Selected analyzation of quality of OSM data in alpine space
ISBN 978-85-88783-11-9
Authors
1Krammer, R.; 2Gartner, G.; 3Schmidt, M.
1TU WIEN Email: r
2TU WIEN Email: georg.gartner@tuwien.ac.at
3TU WIEN Email: manuela.schmidt@tuwien.ac.at
Abstract
Austria is a hikers' paradise with endless mountain pastures and peaks, drawing hundreds of people to the mountains each year. There are numerous online portals that use web maps to illustrate hiking trails. The OpenStreetMap (OSM) project, which provides freely available spatial data, includes trails, alpine huts, etc. in its dataset. The purpose of this thesis was to collect parameters for determining the quality and accuracy of OSM data in alpine areas. In order to achieve this goal, OSM data from different test regions was compared to a set of corresponding reference data, namely the data of Freytag-Berndt und Artaria KG (F&B). Then, the completeness and positional accuracy (with a 25-meter buffer zone) of trails, waterways, alpine huts and mountain peaks was verified. The OSM data show a very good coverage of alpine trails and paths: a completeness of 95% in four out of five test regions could be observed. The average positional accuracy equals 85%. As far as the waterways are concerned, a completeness of 69% and a conformity of 55% could be observed. Alpine huts are fully covered (100%) in all five test regions and mountain peaks are covered at 80%.