Johannes Mast

Johannes Mast

he/him

Doctoral Researcher at DLR

Posts by Collection

portfolio

flowmapper

Flowmapper is an R package that allows users to create beautiful, informative maps of geographic flows.

ImageFusion

This R package can run several widely used temporal fusion algorithms in C++, allowing users to benefit from both the performance of C++ and the analytical capabilities of R.

MigrationDetectR

MigrationDetectR implements a segment-based method for the detection of migration events in digital trace data.

rtsVis

A tool for the animation of raster time series, aimed at Remote Sensing time series. It provides several customizable animation and plot types to support customizable scientific visualisations.

publications

Enhancing Earth Observation of Migration with Insights from Social Media

Published in ESA Living Planet Symposium 2022, 2022

ESA Living Planet Symposium 2022, Bonn, Germany.

Recommended citation: Mast, J., Sapena, M., Okhimamhe, L. A. A., Fürst, C., Biewer, C. & Taubenböck, H. (2022). "Enhancing Earth Observation of Migration with Insights from Social Media." ESA Living Planet Symposium 2022, Bonn, Germany.

Are citizens’ perceptions on urban green spaces influenced by their immediate environment? The case of Grand Nokoue, Benin Republic

Published in 2023 Joint Urban Remote Sensing Event, 2023

2023 Joint Urban Remote Sensing Event. Heraklion, Greece.

Recommended citation: Tohoun, B. A., Sapena Moll, M., Mast, J., Taubenböck, H., Haruna, I., Orekan, V., & Okhimamhe, A. A. (2023). "Are citizens' perceptions on urban green spaces influenced by their immediate environment? The case of Grand Nokoue, Benin Republic." 2023 Joint Urban Remote Sensing Event. Heraklion, Greece.

Linking remote sensing data and online engagement in flood events in Nigeria

Published in 2023 Joint Urban Remote Sensing Event, 2023

2023 Joint Urban Remote Sensing Event. Heraklion, Greece.

Recommended citation: Mast, J., Sapena, M., Geiß, C., & Taubenböck, H. (2023). "Linking remote sensing data and online engagement in flood events in Nigeria." 2023 Joint Urban Remote Sensing Event. Heraklion, Greece.

Integrating multi-source remote sensing data for monitoring urban development in West Africa

Published in 2023 Joint Urban Remote Sensing Event, 2023

2023 Joint Urban Remote Sensing Event. Heraklion, Greece.

Recommended citation: Sapena Moll, M., Inkoom, J. N., Umaru, E. T., Mast, J., Okhimamhe, A. A., & Taubenböck, H. (2023). "Integrating multi-source remote sensing data for monitoring urban development in West Africa." 2023 Joint Urban Remote Sensing Event. Heraklion, Greece.

The Spatiality of Topics In Typical Sources of Text Data

Published in 16th ACM Web Science Conference 2024, 2024

16th ACM Web Science Conference 2024, Stuttgart, Germany.

Recommended citation: Mast, J. (2024). "The Spatiality of Topics In Typical Sources of Text Data." 16th ACM Web Science Conference 2024, Stuttgart, Germany.

Geolingual Studies: Combining linguistics, remote sensing, and digital humanities to assess the interrelation of physical and social spaces

Published in Spatial Humanities Conference 2024, 2024

Spatial Humanities Conference 2024, Bamberg, Germany.

Recommended citation: Mast, J. & Lemoine-Rodriguez, R. (2024). "Geolingual Studies: Combining linguistics, remote sensing, and digital humanities to assess the interrelation of physical and social spaces." Spatial Humanities Conference 2024, Bamberg, Germany.

Mobility analysis using big data approaches

Published in Migraware validation workshop, 2024

Migraware validation workshop, Abuja, Nigeria.

Recommended citation: Sapena, M., Mast, J. & Taubenböck, H. (2024). "Mobility analysis using big data approaches." Migraware validation workshop, Abuja, Nigeria.

Comparing Geospatiality of Topics between Geotag- and Geoparsing-based Geolocations

Published in 3rd International Workshop on Geographic Information Extraction from Texts Workshop, GeoExT 2025, at the European Conference for Information Retrieval (ECIR) 2025, 2025

3rd International Workshop on Geographic Information Extraction from Texts Workshop, GeoExT 2025, at the European Conference for Information Retrieval (ECIR) 2025.

Recommended citation: Mast, J., Lemoine-Rodriguez, R., Rittlinger, V., Geiß, C., & Taubenböck, H. (2025). "Comparing Geospatiality of Topics between Geotag- and Geoparsing-based Geolocations." 3rd International Workshop on Geographic Information Extraction from Texts Workshop, GeoExT 2025, at the European Conference for Information Retrieval (ECIR) 2025.

