Akpona Okujeni

17 papers C 1Journal 13Unranked 3
YearRankTypeTitle / Venue / Authors
2024 C conf
Mapping Savannah Woody Vegetation at the Species Level with Multispectral Drone and Hyperspectral EnMAP Data.
IGARSS
Christina Karakizi, Akpona Okujeni, Eleni Sofikiti, Vasileios Tsironis, Athina Psalta, Konstantinos Karantzalos, Patrick Hostert, Elias Symeonakis
2024 J jnl
Mapping savannah woody vegetation at the species level with multispecral drone and hyperspectral EnMAP data.
CoRR
Christina Karakizi, Akpona Okujeni, Eleni Sofikiti, Vasileios Tsironis, Athina Psalta, Konstantinos Karantzalos, Patrick Hostert, Elias Symeonakis
2023 J jnl
EnMAP-Box: Imaging spectroscopy in QGIS.
SoftwareX
Benjamin Jakimow, Andreas Janz, Fabian Thiel, Akpona Okujeni, Patrick Hostert, Sebastian van der Linden
2021 J jnl
Combining simulated hyperspectral EnMAP and Landsat time series for forest aboveground biomass mapping.
Int. J. Appl. Earth Obs. Geoinformation
Sam Cooper, Akpona Okujeni, Dirk Pflugmacher, Sebastian van der Linden, Patrick Hostert
2019 J jnl
Comparing map-based and library-based training approaches for urban land-cover fraction mapping from Sentinel-2 imagery.
Int. J. Appl. Earth Obs. Geoinformation
Frederik Priem, Akpona Okujeni, Sebastian van der Linden, Frank Canters
2017 J jnl
A Novel Spectral Library Pruning Technique for Spectral Unmixing of Urban Land Cover.
Remote. Sens.
Jeroen Degerickx, Akpona Okujeni, Marian-Daniel Iordache, Martin Hermy, Sebastian van der Linden, Ben Somers
2017 J jnl
Ensemble Learning From Synthetically Mixed Training Data for Quantifying Urban Land Cover With Support Vector Regression.
IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens.
Akpona Okujeni, Sebastian van der Linden, Stefan Suess, Patrick Hostert
2017 J jnl
Influence of neighbourhood information on 'Local Climate Zone' mapping in heterogeneous cities.
Int. J. Appl. Earth Obs. Geoinformation
Marie-Leen Verdonck, Akpona Okujeni, Sebastian van der Linden, Matthias Demuzere, Robert R. De Wulf, Frieke Van Coillie
2017 — conf
Optimizing mixed spectra generation for regression-based unmixing of land cover in urban areas.
JURSE
Frederik Priem, Frank Canters, Akpona Okujeni, Sebastian van der Linden
2017 J jnl
Subpixel Mapping of Urban Areas Using EnMAP Data and Multioutput Support Vector Regression.
IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens.
Johannes Rosentreter, Ron Hagensieker, Akpona Okujeni, Ribana Roscher, Paul D. Wagner, Björn Waske
2017 — conf
Thermal evaluation of the local climate zone scheme in Belgium.
JURSE
Marie-Leen Verdonck, Frieke Van Coillie, Robert R. De Wulf, Akpona Okujeni, Sebastian van der Linden, Matthias Demuzere, Hans Hooyberghs
2015 J jnl
Monitoring Natural Ecosystem and Ecological Gradients: Perspectives with EnMAP.
Remote. Sens.
Pedro J. Leitão, Marcel Schwieder, Stefan Suess, Akpona Okujeni, Lênio Soares Galvão, Sebastian van der Linden, Patrick Hostert
2015 J jnl
The EnMAP-Box - A Toolbox and Application Programming Interface for EnMAP Data Processing.
Remote. Sens.
Sebastian van der Linden, Andreas Rabe, Matthias Held, Benjamin Jakimow, Pedro J. Leitão, Akpona Okujeni, Marcel Schwieder, Stefan Suess, Patrick Hostert
2015 J jnl
Using Class Probabilities to Map Gradual Transitions in Shrub Vegetation from Simulated EnMAP Data.
Remote. Sens.
Stefan Suess, Sebastian van der Linden, Akpona Okujeni, Pedro J. Leitão, Marcel Schwieder, Patrick Hostert
2014 J jnl
A Comparison of Advanced Regression Algorithms for Quantifying Urban Land Cover.
Remote. Sens.
Akpona Okujeni, Sebastian van der Linden, Benjamin Jakimow, Andreas Rabe, Jochem Verrelst, Patrick Hostert
2014 J jnl
Import Vector Machines for Quantitative Analysis of Hyperspectral Data.
IEEE Geosci. Remote. Sens. Lett.
Stefan Suess, Sebastian van der Linden, Pedro J. Leitão, Akpona Okujeni, Björn Waske, Patrick Hostert
2014 — conf
On the use of collaborative sparse regression in hyperspectral unmixing chains.
WHISPERS
Marian-Daniel Iordache, Akpona Okujeni, Sebastian van der Linden, José M. Bioucas-Dias, Antonio Plaza, Ben Somers