemens Jacobs successfully defended his PhD about methods for assessing the data quality of citizen science observations of organisms. Congratulations, well done!!! We wish all the very best for the future! The research aimed at using geographic context as an information source for estimating the plausibility of an observation, e.g., of a bird,…

  • SYSSIFOSS project start and first test scans

    On May 1st, the SYSSIFOSS project has started and first test scans have already been conducted in the forest. Experciences from these initial testings serve as a basis for many field campaigns this summer which aim at the acquisition of high-density point clouds of 140 single trees with a RIEGL VZ-400 terrestrial laser scanner. Moreover,…

  • First test flights with brand-new UAV-borne LiDAR system

    The 3DGeo group is currently testing their new UAV-borne LiDAR (ULS) system. The integrated system consists of a DJI Matrice 600 copter, a RIEGL miniVUX-1 UAV laser scanner and is complemented by an inertial measurement unit and a realtime kinematics GNSS. Combining the different components in one system allows for high-accuracy (cm) acquisition of 3D…

  • HeiGIT/ GIScience at ISCRAM conference in Valencia

    19th-22nd of May, the 16th Information Systems for Crisis Response and Management (ISCRAM) conference is taking place in Valencia. Likewise to previous years, the GIScience Research Group/HeiGIT are taking part and supporting with several contributions. Martin Hilljegerdes will present a paper, based on his Master Thesis, focusing on “Evaluating the effects of consecutive hurricane hits…

  • PhD Colloquium “Deep Learning in Photogrammetry, Remote Sensing and Geospatial Information Processing”

    On 14th and 15th May, our 3DGeo group members Bernhard Höfle and Lukas Winiwarter were co-organizing and participating in the 4th colloquium for PhD students working on the topic of Deep Learning and its applications in Photogrammetry, Remote Sensing and Geoinformation Processing of the Deutsche Geodätische Kommission (DGK) and the Deutsche Gesellschaft für Photogrammetrie und…

  • Sonniges „meinGrün“ Konsortiumstreffen in Heidelberg

    Letzte Woche fand das zweite große Konsortiumstreffen im Projekt „meinGrün“ in Heidelberg statt. Zusammen mit unseren Projektpartnern vom IÖR , DLR , ISB AG , dem Institut für Kartographie der TU Dresden , Terra Concordia (mundraub.org) und Urbanista haben wir zwei Tage lang an der Weiterentwicklung unserer App gearbeitet, welche es Bürgerinnen in Heidelberg und…

  • Exploring OSM history: the example of health related amenities

    Introduction Exploring how OpenStreetMap data developed over time across different administrative untis might reveal interesting insights into the self organizing approach of the OSM communities and can potentially be used to derive intrinsic data quality indicators. It might even be possible to estimate the completeness of OSM for a specific key-value combination as done by…

  • Usage of HELIOS for various applications

    The Heidelberg LiDAR Operations Simulator (HELIOS) is an open source laser scanning simulation framework for interactive simulation and visualization of terrestrial, mobile and airborne laser scanning surveys. It can be flexibly used for teaching and training of laser scanning, development of new scanner hardware and scanning methods, or generation of artificial scan data sets to…