Spatial delineations of cities based on web content and built-up age—A case study on North African growth poles from 2010 to 2020

Published in 17th International Conference on Joint Urban Remote Sensing (JURSE 2025), 2025

Recommended citation: Mast, J., Geiß, C., & Taubenböck, H. (2025). "Spatial delineations of cities based on web content and built-up age—A case study on North African growth poles from 2010 to 2020." 17th International Conference on Joint Urban Remote Sensing (JURSE 2025), Tunis, Tunisia.
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Geospatiality of Topics in English Text Data

Published in International Conference for Computational Social Science (IC2S2), 2025

International Conference for Computational Social Science (IC2S2), Norrköping, Sweden.

Recommended citation: Mast, J., Geiß, C., & Taubenböck, H. (2025). "Geospatiality of Topics in English Text Data." International Conference for Computational Social Science (IC2S2), Norrköping, Sweden.

Assessing the potential of social media data to support remote sensing data in migration analysis – An explorative modelling approach for Ghana, 2015-2020

Published in ESA Living Planet Symposium 2025, 2026

ESA Living Planet Symposium 2025, Vienna, Austria.

Recommended citation: Mast, J., Sapena Moll, M., Geiß, C., & Taubenböck, H. (2025). "Assessing the potential of social media data to support remote sensing data in migration analysis – An explorative modelling approach for Ghana, 2015-2020." ESA Living Planet Symposium 2025, Vienna, Austria.

talks

Geodaten, Mobilität, und soziale Medien – Big Data und die Perspektive der Stadtbevölkerung

Published:

A. Droin and I had the special privilege of being invited by the student’s board of the Geographic Institute to hold a talk at the lecture series of the Geografische Gesellschaft Würzburg. In our talk and the following discussion, we tackled the question of how the perspectives and needs of individuals can be accounted for in urban analysis. We discussed aspects of accessibility, spatial cognition, urban functions and the use of social media, among others. You can read more on the EORC Blog post.

The joint use of remote sensing data and text data for migration research – Exploring potentials and limitations for the case of West Africa

Published:

In April, I had the opportunity to present in the Seminar of the Max Planck Institute for Demographic Research, a leading demographic research center in Rostock. I am very grateful to the MPIDR for inviting and hosting me at their institute and the many inspiring discussions regarding synergies between Earth Observation and Demographic research. For more information, see the post on the MPIDR website.

Joining Remote Sensing and Social Media Data for Migration Research – Perspectives on Cities and Mobilities

Published:

Together with R. Rodriguez from the Geolingual Studies team, I had the opportunity to present our research at the Max Planck Institute for Security and Privacy in Bochum, Germany. We presented research on combining remote sensing and social media data to study migration. My talk specifically highlighted our approach of combining remote sensing and social media data in research of human mobility and urban discourse across different urban environments in Africa. I am grateful to the MPISP for giving us the opportunity to visit their lab and discuss challenges and potentials for future research in this field.

teaching

Science from Wall to Wall

Guest Lecturer, University of Würzburg, 2022

Guest Lecturer in the course “Science from Wall to Wall”, part of the M.Sc. programme “applied Earth Observation and Geoanalysis of the Living Environment” at the University of Würzburg (2022 & 2023).

Migration: Remote Sensing and Other Data Sources for Analysis

Guest Lectures, Federal University of Technology (FUT) Minna, 2022

As part of our collaboration with the Federal University of Technology (FUT) Minna in the context of the WASCAL and MIGRAWARE projects, we had the privilege of conducting a series of online lectures, together with M. Weigand, M. Sapena, and H. Taubenböck. We demonstrated and discussed applications of remote sensing in the context of urbanisation, georisks, and human migration.

Mobility analysis using big data approaches

Guest Lectures, University of Cape Coast, 2023

M. Sapena, E. Schoepfer, H. Taubenböck and I held a series of online guest lectures in the seminar of the University of Cape Coast (UCC), Ghana, our partner organisation in the MIGRAWARE project who I had the privilege of visiting in 2023. After our talks, we had engaging discussions with the students from UCC about the capabilities of earth observation data and the potentials and challenges of social media analysis.

Analysing big open human mobility data and contrasting it with access to opportunities using R

Tutorial, International Conference for Computational Social Science (IC2S2), 2025

Together with E. Kotov, I held a workshop at the International Conference for Computational Social Science (IC2S2). We introduced data sources and tools for the acquisition, analysis and visualisation of big open mobility data. As a case study, we presented accesssibility analysis using open mobility data from Spain, acquired with spanishoddata and visualised with flowmapper.