Results 41 to 50 of about 20,583 (266)
Using VGI and Social Media Data to Understand Urban Green Space: A Narrative Literature Review
ISPRS Int. J. Geo Inf., 2021 Volunteered Geographical Information (VGI) and social media can provide information about real-time perceptions, attitudes and behaviours in urban green space (UGS). This paper reviews the use of VGI and social media data in research examining UGS.
N. Cui +3 more
semanticscholar +1 more source
Systems, 2023 The latest advances in spatial information technology have led to the emergence of Volunteered Geographic Information (VGI) as enrichment to existing spatial data sources.
Tarek Sboui, Saida Aissi
doaj +1 more source
Evaluating the usefulness of VGI from Waze for the reporting of flash floods
Scientific Reports, 2022 Using volunteered geographic information (VGI) to supplement disaster risk management systems, including forecasting, risk assessment, and disaster recovery, is increasingly popular.
Chris Lowrie +4 more
semanticscholar +1 more source
ISPRS International Journal of Geo-Information, 2020 Greece is one of the few European countries that has not yet a fully operating Cadastre at national coverage. Cadastral surveying and property registration have been completed only for about 8% of the Greek territory, which includes about 18% of the ...
George Mourafetis, Chryssy Potsiou
doaj +1 more source
Extracting Typhoon Disaster Information from VGI Based on Machine Learning
Journal of Marine Science and Engineering, 2019 The southeastern coast of China suffers many typhoon disasters every year, causing huge casualties and economic losses. In addition, collecting statistics on typhoon disaster situations is hard work for the government.
Yu Jiang +2 more
openalex +2 more sources
Geo-Spatial Information Science, 2022 The potential of citizens as a source of geographical information has been recognized for many years. Such activity has grown recently due to the proliferation of inexpensive location aware devices and an ability to share data over the internet. Recently,
G. Foody +3 more
semanticscholar +1 more source
Energies, 2021 Recently, the use of electric vehicles in a power grid has been attracting attention. The success of vehicle-grid integration (VGI) requires the active participation of not only VGI service providers but also electric vehicle owners, utility companies ...
Yongma Moon +4 more
doaj +1 more source
Segmentation based traversing-agent approach for road width extraction from satellite images using volunteered geographic information [PDF]
Applied Computing and Informatics, 2021 We make use of the Volunteered Geographic Information (VGI) data to extract the total extent of the roads using remote sensing images. VGI data is often provided only as vector data represented by lines and not as full extent.
Prajowal Manandhar +2 more
doaj +1 more source
A Systems Perspective on Volunteered Geographic Information
ISPRS International Journal of Geo-Information, 2014 Volunteered geographic information (VGI) is geographic information collected by way of crowdsourcing. However, the distinction between VGI as an information product and the processes that create VGI is blurred.
Victoria Fast, Claus Rinner
doaj +1 more source
VGI and Satellite Imagery Integration for Crisis Mapping of Flood Events
ISPRS Int. J. Geo Inf., 2022 Timely mapping of flooded areas is critical to several emergency management tasks including response and recovery activities. In fact, flood crisis maps embed key information for an effective response to the natural disaster by delineating its spatial ...
A. Vavassori +3 more
semanticscholar +1 more source