Results 51 to 60 of about 1,603 (199)
Volunteered and crowdsourced geographic information: the OpenStreetMap project
Journal of Spatial Information Science, 2020 Advancements in technology over the last two decades have changed how spatial data are created and used. In particular, in the last decade, volunteered geographic information (VGI), i.e., the crowdsourcing of geographic information, has revolutionized ...
Michela Bertolotto +2 more
doaj +1 more source
KINECT-BASED REAL-TIME RGB-D IMAGE FUSION METHOD [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012 3D reconstruction of indoor environments based on vision has been developed vigorously. However, the algorithm's complexity and requirements of professional knowledge make it restricted in practical application.
W. Guo, T. Du, X. Zhu, T. Hu
doaj +1 more source
Mapping Our Cities for All: A participatory baseline of business accessibility in Canada
Canadian Geographies / Géographies canadiennes, Volume 70, Issue 1, Spring / printemps 2026.Abstract Canada has committed to eliminating accessibility barriers by 2040, yet municipalities lack clear, comparable evidence on where building access breaks down. To address this gap, we set out to produce and test a participatory, city‐scale method to measure building accessibility of businesses. We report results from Mapping Our Cities for All, a
Victoria Fast +3 more
wiley +1 more source
Automated geographic context analysis for volunteered information
, 2013 Several studies show the impacts of (geo)social media and Volunteered Geographic Information (VGI) during crisis events, and have found intrinsic value for rescue teams, relief workers and humanitarian assistance coordinators, as well as the affected ...
OSTERMANN Frank +4 more
core +1 more source
Assessing the Validity of OpenStreetMap for Food Environment Research
Geographical Analysis, Volume 57, Issue 4, Page 592-601, October 2025.ABSTRACT This study assessed agreement between food environment measures derived from OpenStreetMap (OSM) data, a commercial dataset, and an administrative dataset (the Canadian Food Environment Dataset, Can‐FED) to better understand the suitability of OSM food‐related data for food environment research.
Guangping Chen +3 more
wiley +1 more source
Volunteered Geographic Information, Introduction and Position Papers [PDF]
, 2007 This flier provides a brief description of a workshop hosted in Santa Barbara on volunteered geographic information (VGI). Discussions focused on citizen motivations to provide information in the public domain, methods to validate such information, and ...
National Center for Geographic Information and Analysis (NCGIA, UC Santa Barbara) +3 more
core
Characterizing Volunteered Geographic Information using Fuzzy Clustering [PDF]
, 2016 This paper demonstrates the use of fuzzy clustering to characterize Volunteered Geographic Information (VGI). We argue that classifying small areas based on variables related to the amount, type, and currency of VGI can provide a more nuanced ...
S. De Sabbata (7734296) +2 more
core +2 more sources
Geographical Analysis, Volume 57, Issue 4, Page 758-772, October 2025.ABSTRACT Scales, as survey instruments, are crucial for investigating people's attitudes and behaviors in social science research. Cronbach's alpha is the most frequently used measure of internal consistency reliability for multi‐item survey scales. Affected by the spatial context of respondents' locations, the reliability of responses to a scale may ...
Sui Zhang, Ziqi Li
wiley +1 more source
Data trustworthiness and user reputation as indicators of VGI quality
Geo-spatial Information Science, 2018 Volunteered geographic information (VGI) has entered a phase where there are both a substantial amount of crowdsourced information available and a big interest in using it by organizations.
Paolo Fogliaroni +2 more
doaj +1 more source
Jurnal Riset Informatika, 2021 Land in DKI Jakarta has problems in land use. Many land-use does not comply with planning. Illegal buildings are often found in areas designated for green open space and river boundaries. Land use monitoring requires the role of information technology. This research uses an open-source-based application to develop easier and cheaper.
Anang Wahyu Sejati, Bayu Purwanto
openaire +2 more sources