Feed on
Posts
Comments
In September 2017, the 3D Spatial Data Processing Group (3DGeo) joined the German-Russian expedition of the Alfred Wegener Institute (AWI) for Polar and Marine Research to the Arctic research station Samoylov (N 72°22’, E 126°29’) in the central Lena Delta.

Under the lead of Julia Boike, the research team maintained and expanded long-term monitoring stations and conducted repeat measurements of surface and subsurface properties. In the frame of this year’s expedition, for the first time, terrestrial laser scanning (TLS) of the ground surface was conducted. In-situ 3D geodata was successfully captured for various sites on Samoylov and the nearby island of Kurungnakh, where AWI researchers focus their work on the dynamically changing permafrost system.

The high-precision 3D point cloud data will be used to obtain information on microtopographic and vegetation characteristics of different landscape units. Moreover, the captured data provides a valuable basis for a timeseries of 3D geodata for long-term analyses and observation of permafrost-related processes in this Arctic tundra environment.

In addition to the TLS campaigns, a close-range photogrammetric approach to represent permafrost features in 3D will be tested based on large sets of images captured on site with regular digital cameras.

LiDAR meets Art

An interesting 3D art project using point clouds of the 3D Spatial Data Processing research group of Prof. Bernhard Höfle (3DGeo) was recently realized by artist Gerrit Frohne-Brinkmann. The data were acquired from natural karst cave features in the Dechen Cave near Iserlohn, Germany both with a low-cost Kinect sensor and terrestrial LiDAR.

For the art project, the 3DGeo group extracted various stalagmites and stalactites from the point clouds. From these, Gerrit Frohne-Brinkmann created 3D meshes and printed the objects with a 3D printer – some of them even in real size, such as the so called “Palme”, featuring a height of 2.6 m.

Within the frame of his advancement award in the field of sculpture/installation, Gerrit Frohne-Brinkmann presents the final objects to the public at his exhibition in the Town Museum of Oldenburg from 18th September until 15th October. Further information on Gerrit Frohne-Brinkmann and his work can be found on his personal website.

We would like to thank Dr. Stefan Niggemann (Dechen Cave administration) for allowing the usage of the data for the art project, as well as Gerrit Frohne-Brinkmann for promoting this extraordinary usage of 3D point clouds with his work.

Hämmerle, M., Höfle, B., Fuchs, J., Schröder-Ritzrau, A., Vollweiler, N. & Frank, N. (2014): Comparison of Kinect and Terrestrial LiDAR Capturing Natural Karst Cave 3D Objects. IEEE Geoscience and Remote Sensing Letters, Vol. 11(11), pp. 1896-1900. http://dx.doi.org/10.1109/LGRS.2014.2313599 and https://doi.pangaea.de/10.1594/PANGAEA.830567

(Text: Vivien Zahs)

We are happy to announce that disastermappers heidelberg just joined youthmappers- an international network with over 4,000 university student mappers in 78 campus chapters that are spread across 25 countries. Since 2015, youthmappers help student mapping initiatives around the world to address real-world challenges, following the theme “We don`t just build maps- we build mappers”. After Polimappers in Milan, disastermappers are the second chapter to support the network from Europe.

Since 2014 the launch of the students initiative, disastermappers heidelberg have been organizing mapathons, webinars and workshops at the Geographical Institute at Heidelberg University and beyond to build a platform for exchange between students, researchers and humanitarian actors. Furthermore, disastermappers support the work of humanitarian organizations, the Humanitarian OpenStreetMap Team and local communities e.g. through their membership in Missing Maps, with mapping, research and applications in collaboration with the GIScience Research Group Heidelberg and HeiGIT.

After learning about youthmappers and starting to connect through mutual membership in Missing Maps, disastermappers are looking forward to closer collaboration with the numerous chapters, exciting exchange and projects.

Learn more about youthmappers and the participating chapters here.

HeiGIT is generously supported through core funding from the Klaus Tschira Foundation Heidelberg.

Feel free to submit papers to our DGPF Working Group on Geoinformatics (Prof. Haunert, Prof. Höfle).

Important dates for submission can be found here: http://www.pf.bgu.tum.de/pfgk18/pfgk18_dat.html

Deadline for regular papers is 31 October 2017!

In a recently published study (1), we produced a web based land use land cover (LULC) product based on OSM tags which are constantly updated by contributors/volunteers, and present a Remote Sensing based solution when tags were absent for a test site. We harness the combined benefit of an open source and ever-growing machine generated remote sensing time series, and thousands of people contributing land data every day. RS data were used as a source of information to extrapolate LC information provided by OSM tags into areas absent of such tags, where known areas were used as training to classify unknown areas. Three research questions were addressed:

  • What tags and relations in OSM can be used to create LULC classes from the CLC?
  • Can an open source LC product have complete coverage despite VGI’s spatial incompleteness?
  • How accurate is this LC product, and how does it compare to other existing products?

