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About NGDA Imagery Theme
Georeferenced images of the Earth’s surface, which have been collected via aerial photography or satellite data. Orthoimagery is prepared through a geometric correction process known as orthorectification to remove image displacements due to relief and sensor characteristics, allowing their use as base maps for digital mapping and analyses in a GIS. Specific imagery data sets created through image interpretation and classification, such as a land cover image, can be found under themes specific to the subject matter. Includes imagery such as Landsat, National Agriculture Imagery Program (NAIP), Digital Orthophoto Quarter Quadrangles (DOQQs).
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Community Details
Sponsor: FGDC (email)
Theme Lead Agency: U.S. Department of Agriculture, Farm Production and Conservation (FPAC), U.S. Department of the Interior, U.S. Geological Survey
Theme Lead: John Mootz, FPAC and Gregory Snyder, USGS