Tobias Ullmann

Publication Activity (10 Years)

Years Active: 2010-2024
Publications (10 Years): 20

Top Topics

Spatial Resolution

Satellite Images

Top Venues

IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens.

Publications

Lorenza Gilardi, Thilo Erbertseder, Frank Baier, Heiko Paeth, Tobias Ullmann, Hannes Taubenböck
The Influence of Commuting on Population Exposure to Air Pollution: Toward Global Application With a Proxy on the Degree of Urbanization. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 17 (2024)
Johannes Löw, Steven Hill, Insa Otte, Michael Thiel, Tobias Ullmann, Christopher Conrad
How Phenology Shapes Crop-Specific Sentinel-1 PolSAR Features and InSAR Coherence across Multiple Years and Orbits. Remote. Sens. 16 (15) (2024)
Marius B. Philipp, Andreas J. Dietz, Tobias Ullmann, Claudia Kuenzer
A Circum-Arctic Monitoring Framework for Quantifying Annual Erosion Rates of Permafrost Coasts. Remote. Sens. 15 (3) (2023)
Dan Kanmegne Tamga, Hooman Latifi, Tobias Ullmann, Roland Baumhauer, Jules Bayala, Michael Thiel
Estimation of Aboveground Biomass in Agroforestry Systems over Three Climatic Regions in West Africa Using Sentinel-1, Sentinel-2, ALOS, and GEDI Data. Sensors 23 (1) (2023)
Maninder Singh Dhillon, Thorsten Dahms, Carina Kuebert-Flock, Adomas Liepa, Thomas Rummler, Joel Arnault, Ingolf Steffan-Dewenter, Tobias Ullmann
Impact of STARFM on Crop Yield Predictions: Fusing MODIS with Landsat 5, 7, and 8 NDVIs in Bavaria Germany. Remote. Sens. 15 (6) (2023)
Maninder Singh Dhillon, Carina Kuebert-Flock, Thorsten Dahms, Thomas Rummler, Joel Arnault, Ingolf Steffan-Dewenter, Tobias Ullmann
Evaluation of MODIS, Landsat 8 and Sentinel-2 Data for Accurate Crop Yield Predictions: A Case Study Using STARFM NDVI in Bavaria, Germany. Remote. Sens. 15 (7) (2023)
Sebastian Buchelt, Jan Henrik Blöthe, Claudia Kuenzer, Andreas Schmitt, Tobias Ullmann, Marius B. Philipp, Christof Kneisel
Deciphering Small-Scale Seasonal Surface Dynamics of Rock Glaciers in the Central European Alps Using DInSAR Time Series. Remote. Sens. 15 (12) (2023)
Sophie Reinermann, Ursula Gessner, Sarah Asam, Tobias Ullmann, Anne Schucknecht, Claudia Kuenzer
Detection of Grassland Mowing Events for Germany by Combining Sentinel-1 and Sentinel-2 Time Series. Remote. Sens. 14 (7) (2022)
Maninder Singh Dhillon, Thorsten Dahms, Carina Kuebert-Flock, Ingolf Steffan-Dewenter, Jie Zhang, Tobias Ullmann
Spatiotemporal Fusion Modelling Using STARFM: Examples of Landsat 8 and Sentinel-2 NDVI in Bavaria. Remote. Sens. 14 (3) (2022)
Moritz Rösch, Ruth Sonnenschein, Sebastian Buchelt, Tobias Ullmann
Comparing PlanetScope and Sentinel-2 Imagery for Mapping Mountain Pines in the Sarntal Alps, Italy. Remote. Sens. 14 (13) (2022)
Marius B. Philipp, Andreas J. Dietz, Tobias Ullmann, Claudia Kuenzer
Automated Extraction of Annual Erosion Rates for Arctic Permafrost Coasts Using Sentinel-1, Deep Learning, and Change Vector Analysis. Remote. Sens. 14 (15) (2022)
Ronja Lappe, Tobias Ullmann, Felix Bachofer
State of the Vietnamese Coast - Assessing Three Decades (1986 to 2021) of Coastline Dynamics Using the Landsat Archive. Remote. Sens. 14 (10) (2022)
Johannes Löw, Tobias Ullmann, Christopher Conrad
The Impact of Phenological Developments on Interferometric and Polarimetric Crop Signatures Derived from Sentinel-1: Examples from the DEMMIN Study Site (Germany). Remote. Sens. 13 (15) (2021)
Tobias Ullmann, Georg Stauch
Surface Roughness Estimation in the Orog Nuur Basin (Southern Mongolia) Using Sentinel-1 SAR Time Series and Ground-Based Photogrammetry. Remote. Sens. 12 (19) (2020)
