OpenStreetMap building data quality: the Siedleckie county study

Joanna Nowak Da Costa
Military University of Technology
Faculty of Land Engineering and Geodesy
Poland

Elżbieta Bielecka
Military University of Technology
Faculty of Land Engineering and Geodesy
Poland

Beata Całka
Military University of Technology
Faculty of Land Engineering and Geodesy
Poland

Abstract

Researchers all over the world are interested in OpenStreetMap data and its quality including completeness and geometric accuracy. This article looks into the commonly observed heterogeneous characteristics of OpenStreetMap geospatial data and draws attention to the vague semantic and quality foundations of this important grass-roots initiative. The experiment is an assessment of the completeness and positional accuracy of OSM building data compared to the national data: the Database of Topographic Objects in Poland (BDOT10k). The analysis was performed for the county and city of Siedlce. This study complements previous research results in the quantitative analysis of OpenStreetMap data quality. The results confirm the variable quality of OSM data in terms of completeness and updating of building information found in their attribute’s, and the positional accuracy of building corners even for the Polish territory. Nevertheless, the analysis did find that the positional accuracy of the OpenStreetMap building data was very good in comparison to the BDOT10K database. The authors draw attention to the fact that Free and Open geospatial data, despite its imperfections, is widely adopted by users including public administrations.

Keywords:

data quality; OSM; VGI; completeness; positional accuracy

Full Text:

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