Definition: Control point

UN - Geographic Information Systems

A point on a map, an aerial photo or in a digital database for which the x,y coordinates and possibly elevation are known. Used to geographically register map features.
Source:
United Nations, "Handbook on Geospatial Infrastructure in Support of Census Activities", Department of Economic and Social Affairs, Statistics Division, Studies in Methods, Series F No. 103, New York, 2009
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