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Many GIS projects require georeferencing of  maps or aerial photos. Georeferencing is the process of assigning real-world coordinates to an image so that when the image is loaded into GIS software, it is placed in its proper spatial location. Depending on the source materials and the specifications of the project, maps and imagery can be registered to either a coordinate system or to another base map such as a digital othophoto.

Creative Map Solutions offers the service of georeferencing maps and aerial photos to real-world coordinates.  For aerial imagery, georeferencing can produce fairly accurate placement results if the terrain is relatively flat.  For areas that contain relief, then orthorectification is necessary for aerial imagery in order to obtain more accurate results.

Orthorectification

Orthorectification is the process of adjusting an aerial photo to account for topographic relief, lens distortion, and camera tilt.  Creative Map Solutions offers orthorectification services for current and historic aerial imagery.  We use a combination of identifiable Ground Control Points (such as existing orthophotos or surveyed locations) along with high quality DEM data to produce accurate placement of aerial imagery in GIS and mapping applications.

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