A Crowdsourced Global Data Set for Validating Built-up Surface Layers

L. See, I. Georgieva, M. Duerauer, T. Kemper, C. Corbane, L. Maffenini, J. Gallego, M. Pesaresi, F. Sirbu, R. Ahmed, K. Blyshchyk, B. Magori, V. Blyshchyk, O. Melnyk, R. Zadorozhniuk, M.-T. Mandici, Y.-F. Su, A.H. Rabia, A. Pérez-Hoyos, R. Vasylyshyn, C.K. Pawe, S. Bilous, S.B. Kovalevskyi, S.S. Kovalevskyi, K. Bordoloi … & S. Fritz
This collection contains data that were collected during a crowdsourcing campaign using Geo-Wiki (https://www.geo-wiki.org/). The campaign involved visual interpretation of a sample that is designed for validating any existing global built-up surface product. A zipped shapefile (ValidationGrids.zip) contains the random stratified sample of 50K locations, which consist of 80x80m grids further sub-divided into 10m cells so there are 64 cells per grid. These locations were provided to the crowd, who used very high-resolution satellite images...
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