Tag: Quality

  • Quality Evaluation of OSM with Authoritative Data — a study of Land Use in Southern Germany

    Volunteered Geographic Information (VGI) such as data derived from the OpenStreetMap (OSM) project is a popular data source for freely available geographic data. There is frequently a cause of concern regarding the quality and usability of such data. In addition to our former studies (further here) or complementing our OSM in GIScience Book in a…

  • A Conceptual Quality Framework for Volunteered Geographic Information (VGI)

    The assessment of the quality of volunteered geographic information (VGI) is cornerstone to understand the fitness for purpose of VGI in many application domains. Most analyses focus on the geometric and positional quality, and only sporadic attention has been devoted to the interpretation of the data, i.e., the communication process through which consumers try to…

  • RICH-VGI workshop at 18th AGILE conference, Lisbon

    Our AGILE workshop called RICH-VGI (enRICHment of volunteered geographic information (VGI): Techniques, practices and current state of knowledge) was held on June 9, 2015 in Lisbon as part of the 18th AGILE Conference on Geographic Information Science of the Association of Geographic Information Laboratories in Europe (AGILE) with comparatively a large number of participants. The…

  • The importance of sidewalk information in OpenStreetMap for routing and navigation of people with restricted mobility

    Since the launch of OpenStreetMap (OSM) project in 2004, due to its nature and objective in collecting data from volunteers which are not necessarily familiar with GIScience and data collection procedures, the quality of gathered information has always been a main concern for both research and industrial communities. Several research studies have been conducted to…

  • Deadline Extended: VGI Quality Session at ISSDQ 2015

    Dear colleagues, We are happy to inform you that the deadline for paper submission for almost all events at the ISPRS Geospatial Week 2015 is extended to 15 April 2015 in order to faclicitate a consistent logistics and because of several demands to extend the deadline. This applies also to our session on “Quality analysis…

  • GIScience group participated in Open Data Day Mannheim

    Last Saturday (21/2) the GIScience group Heidelberg was part of the International Open Data Day. Open data enthusiasts all over the world teamed up to create new applications derived from open (not only governmental) data. The local open data day in Mannheim has seen 7 finished projects including Wikipedia edit wars analyses, public transport visualisations,…

  • Two open thesis topics related to accessibility of mobility-restricted people

    As announced earlier in our blog, there are open thesis topics within the European project: CAP4Access. Heidelberg University’s GIScience Research Group is a project partner of CAP4ACCESS. Other project partners include UCL, Fraunhofer and sozialhelden.de with their wheelmap.org project. The goal of CAP4Access project is to improve the accessibility of mobility-restricted people, in particular those who are wheelchair users. As…

  • Vandalism in Volunteered Geographic Information revisited

    In this weeks BrownBag talk at the UCSB Spatial Center Dr. Andrea Ballatore gave a nice overview about vandalism in user generated geographic information. The talk referred to his recent paper on “Defacing the Map: Cartographic Vandalism in the Digital Commons“. There he outlines a typology of different kinds of map-based vandalism through a qualitative…

  • Measuring the Reliability of Wheelchair User Route Planning based on Volunteered Geographic Information (OpenStreetMap)

    The development of a wheelchair user friendly route planning application inherits a number of special requirements and details that need to be considered during the generation of the routing graph and the corresponding algorithm, making this task much more complex than car or pedestrian related applications. Each wheelchair type and, more importantly, each individual user…

  • Special Issue “Remote Sensing and GIS for Habitat Quality Monitoring”

    Website: http://www.mdpi.com/journal/remotesensing/special_issues/rs-habitatmonitoring This Special Issue, “Remote Sensing and GIS for Habitat Quality Monitoring”, aims to pave the way for operational habitat quality monitoring from earth observation data for more effective habitat conservation. The demand for protecting biodiversity has been underlined by a number of recent international agreements, while the increasing size of protected habitats calls…