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With the increasing success and commercial integration of Volunteered Geographic Information (VGI), the focus shifts away from coverage to data quality and homogeneity. Within the last years, several studies have been published analyzing the positional accuracy of features, completeness of specific attributes, or the topological consistency of line and polygon features. However, most of these s...

High availability and diversity make Volunteered Geographic Information (VGI) an interesting source of information for an increasing number of use cases. Varying quality, however, is a concern often raised when it comes to using VGI in professional applications. Recent research directs towards the estimation of VGI quality through the notion of trust as a proxy measure. In this chapter, we inve...

Agrotourism is one of the main economic activities in municipality Venda Nova do Imigrante, located state Espírito Santo, Brazil. The objective this research was to analyse landscape changes generated by activity. methodology’s development through a stratified random selection, thematic quality maps from MAPBIOMAS platform assessed. A confusion matrix produced, and kappa coefficient calculated....

The Heat Energy Assessment Technologies (HEAT) project uses high-resolution airborne thermal imagery, Geographic Object-Based Image Analysis (GEOBIA), and a Geoweb environment to allow the residents of Calgary, Alberta, Canada to visualize the amount and location of waste heat leaving their houses, communities, and the city. To ensure the accuracy of these measures, the correct emissivity of ro...

With volunteered geographic information (VGI) platforms such as OpenStreetMap (OSM) becoming increasingly popular, we are faced with the challenge of assessing the quality of their content, in order to better understand its place relative to the authoritative content of more traditional sources. Until now, studies have focused primarily on developed countries, showing that VGI content can match...

Content created by internet users and enriched with geographical footprints is usually referred to as Volunteered Geographical Information (VGI; Goodchild 2007). This new source of information enables the collection of rich data sets that often outperform the data collected by private companies and government agencies in terms of the amount of data producers and their personal motivation to con...

Data obtained through Volunteered Geographical Information (VGI) have gradually been used to monitor and support planning mainly in urban contexts. Regarding recreational activities peri-urban green natural areas, VGI has map, measure use intensity, profile users, evaluate their preferences motivations. Given extensive use, it is now worthwhile assess the value of data (1) compare uses, users m...