OpenStreetMap (OSM) tags were used to produce a global Open Land Cover (OLC) product with fractional data gaps available at osmlanduse.org. Data gaps in the global OLC map were filled for a case study in Heidelberg, Germany using free remote sensing data, which resulted in a land cover (LC) prototype with complete coverage in this area. Sixty tags in the OSM were used to allocate a Corine Land Cover (CLC) level 2 land use classification to 91.8% of the study area, and the remaining gaps were filled with remote sensing data. For this case study, complete are coverage OLC overall accuracy was estimated 87%, which performed better than the CLC product (81% overall accuracy) of 2012. Spatial thematic overlap for the two products was 84%. OLC was in large parts found to be more detailed than CLC, particularly when LC patterns were heterogeneous, and outperformed CLC in the classification of 12 of the 14 classes. Our OLC product represented data created in different periods; 53% of the area was 2011–2016, and 46% of the area was representative of 2016–2017.

http://osmlanduse.org

EU H2020 Project LandSense

New: (1)

Schultz, M.; Auer, A.; Voss, J. Carter,S.; Zipf, A. (2017): Open land cover from OpenStreetMap and remote sensing. International Journal of Applied Earth Observation and Geoinformation. Volume 63, December 2017, Pages 206-213. https://doi.org/10.1016/j.jag.2017.07.014

Related earlier work:

Jokar Arsanjani, J., Mooney, P., Zipf, A., Schauss, A., (2015): Quality assessment of the contributed land use information from OpenStreetMap versus authoritative datasets. In: Jokar Arsanjani, J., Zipf, A., Mooney, P., Helbich, M., OpenStreetMap in GIScience: experiences, research, applications. ISBN:978-3-319-14279-1, PP. 37-58, Springer Press.

Jokar Arsanjani, J., Helbich, M., Bakillah, M., Hagenauer, J., & Zipf, A. (2013). Toward mapping land-use patterns from volunteered geographic information. International Journal of Geographical Information Science, 2264-2278. DOI:10.1080/13658816.2013.800871.

Dorn, H., Törnros, T. & Zipf, A. (2015): Quality Evaluation of VGI using Authoritative Data – A Comparison with Land Use Data in Southern Germany. ISPRS International Journal of Geo-Information. Vol 4(3), pp. 1657-1671, doi: 10.3390/ijgi4031657

Ballatore, A. and Zipf, A. (2015): A Conceptual Quality Framework for Volunteered Geographic Information. COSIT - CONFERENCE ON SPATIAL INFORMATION THEORY XII. October 12-16, 2015. Santa Fe, New Mexico, USA. Lecture Notes in Computer Science, pp. 1-20.

Törnros, T., Dorn, H., Hahmann, S., and Zipf, A. (2015): Uncertainties of completeness measures in OpenStreetMap - A Case Study for buildings in a medium-sized German city, ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., II-3/W5, 353-357, doi:10.5194/isprsannals-II-3-W5-353-2015.

Fan H., Zipf A., Fu Q. and Neis P. 2014. Quality assessment for building footprints data on OpenStreetMap. In: International Journal of Geographical Information Science. DOI: 10.1080/13658816.2013.867495

Last week (Sept. 18-22, 2017), our six colleagues, Prof. Alexander Zipf, Doctoral Candidate Xuke Hu, Dr. Hongchao Fan, Dr. Martin Hämmerle, Dr. Zhiyong Wang, and Dr. Wei Huang, participated in the ISPRS Geospatial Week 2017 held in Wuhan, China.

Xuke, Martin, Hongchao, Wei and Zhiyong)

GIScience group members at the ISPRS Geospatial Week 2017 (from left to right: Xuke, Martin, Hongchao, Wei and Zhiyong)

In the opening ceremony on Sept. 18, 2017, the U.V. Helava Award was presented to Dr. Huang for his paper, “Understanding Human Activity Patterns based on Space-Time-Semantics”, which was selected as the best paper published in the ISPRS Journal of Photogrammetry and Remote Sensing in 2016.

Dr. Huang (left) on the stage

Dr. Huang (left) on the stage

In the morning of Sept. 19, 2017, Prof. Zipf did a keynote speech, entitled “Analyzed Volunteered Information (VGI) with Big Data Technologies. Later on, he obtained a special “book”—a collection of all he coauthored papers published in MDPI journals—from MDPI publisher as a gift.

Later he participated also in the Editorial Board meeting of the International Open Access Journal “Geo-Spatial Information Science” published by Taylor and Francis. For this we also have a recent call for papers for a special issue on “Urban Geoinformatics“. The publications are free of charge for authors. The first deadline is planned for end of October 2017. Hurry!

