Tag Archives: Aerial Photographs And Satellite Images

To describe it now, georeferencing is a process of taking an image and assigning geographic coordinates to it or to georeference something means to define its existence in the physical space by establishing a relation between raster or vector images to map projections or coordinate systems. When data from different sources need to be compiled and used in any GIS application, it is important to have a general referencing system. This is brought about by using various georeferencing techniques.Procedure of georeferencingGeoreferencing usually refers to the method by which locations in raster and vector GIS files are related to real earth-surface positions.Raster data is often taken by scanning maps or collecting aerial photographs and satellite images. Scanned map datasets usually do not have any spatial reference information. The location information delivered with aerial photography and satellite imagery might be inadequate and the data need not align correctly with some other data Read more…