Maninder Singh Dhillon, Thorsten Dahms, Carina Kuebert-Flock, Erik Borg, Christopher Conrad, Tobias Ullmann
Modelling Crop Biomass from Synthetic Remote Sensing Time Series: Example for the DEMMIN Test Site, Germany. Remote. Sens. 12 (11) (2020)
Gerald Forkuor, Tobias Ullmann, Mario Griesbeck
Mapping and Monitoring Small-Scale Mining Activities in Ghana using Sentinel-1 Time Series (2015-2019). Remote. Sens. 12 (6) (2020)
Leon Nill, Tobias Ullmann, Christof Kneisel, Jennifer Sobiech-Wolf, Roland Baumhauer
Assessing Spatiotemporal Variations of Landsat Land Surface Temperature and Multispectral Indices in the Arctic Mackenzie Delta Region between 1985 and 2018. Remote. Sens. 11 (19) (2019)
Tobias Ullmann, Julia Sauerbrey, Dirk Hoffmeister, Simon Matthias May, Roland Baumhauer, Olaf Bubenzer
Assessing Spatiotemporal Variations of Sentinel-1 InSAR Coherence at Different Time Scales over the Atacama Desert (Chile) between 2015 and 2018. Remote. Sens. 11 (24) (2019)
Sarah N. Banks, Koreen Millard, Amir Behnamian, Lori White, Tobias Ullmann, François Charbonneau, Zhaohua Chen, Huili Wang, Jon Pasher, Jason Duffe
Contributions of Actual and Simulated Satellite SAR Data for Substrate Type Differentiation and Shoreline Mapping in the Canadian Arctic. Remote. Sens. 9 (12) (2017)
Tobias Ullmann, Andreas Schmitt, Thomas Jagdhuber
Two Component Decomposition of Dual Polarimetric HH/VV SAR Data: Case Study for the Tundra Environment of the Mackenzie Delta Region, Canada. Remote. Sens. 8 (12) (2016)
Claudia Kuenzer, Igor Klein, Tobias Ullmann, Efi Foufoula-Georgiou, Roland Baumhauer, Stefan W. Dech
Remote Sensing of River Delta Inundation: Exploiting the Potential of Coarse Spatial Resolution, Temporally-Dense MODIS Time Series. Remote. Sens. 7 (7) (2015)
Gerald Forkuor, Christopher Conrad, Michael Thiel, Tobias Ullmann, Evence Zoungrana
Integration of Optical and Synthetic Aperture Radar Imagery for Improving Crop Mapping in Northwestern Benin, West Africa. Remote. Sens. 6 (7) (2014)
Tobias Ullmann, Andreas Schmitt, Achim Roth, Jason Duffe, Stefan W. Dech, Hans-Wolfgang Hubberten, Roland Baumhauer
Land Cover Characterization and Classification of Arctic Tundra Environments by Means of Polarized Synthetic Aperture X- and C-Band Radar (PolSAR) and Landsat 8 Multispectral Imagery - Richards Island, Canada. Remote. Sens. 6 (9) (2014)
Tobias Ullmann, Parivash Lumsdon, Felicitas von Poncet, Thomas Esch, Oliver Lang, Marek Tinz, Steffen Kuntz, Stefan W. Dech
Application of quadpolarimetric TerraSAR-X data for landcover characterization in tropical regions - A case study in South Kalimantan, Indonesia. IGARSS (2012)
Sarah N. Banks, Tobias Ullmann, Jason Duffe, Achim Roth, Douglas J. King, Anne-Marie Demers, Anna Hogg, Andreas Schmitt, Roland Baumhauer, Stefan W. Dech
Multi-frequency analysis of high resolution quad-pol Radarsat-2 and dual-pol TerraSAR-X data for land cover classification in Arctic Coastal Ecosystems, Mackenzie Delta, beaufort sea. IGARSS (2012)
Thomas Esch, Andreas Schenk, Tobias Ullmann, Michael Thiel, Achim Roth, Stefan W. Dech
Characterization of Land Cover Types in TerraSAR-X Images by Combined Analysis of Speckle Statistics and Intensity Information. IEEE Trans. Geosci. Remote. Sens. 49 (6-1) (2011)
Thomas Esch, Andreas Schenk, Michael Thiel, Tobias Ullmann, Martin Schmidt, Stefan W. Dech
Land cover classification based on single-polarized VHR SAR images using texture information derived via speckle analysis. IGARSS (2010)