Prof. Zipf does keynote speech

Prof. Zipf does keynote speech

Prof. Zipf (middle) and Dr. Fan (left) at MDPI booth. Prof. Zipf obtains paper collection from MDPI.

Prof. Zipf (middle) and Dr. Fan (left) at MDPI booth. Prof. Zipf obtains

There were further contributions of Heidelberg GISicence: Xuke presented his paper—“A Conceptual Framework for Indoor Mapping by using Grammars” on Sept. 19. In the same session, Dr. Wang also presented his work, “Using OpenStreetMap Data to Generate Building Models wither Their Inner Structures for 3D Maps”. Within the frame of the laser scanning workshop, Dr. Martin Hämmerle (3D Spatial Data Processing Group) introduced the study “Simulating various terrestrial and UAV LiDAR scanning configurations for understory forest structure modelling”.

Xuke presents his work
Xuke presents his work
Dr. Hämmerle presents his work

Dr. Hämmerle presents his work

Dr. Wang presents his work

Dr. Wang presents his work

The Travel Awards were announced in the closing ceremony, Xuke is one of the winners.

Xuke (the second from right) on the stage

Xuke (the second from right) on the stage

Check out the mentioned papers:

Hu, Xuke; Fan, Hongchao; Zipf, Alexander; Shang, Jianga; Gu, Fuqiang (2017): A conceptual framework for indoor mapping by using grammars. ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume IV-2/W4, pp. 335-342. DOI: https://doi.org/10.5194/isprs-annals-IV-2-W4-335-2017

Wang, Zhiyong; Zipf, Alexander (2017): Using OpenStreetMap data to generate building models with their inner structures for 3D maps. ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume IV-2/W4, pp. 411-416. DOI: https://doi.org/10.5194/isprs-annals-IV-2-W4-411-2017

Hämmerle, Martin; Lukač, Niko; Chen, Kuei-Chia; Koma, Zsófia; Wang, Chi-Kuei; Anders, Katharina; Höfle, Bernhard (2017): Simulating various terrestrial and UAV LiDAR scanning configurations for understory forest structure modelling. ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume IV-2/W4, pp. 59-65. DOI: https://doi.org/10.5194/isprs-annals-IV-2-W4-59-2017

(Text provided by Dr. Wei Huang)

Stelle zu besetzen:

Business & Innovation Development – Navigation Intelligence
Heidelberg Institute for Geoinformation Technology (HeiGIT)

Zur Förderung von Technologietransfer und angewandter Forschung im Bereich Geoinformatik wird derzeit mit Grundförderung der Klaus-Tschira Stiftung das Heidelberg Institute for Geoinformation Technology (HeiGIT) aufgebaut. http://heigit.org Dies soll zukünftig als An-Institut weitergeführt werden. Hierfür ist die Stelle für Business & Innovation Development - Navigation Intelligence and Location Based Services (Smart Mobility) zu besetzen (100%). Das spannende Aufgabenportfolio beinhaltet z.B.:

· Strategische Konzeption neuer R&D-Aktivitäten, Dienste, Anwendungen und Produkte auf Basis OpenStreetMap und weiteren Daten insb. in den Bereichen Smart Mobility & Navigation Intelligence, Location Services, Smart City & Big Spatial Data etc. Zentral ist dabei die Open Source Pattform http://OpenRouteService.org

· Kunden-, Auftrags- und Projektakquise, sowie –management; Drittmittelakquise im nationalen und internationalen Umfeld

· Kommunikation und Präsentation intern und mit externen Partnern und Nutzern

· Koordinierende Schnittstelle zwischen Forschungs- und Entwicklungsaktivitäten der Abteilung GIScience und dem Heidelberg Institute for Geoinformation Technology (HeiGIT) und externen Partnern

· Wissensmanagement und Koordination von Forschungs- und Entwicklungsarbeiten

Wir bieten eine spannende Aufgabe in einem interdisziplinären, dynamischen Team in einem hochaktuellen Wachstumsmarkt. HeiGIT ist mit der Abteilung Geoinformatik der Universität Heidelberg assoziiert und damit u.a. Mitglied im Interdisziplinären Zentrum für Wissenschaftliches Rechnen (IWR). Die Exzellenz-Universität Heidelberg bietet ein anregendes Umfeld mit vielen persönlichen Entwicklungsmöglichkeiten an einem attraktiven Standort mit hoher Lebensqualität.

Wir erwarten Erfahrung im Bereich Business Development bzw. Innovation Management. Hinzu kommt ein überdurchschnittlich abgeschlossenes Universitätsstudium in einem der Fächer Geoinformatik, Informatik, Geographie o.ä., idealerweise mit Promotion. Erforderlich sind neben ausgeprägtem Teamgeist, Selbständigkeit und hoher Motivation, v.a. ausgezeichnete Methoden- und Technikkompetenz und Erfahrung im Bereich Geoinformatik, insbesondere im Bereich Navigation Intelligence, Smart Mobility. Erfahrung bei Projektakquise und –management, Marketing und Vertrieb, Koordination und Administration, sowie ausgezeichnete Fähigkeiten zu interner und externer Kommunikation und Präsentation auf Deutsch und Englisch.

