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AI4EO: building footprints from space

Machine learning for building-footprint segmentation, bringing Earth-observation data to humanitarian planning.

Radar image of Kirkouk with predicted building-area boundaries outlined in green.
Andrey Malakhov & Alessandro Patruno / Team Zephyros. ESA Φ-lab Open full-size image ↗

Model output

Mapping the built environment.

Green contours show predicted building areas in radar imagery over Kirkouk, Iraq. These are Team Zephyros results published in ESA Φ-lab’s challenge report.

The challenge

Humanitarian planning needs reliable information about the built environment. The AI4EO challenge with UNOSAT addressed building-footprint mapping in Iraq, in support of reconstruction and census planning.

Our contribution

Alessandro Patruno and Andrey Malakhov participated as Team Zephyros in the AI4EO initiative. Their work explored machine-learning workflows for distinguishing buildings from their surroundings in satellite data.

Technical approach

Building-footprint segmentation using Sentinel-1 radar data in VV/VH polarisations and WorldView optical imagery. The task connects image processing, machine learning and geospatial analysis across large areas.

Why it matters

The work demonstrates how scientific computing can turn Earth-observation imagery into information relevant to humanitarian and environmental questions. ESA Φ-lab’s challenge report credits Team Zephyros for example predictions over Kirkouk and Baghdad.

A closer look at the results

Radar image of Baghdad with predicted building areas outlined in green.
A second prediction over Baghdad. Andrey Malakhov & Alessandro Patruno / Team Zephyros. ESA Φ-lab Open full-size figure ↗

Initiative

AI4EO Challenge with UNOSAT / ESA Φ-lab

Period

2020 initiative

People

Alessandro Patruno
Andrey Malakhov

Methods

Semantic segmentation
Sentinel-1 VV/VH
WorldView optical imagery
Geospatial analysis

Reference

ESA Φ-lab: AI4EO challenge ↗

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