Geo-reCAPTCHA: Crowdsourcing large amounts of geographic information from earth observation data

International Journal of Applied Earth Observation and Geoinformation

Volumn 40, Issue , 2015, Pages 29-38

  Hillen, Florian ^a   Höfle, Bernhard ^b  

^a UNIVERSITY OF OSNABRÜCK   (Germany)

^b UNIVERSITY OF HEIDELBERG   (Germany)

Author keywords

Crowdsourcing; Geo reCAPTCHA; reCAPTCHA; User generated geographic information; Volunteered geographic information

Indexed keywords

DIGITIZATION; EMPIRICAL ANALYSIS; GIS;

EID: 84943609393     PISSN: 15698432     EISSN: 1872826X     Source Type: Journal    
DOI: 10.1016/j.jag.2015.03.012     Document Type: Article

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