Title: A Global Human Settlement Layer from optical high resolution imagery - Concept and first results
Authors: PESARESI MartinoBLAES XAVIEREHRLICH DanieleFERRI STEFANOHAAG FernandHALKIA StamatiaHEINZEL JOHANNESKAUFFMANN MAYEULKEMPER ThomasSOILLE PierreSYRRIS VASILEIOSZANCHETTA LUIGIGUEGUEN LionelOUZOUNIS GEORGIOSSCAVAZZON Marco
Publisher: Publications Office of the European Union
Publication Year: 2012
JRC N°: JRC77925
ISBN: 978-92-79-27989-8 (print)
978-92-79-27988-1 (pdf)
ISSN: 1018-5593 (print)
1831-9424 (online)
Other Identifiers: EUR 25662
OP LB-NA-25-662-EN-C (print); LB-NA-25-662-EN-N (online)
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC77925
DOI: 10.2788/74059
10.2788/73897
Type: EUR - Scientific and Technical Research Reports
Abstract: A general framework for processing of high and very-high resolution imagery for creating a Global Human Settlement Layer (GHSL) is presented together with a discussion on the results of the first operational test of the production workflow. The test involved the mapping of 24.3 millions of square kilometres of the Earth surface spread over four continents, corresponding to an estimated population of 1.3 billion of people in 2010. The resolution of the input image data ranges from 0.5 to 10 meters, collected by a heterogeneous set of platforms including satellite SPOT (2 and 5), CBERS-2B, RapidEye (2 and 4), WorldView (1 and 2), GeoEye-1, QuickBird-2, Ikonos-2, and airborne sensors. Several imaging modes were tested including panchromatic, multispectral and pan-sharpened images. A new fully automatic image information extraction, generalization and mosaic workflow is presented that is based on multiscale textural and morphological image features extraction. New image feature compression and optimization are introduced, together with new learning and classification techniques allowing for the processing of HR/VHR image data using low-resolution thematic layers as reference. A new systematic approach for quality control and validation allowing global spatial and thematic consistency checking is proposed and applied. The quality of the results are discussed by sensor, by band, by resolution, and eco-regions. Critical points, lessons learned and next steps are highlighted.
JRC Directorate:Space, Security and Migration

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