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A high resolution urban and rural settlement map of Africa using deep learning and satellite imagery
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A high resolution urban and rural settlement map of Africa using deep learning and satellite imagery
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A high resolution urban and rural settlement map of Africa using deep learning and satellite imagery
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Journal Article
A high resolution urban and rural settlement map of Africa using deep learning and satellite imagery
2026
Overview
Accurate and consistent mapping of urban and rural areas is crucial for sustainable development, spatial planning, and policy design. It is particularly important in simulating the complex interactions between human activities and natural resources. Existing global urban-rural datasets such as such as GHSL-SMOD, GHS Degree of Urbanisation, and GRUMP are often spatially coarse, methodologically inconsistent, and poorly adapted to heterogeneous regions such as Africa, which limits their usefulness for policy and research. Their coarse grids and rule-based classification methods obscure small or informal settlements, and produce inconsistencies between countries. In this study, we develop a DeepLabV3-based deep learning framework that integrates multi-source data, including Landsat-8 imagery, VIIRS nighttime lights, ESRI Land Use Land Cover (LULC), and GHS-SMOD, to produce a 10 m resolution urban-rural map across the African continent from 2016 to 2022. The use of Landsat data also highlights the potential to extend this mapping approach historically, reaching back to the 1990s. The model employs semantic segmentation to capture fine-scale settlement morphology, and its outputs are validated using the Demographic and Health Surveys (DHS) dataset, which provides independent, survey-based urban-rural labels. The model achieves an overall accuracy of 65% and a Kappa coefficient of 0.47 at the continental scale, outperforming existing global products such as SMOD. The resulting High-Resolution Urban-Rural (HUR) dataset provides an open and reproducible framework for mapping human settlements, supporting UN Sustainable Development Goal (SDG) 11—Sustainable Cities and Communities—and enabling more context-aware analyses of Africa’s rapidly evolving settlement systems, which indirectly support other SDGs, such as SDG 1 (No Poverty), by distinguishing human settlement types. We release a continent-wide urban-rural dataset covering the period from 2016 to 2022, offering a new source for high-resolution settlement mapping in Africa.oxy_aqreply_end