Die Stelle ist baldmöglichst zu besetzen und aus administrativen Gründen zunächst bis 30.06.2019 befristet mit der Option auf nachhaltige Verlängerung. Bewerbungsunterlagen (CV, Zeugnisse, Referenzen, etc.) senden Sie baldmöglichst, mögl. bis Mitte Oktober an zipf@uni-heidelberg.de. Schwerbehinderte werden bei gleicher Eignung vorrangig eingestellt.

Tuesday night central Mexico was struck by an earthquake with the magnitude of appr. 7.1, causing the collapse of several buildings in Mexico City and serious harm for the local population.

This event is the latest of a number of disasters in the recent weeks, including hurricanes and floods. Just twelve days before, the southern mexican state Chiapas got hit by an earthquake, too.
The Humanitarian OpenStreetMap Team activated for all these disasters with great support of the worldwide mapping community that provided crucial base map material for the affected regions.
Disastermappers heidelberg/GIScience support these efforts with a special mapathon for Mexico City tomorrow afternoon.

When? Friday, 22/9/2017, 2- 5pm

Where? INF348, R014A

We welcome everyone to join, no previous experience needed. Please just make sure to bring a laptop and mouse.

We are looking forward to seeing you!

If you want to support the work remotely, please look for the priority tasks in the Tasking Manager!

Canada- picturesque mountains, craggy-coasts, vast untouched landscapes, diverse cultures- and a country that is increasingly supporting the use of open data. In this vein, last week the capital of Canada became a place for exchange, knowledge sharing and awareness building all around the use of open data to support humanitarian and disaster related purposes.

The week started with the annual gathering of the Missing Maps members, hosted by the newest member, the Canadian Red Cross, that just joined the members of the project as well as the International Federation of Red Cross and Red Crescent Societies and are a valuable enrichment to our group. The event provided the direct chance to meet a great part of the members in person and to exchange ideas all around Missing Maps, current and previous as well as planned projects, and the future and visions for Missing Maps.

The HOT Summit then followed as next highlight, the annual gathering of the Humanitarian OpenStreetMap Team (HOT) community, partners, supporters and organisations and all interested in OSM and the use of OSM data for humanitarian and disaster purposes. This year`s summit theme was “OpenStreetMap: Impact in Disaster and Development”, therefore a large focus of the presentations was on showing how mapping projects can have impact on the lives beyond the people mapping. The event provided the chance to learn about the various projects of HOT, the current and planned partnerships and challenges. Furthermore the Summit provided the possibility to meet the members of the international HOT community. Marcel Reinmuth of the GIScience Research Group/disastermappers heidelberg, gave an overview about the current work around MapSwipe. He presented results on data quality and new developments on the app backend and MapSwipe Analytics.

Melanie Eckle (HeiGIT/GIScience Research Group/disastermappers heidelberg) presented the preliminary results of the current collaborative project around Crowdsourcing post-earthquake building damage assessment with Stanford Urban Resilience Initiative, University of Colorado (Boulder), HOT, GFDRR on behalf of the Stanford team.

Videos of the presentations will be available online in a couple of weeks.

Melanie, Secretary of the HOT Board of Directors, furthermore took part in the in-person board meeting that was organized the weekend following the HOT Summit. The meeting provided the chance to discuss current projects, challenges and ideas all around the organization and community as well as the vision for HOTs future.

Thank you for great discussions, talks, insights and valuable impulses. We are very proud to be part of this great community and looking forward to hopefully meeting soon again to take these discussions further!
HeiGIT is generously supported through core funding from the Klaus Tschira Foundation Heidelberg.

Last week, our colleagues Franz-Benjamin Mocnik and René Westerholt participated in a summer school of the DFG priority programme on “VGI”. GIScience Heidelberg is involved in that programme by two projects, one of which is dealing with data quality issues and another one that investigates the assessment of spatial assotiations in social media data. The summer school included lectures and hands-on sessions. Franz-Benjamin Mocnik contributed a talk about OSMvis, a platform offering innovative visualization tools for OpenStreetMap data (cmp. 1). In addition, a collaboration with the Institute of Cartography of TU Dresden on the investigation of food habits by using different social media platforms was negotiated by René Westerholt.

(1) Mocnik, F.-B., Zipf, A., Raifer, M. (2017): The OpenStreetMap folksonomy and its evolution. Geo-spatial Information Science. DOI: 10.1080/10095020.2017.1368193.

« Newer Posts - Older Posts »