The map displayed above is an example of a Digital Orthophoto Quadrangles also known as DOQQ. A DOQQ is a digitalized image of an aerial photograph. This allows the photograph to be extremely spatially accurate and allows all of the features in the pictures to be in their true positions. This method reduces all image displacement that could be caused by something such as terrain relief. Shown above is a DOQQ of a portion of South Carolina.
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