A characterization of Volunteered Geographic Information

This paper characterizes the Volunteered Geographic Information (VGI) phenomenon and explores comprehensively its relation with SDI. The SDI component view is used as common framework for describing the main characteristics of VGI and as framework for exploring VGI and SDI relation. Openstreetmap, Wikiloc, 360.org, Wikimapia and Eye on earth are evaluated to indentify general characteristics of VGI initiatives and discuss differences and similarities between VGI and SDI. Despite differences between VGI and SDI similarities can be identified. Characteristics of all SDI components have been identified in the VGI case studies.

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